-
cnScalarFieldData
-
Specifies the id of a ScalarField data
object. There is no default for this resource; it is the only resource
that must be set for the ContourPlot object to
draw a plot. You may create a ContourPlot object
without setting the cnScalarFieldData, and auxiliary
annotations such as tick marks and titles may appear as the result of a
draw, but the ContourPlot itself will not show up. The
ScalarField object can provide either regularly
spaced or irregular rectangular gridded data to the
ContourPlot object, and it provides a number of resources for
controlling the ingestion of the raw data.
Default: <None>
-
cnLevelSelectionMode
-
This enumerated resource of type NhlTLevelSelectionMode
provides four methods for selecting the contour intervals displayed in
a plot:
AutomaticLevels
- Ordinarily this mode determines contour levels by picking a
spacing value from a set of relatively "round" numbers scaled by
powers of 10 to the range of the data. This set of numbers is as
follows: 1.0, 2.0, 2.5, 4.0, 5.0. The number of levels chosen will be
as close as possible to the value of cnMaxLevelCount without
exceeding it. Once the spacing is chosen, the minimum contour level is
set to the value of the least multiple of the spacing greater than the
minimum data value. Likewise the maximum contour level becomes the
greatest multiple of the spacing less than the maximum data value.
Based on these values, ContourPlot sets the resources
cnLevelSpacingF, cnMinLevelValF, and
cnMaxLevelValF appropriately.
On the other hand, if you explicitly set the resource
cnLevelSpacingF to a valid value greater than 0.0 and less
than the range of the data, it will be used as the interval
spacing. The minimum and maximum levels are calculated as before. If
as a consequence, cnMaxLevelCount is less than the number of
levels so specified, it will be set to the number of levels actually
needed. However, if the choice of spacing causes the absolute maximum
number of levels, currently 255, to be exceeded,
ContourPlot will issue a warning message and recalculate
the spacing as previously described.
In any case, ContourPlot sets the
elements of the array resource cnLevels to the values of the
contour levels chosen and the read-only resource cnLevelCount
to the number of levels.
ManualLevels
ManualLevels mode bases the choice of contour levels on
the values of the resources cnLevelSpacingF,
cnMinLevelValF, and cnMaxLevelValF. Starting at
cnMinLevelValF, contour levels are created at intervals
spaced by the value of cnLevelSpacingF until
cnMaxLevelValF is reached. The final contour level will
always be cnMaxLevelValF. ContourPlot sets
elements of the array resource cnLevels to the values of each
contour level chosen and the read-only resource cnLevelCount
to the number of levels. If the current value of
cnMaxLevelCount is less than cnLevelCount, it is
reset to the value of cnLevelCount. However, if the level
count would exceed the absolute maximum number of levels, currently
255, ContourPlot issues a warning and chooses a new value
of cnLevelSpacingF based on the value of
cnMaxLevelCount.
If you choose ManualLevels selection mode when the
ContourPlot object is created, and if you do not set
cnMinLevelValF, ContourPlot will choose levels as
if you had set AutomaticLevels mode. If you set
cnMinLevelValF only, a default spacing is used, and the value
of cnMaxLevelValF is determined as it would be for
AutomaticLevels mode.
ExplicitLevels
- This mode allows you to specify the value of each contour level by
explicitly setting the contents of the cnLevels array. If
you choose
ExplicitLevels selection mode when creating a
ContourPlot object, but do not specify the
contents of the cnLevels array, ContourPlot will
choose levels as if you had specified AutomaticLevels mode.
Thereafter, when you set ExplicitLevels mode,
ContourPlot uses the current contents of
cnLevels, whether or not you set it explicitly.
If the number of elements in cnLevels exceeds the absolute
maximum number of levels (currently 255), ContourPlot
issues a warning and the mode defaults to AutomaticLevels.
Note that ContourPlot always sorts the elements of
cnLevels into a monotonically increasing sequence. After
sorting, cnMinLevelValF is set equal to the value of first
element of cnLevels, and cnMaxLevelValF is set to
the value of the last element. cnLevelSpacingF is
set to the average value of the spacing separating each level.
EqualSpacedLevels
- For this mode, ContourPlot divides the range spanning
the dataset minimum and maximum values into cnMaxLevelCount+1
equally spaced intervals. cnLevelSpacingF is set to the
value of this interval. cnMinLevelValF is set to the value of
the dataset minimum plus the value of
cnLevelSpacingF. cnMaxLevelSpacingF is set to the
value of the dataset maximum minus the value of
cnLevelSpacingF. This results in cnMaxLevelCount levels;
therefore ContourPlot sets the read-only
resource cnLevelCount equal to cnMaxLevelCount.
Default: AutomaticLevels
-
cnLevelCount
-
A read-only resource set to the actual number of levels chosen during
the level selection process.
Default: <dynamic>
-
cnMaxLevelCount
-
When the cnLevelSelectionMode is
AutomaticLevels and
cnLevelSpacingF is not explicitly set,
ContourPlot picks a number of levels less than or equal to
the current value of cnMaxLevelCount. If the
cnLevelSelectionMode is EqualSpacedLevels,
ContourPlot picks exactly cnMaxLevelCount
levels. If cnMaxLevelCount exceeds the absolute maximum level
count allowed by ContourPlot (currently 255), a warning
is issued and the value is reset to this maximum. If
cnLevelSelectionMode is ManualLevels or
ExplicitLevels or AutomaticLevels with
cnLevelSpacingF explicitly set, ContourPlot sets
cnMaxLevelCount to the number of levels actually used if
this number is greater than the current value of
cnMaxLevelCount.
Default: 16
-
cnLevelSpacingF
-
When the cnLevelSelectionMode is
ManualLevels or when the
cnLevelSelectionMode is AutomaticLevels, and
cnLevelSpacingF is explicitly set, cnLevelSpacingF
determines the spacing between contour intervals. Otherwise, the
ContourPlot object sets the value of cnLevelSpacingF
based on the contour levels actually chosen. When the
cnLevelSelectionMode is ExplicitLevels,
cnLevelSpacingF will be set to the arithmetic average of the
spacing between levels.
Default: 5.0
-
cnMinLevelValF
-
When the cnLevelSelectionMode is
ManualLevels, the
value of cnMinLevelValF, if set, determines the lowest
contour level. Otherwise, ContourPlot sets the
cnMinLevelValF to a value equal to the lowest contour level
picked.
Default: <dynamic>
-
cnMaxLevelValF
-
When the cnLevelSelectionMode is
ManualLevels, the
value of cnMaxLevelValF, if set, determines the highest
contour level. Otherwise, ContourPlot sets the
cnMaxLevelValF to a value equal to the highest contour level
picked.
Default: <dynamic>
-
cnLevels
-
An array of floats containing the contour levels used to render the
contour plot. If the cnLevelSelectionMode is
ExplicitLevels, you may set these values
yourself. Otherwise, the ContourPlot object sets the
elements of this array.
Default: <dynamic>
-
cnMonoLevelFlag
-
When cnMonoLevelFlag is set True, the scalar resource
cnLevelFlag sets the level flag controlling the appearance
of the line and/or the line label to a single value. In this case, the
cnLineLabelInterval resource has no effect. Otherwise, when
cnMonoLevelFlag is set False, you can set the level flag for
each line individually using the resource cnLevelFlags, or
set line labels to appear at uniform contour intervals using the
resource cnLineLabelInterval.
Default: False
-
cnLevelFlag
-
When cnMonoLevelFlag is set True, this resource of type
NhlTcnLevelUseMode
sets the rendering of all contour levels to one of four possible
values:
NoLine
- No lines or labels appear.
LineOnly
- Lines but no labels appear.
LabelOnly
- Labels but no lines appear.
LineAndLabel
- Both lines and labels appear.
Note that the resources cnLinesOn and cnLineLabelsOn
must both be set True to enable all possible settings of
cnLevelFlag.
Default: LineOnly
-
cnLevelFlags
-
When cnMonoLevelFlag is False, cnLevelFlags is an
array of type NhlTcnLevelUseModeGenArray
that allows you individual control over whether a line and/or a line
label is to appear at each contour level. It has no effect on contour
fill. There are four choices:
NoLine
- No lines or labels appear at the contour level.
LineOnly
- Lines but no labels appear at the contour level.
LabelOnly
- Labels but no lines appear at the contour level.
LineAndLabel
- Both lines and labels appear at the contour level.
Note that cnLinesOn and cnLineLabelsOn exert
underlying control over the appearance of contour lines and line labels.
If cnLinesOn is set False, no lines will appear regardless of
the values of any cnLevelFlags elements; likewise, if
cnLineLabels is False, no line labels will appear.
If cnMonoLevelFlag is False and you do not explicitly set
cnLevelFlags, the ContourPlot object will set
its elements for you based on the value of
cnLineLabelInterval. Elements will be set to
LineOnly except that if cnLineLabelInterval is
greater than 0, elements separated by the interval of
cnLineLabelInterval will be set to
LineAndLabel. This effect will occur both at
initialization and any time you explicitly set
cnLineLabelInterval.
Default: <dynamic>
-
cnLineLabelInterval
-
When cnMonoLevelFlag is False and you do not explicitly set
the array cnLevelFlags, a positive value of
cnLineLabelInterval sets the number of levels from a labeled
level to the next labeled level. The interval is generated in both
directions from the contour level requiring the least number of
significant digits to express (with the value 0.0 considered to
require zero significant digits). If cnLineLabelInterval is
less than or equal to zero, then no contour levels are labeled.
Default: 2
-
cnLinesOn
-
If this boolean resource is set False, no contour lines will appear
in the contour plot, regardless of the values contained in the
cnLevelFlags array resource. It has no effect on line labels.
Default: True
-
cnLineDrawOrder
-
This resource of type NhlTDrawOrder determines
when the contour lines are drawn relative to other elements of the
plot. There are three choices:
PreDraw
- Draw the contour lines before the standard draw; the lines will be
overlaid by any subsequently drawn elements.
Draw
- Draw the lines during the standard draw; the lines will overlay any
elements drawn during the predraw phase, but will underlie elements drawn
during the postdraw phase.
PostDraw
- Draw the lines after the standard draw; the lines will overlay any
elements drawn during the predraw and draw phases.
Default: Draw
-
cnMonoLineColor
-
When set True, all contour lines are set to a single
color, as specified by the value of the scalar resource cnLineColor.
Otherwise, the elements of the array resource cnLineColors
control the color of each line individually.
Default: True
-
cnLineColor
-
When cnMonoLineColor is set True, this resource of type NhlTColorIndex
sets a uniform color for all contour lines.
Default: Foreground (1)
-
cnLineColors
-
When cnMonoLineColor is False, each element of this array
resource of type NhlTColorIndexGenArray individually sets the color of the contour line drawn at the
corresponding contour level. If the array is not set explicitly, it
will dynamically default to a set of colors spread numerically over
the range of defined HLU color indexes. The colors used will therefore
depend on the number of contour levels. If the array currently
contains fewer elements than cnLevelCount, more elements will
be added to the array and given values according to the default color
assignment scheme; existing elements with valid color index values will not
be modified.
Default: <dynamic>
-
cnMonoLineDashPattern
-
When set True, all contour lines are rendered using the same dash pattern, as specified by the
value of the scalar resource cnLineDashPattern. Otherwise,
the elements of the array resource cnLineDashPatterns control
the dash pattern of each line individually.
Default: True
-
cnLineDashPattern
-
When cnMonoLineDashPattern is set True, this resource of type NhlTDashIndex
sets a uniform dash pattern for all contour lines.
Default: SolidLine (0)
-
cnLineDashPatterns
-
When cnMonoLineDashPattern is False, this array resource of
type NhlTDashIndexGenArray
individually sets the dash
pattern of a contour line drawn at the corresponding contour
level. If the array is not set explicitly, the
ContourPlot object will assign sequential dash
pattern indexes to each array element--starting with dash pattern
index 1, not
"SolidLine" (0)--up to the maximum number of
existing dash patterns. Thereafter, it will repeat the sequence using
modular arithmetic. If the array currently contains fewer elements
than cnLevelCount, more elements will be added to the array
and given values according to the same assignment scheme; existing
elements with valid dash pattern index values will not be modified.
Default: <dynamic>
-
cnMonoLineThickness
-
When set True, all contour lines are rendered using the same line
thickness, as specified by the value of the scalar resource
cnLineThicknessF. Otherwise, the elements of the array
resource cnLineThicknesses control the thickness of each line
individually.
Default: True
-
cnLineThicknessF
-
When cnMonoLineThickness is True, this resource sets a uniform
line thickness for all contour lines.
Default: 1.0
-
cnLineThicknesses
-
If cnMonoLineThickness is False, each element of this array
resource specifies the line thickness of a contour line drawn at the
corresponding contour level. If the array is not set explicitly, all
elements default to the value 1.0. If the array currently contains
fewer elements than cnLevelCount, more elements will be added
to the array and set to the default value, 1.0; existing elements with
valid line thicknesses (greater than 0.0) will not be modified.
Default: 1.0 for all elements
-
cnLineDashSegLenF
-
This resource indicates the length of each segment of the dash patterns used to draw contour
lines. It is the length in NDC units before the
dash pattern repeats itself. If cnLineLabelPlacementMode is
set to
Constant the line labels are rendered as part of
the dash pattern, and therefore cnLineDashSegLenF also
controls the spacing between the line labels.
cnLineDashSegLenF automatically scales with changes in the
size of the viewport of the ContourPlot
object. ContourPlot sets its default value
dynamically based on the ratio of the actual plot viewport width to
the reference viewport width.
Default: 0.15 (for a viewport width of 0.6)
-
cnFillOn
-
This boolean resource controls whether the areas between contour levels
are filled using a fill pattern (possibly solid) and a fill color.
Default: False
-
cnRasterModeOn
-
If this boolean resource is set True, ContourPlot
generates a representation of the data by individually assigning
colors to the elements of a two-dimensional array of rectangular cells
superimposed on an area bounding the data grid. This contrasts with
the area fill method, in which a plot is generated by coloring the
irregular areas formed by the boundaries of the lines defining
adjacent contour levels. When raster mode is in effect, only solid
fill is possible, and therefore the following resources have no
effect:
- cnFillBackgroundColor
- cnMonoFillColor
- cnFillColor
- cnMonoFillPattern
- cnFillPattern
- cnFillPatterns
- cnMonoFillScale
- cnFillScaleF
- cnFillScales
- cnMissingValFillPattern
- cnMissingValFillScaleF
The color chosen for each cell is based on the color indexes contained
in the cnFillColors array resource unless the cell center is
in a missing-value area or outside the grid. If the cell center is in
a missing-value area, it is assigned the color index given by the value
of the resource cnMissingValFillColor. If it is outside the grid,
it is set to the value Background (0). Also note that since
only solid fill is possible, the fill color Transparent (-1) is
not supported; if an element of cnFillColors or
cnMissingValFillColor is set to Transparent,
ContourPlot substitutes the value Background
in the cell array.
In general, within the limits of the Workstation
output device resolution, the quality of a raster plot improves as
the density of the cell array is increased. However, processing time
and memory requirements also increase.
Default: False
-
cnRasterSmoothingOn
-
If cnRasterSmoothingOn
is set True, the level (and hence the color)
assigned to each cell is determined by interpolating the values of
neighboring points in the data grid. If cnRasterSmoothingOn
is False, ContourPlot creates a discrete raster plot:
any raster cell whose center lies within the rectangular area bounded by lines
halfway between each grid point (in data space) is given the color
assigned to the level representing the grid point datum.
The effect of this resource on the appearance of the plot depends
on the density of the data relative to the number of cells in the
raster array as limited by the resolution of the Workstation
output device. If the data grid is more densely spaced than the cell
array, two plots generated with opposite settings of this resource
will appear qualitatively similar, although there may be differences
of detail. However, if the data grid is sparse relative to the cell
array density, turning smoothing off results in a plot that appears
blocky and discontinuous compared to a plot drawn with smoothing
turned on.
Default: False
-
cnRasterMinCellSizeF
-
This resource supplies a lower limit for the size of a raster cell
whenever ContourPlot determines the cell array
density dynamically. It applies in all situations except when you set
the cell size explicitly using cnRasterCellSizeF or you
set cnRasterSampleFactorF to 0.0. It prevents
the cell array from becoming unreasonably large when drawing a raster
plot on a high-resolution workstation such as the
PSWorkstation. Set it to a smaller value if you
actually require plots at higher resolution. However, note that there
is an inverse quadratic relationship between the value of this resource
and the size of the cell array, with consequent effects on storage
requirements and processing time. You can use a larger value if you want quick
plots where detail is not so important.
Default: 0.001
-
cnRasterSampleFactorF
-
If cnRasterCellSizeF is not explicitly set,
ContourPlot adjusts the raster cell size dynamically
in order to create a plot with as much resolution as is necessary
and/or practical, while simultaneously trying to keep the cell array
as small as possible. The default minimum cell size is the
workstation device pixel size or the value of
cnRasterMinCellSizeF, whichever is
bigger. ContourPlot uses this minimum size as the
default dynamic size whenever cnRasterSmoothingOn is True.
If cnRasterSmoothingOn is False,
ContourPlot uses a larger default size if there is a
linear mapping from data to NDC space and if the data grid has a lower
resolution than a grid of minimum-sized cells would have. Linearity is
considered separately along each axis: if the plot has one log axis
and one linear axis, for example, rectangular cells may be created
with the dimension along the log axis set to the minimum size while
the linear dimension has a much larger size. If the plot is overlaid
on a map projection, cells are set to the minimum size except for the
special case of a non-rotated cylindrical equidistant projection with
the center latitude set to 0.0.
Based on the dynamically determined default cell size and the NDC
width and height of the data extent, ContourPlot
calculates the number of cells needed along each dimension of the cell
array. The cnRasterSampleFactorF resource acts as a
multiplier of the number of raster cells along each dimension. Setting it
to 2.0, for example, would double the number of cells along each axis,
quadrupuling the overall size of the cell array. However, if this
operation would result in the cells falling below the minimum size
specified by cnRasterMinCellSizeF, their number is limited as
required along the affected dimension. You can set
cnRasterSampleFactorF to a value less than 1.0 in order
improve plotting speed; the tradeoff will be diminished plot quality.
As a special case, if cnRasterSampleFactorF is set to 0.0,
ContourPlot creates the cell array the same size as
the data array, resulting in a one-to-one correspondence between
data grid points and cells in the raster array. This is regardless of
the Workstation device resolution or the setting of
cnRasterMinCellSizeF.
Default: 1.0
-
cnRasterCellSizeF
-
If this resource is explicitly set to a value greater than 0.0, it
specifies the height and width of each cell of the raster array in
NDC units. The number of cells in the raster array is determined by
how many cells of the specified size it takes to cover a rectangular
area bounding the data grid. In this case, the number of elements in
the data grid, the resolution of the Workstation
output device, and the setting of cnRasterSampleFactorF have
no effect on the size of the raster cell array.
No limit is placed on how small you may set this resource; it
is not affected by the value of cnRasterMinCellSizeF. However,
note that halving its size quadruples the overall number of cells in
raster array, with consequent effects on processing time and memory
usage. Once set, the value of this resource scales proportionally to
changes in the viewport width, ensuring the same relative quality of
output and processing time for any plot size.
Giving cnRasterCellSizeF a value less than or equal to 0.0
has the effect of 'unsetting' the resource, restoring the default
method of sizing the raster cell array based on the device resolution,
the size of the data array, and the values of the resources
cnRasterMinCellSizeF and cnRasterSampleFactorF.
Even when unset, you may retrieve the value of this resource after a
draw operation to find the minimum dimension of the cells in NDC units
that was actually used to draw the plot.
Default: <dynamic>
-
cnFillDrawOrder
-
This resource of type NhlTDrawOrder determines
when areas of the contour plot are filled relative to the drawing of
other elements of the plot. There are three choices:
PreDraw
- Fill contour areas before the standard draw phase; fill areas will be
overlaid by any subsequently drawn elements.
Draw
- Fill contour areas during the standard draw phase; the fill will
overlay any elements drawn during the predraw phase, but will
underlie elements drawn during the postdraw phase.
PostDraw
- Fill contour areas after the standard draw; the fill will overlay any
elements drawn during the predraw and draw phases.
You must manipulate this resource in order to mask contours within the
context of an Overlay of multiple plot objects.
Default: Draw
-
cnFillBackgroundColor
-
This resource of type NhlTColorIndex
sets the background color used for ContourPlot fill
patterns. It only has an effect for fill patterns that are neither
SolidFill nor HollowFill. By default, this
resource is set to Transparent, resulting in the
underlying background appearing in the spaces between the elements of
the fill pattern. If set to any other valid color index, the specified
color will solidly fill all spaces between the fill pattern elements.
Default: Transparent
-
cnMonoFillColor
-
When set True, all contour fill areas are set to a single
color, as specified by the value of the scalar resource cnFillColor.
When False, the elements of the array resource cnFillColors
control the color of each fill area individually.
Default: False
-
cnFillColor
-
When cnMonoFillColor is set True, this resource of type NhlTColorIndex
sets a uniform fill color for all contour fill areas.
Default: Foreground
-
cnFillColors
-
If cnMonoFillColor is False, each element of this array of
type NhlTColorIndexGenArray
specifies the color of a contour fill area. Note that there is always
one more fill area than there are contour levels. The first
element of cnFillColors specifies the fill pattern for any
region containing a data value less than the value of
cnMinLevelValF, while the highest currently used element of
cnFillColors specifies the fill pattern for regions
containing data values greater than the value of
cnMaxLevelValF. Otherwise cnFillColors works in a
fashion similar to cnLineColors. If the array is not set
explicitly, it will default to a set of color indexes sequentially
incremented beginning with color index 1 (NhlFOREGROUND). If the array
currently contains fewer elements than cnLevelCount+1,
more elements will be added to the array and given values according to
the default color assignment scheme; existing elements with valid
color index values will not be modified.
Default: <dynamic>
-
cnMonoFillPattern
-
When set True, all contour fill areas use a single fill pattern, as specified by the
value of the scalar resource cnFillPattern. When False, the
elements of the array resource cnFillPatterns control the
pattern used for each fill area individually.
Default: True
-
cnFillPattern
-
When cnMonoFillPattern is set True, this resource of type NhlTFillIndex
sets a uniform pattern for all
contour fill areas.
Default: SolidFill
-
cnFillPatterns
-
If cnMonoFillPattern is False, each element of this array of
type NhlTFillIndexGenArray
specifies the fill pattern used
for a contour fill area. Note that there is always one more fill area
than there are contour levels. The first element of
cnFillPatterns specifies the fill pattern for any region
containing a data value less than the value of
cnMinLevelValF, while the highest currently used element of
cnFillPatterns specifies the fill pattern for regions
containing data values greater than the value of
cnMaxLevelValF. If the array is not set explicitly, the
ContourPlot object will assign sequential fill
pattern indexes (starting with fill index 1--not "SolidFill", which
is fill index 0) to each array element up to the maximum number of
existing fill patterns. Thereafter it will repeat the sequence using
modular arithmetic. If the array currently contains fewer elements
than cnLevelCount+1, more elements will be added to
the array and given values according to the same assignment scheme;
existing elements with valid fill pattern index values will not be
modified.
Default: <dynamic>
-
cnMonoFillScale
-
When set True, all contour fill patterns are scaled by a single
factor, as specified by the value of the scalar resource
cnFillScale. When False, the elements of the array resource
cnFillScales control the scaling applied to the fill pattern
assigned to each fill area individually.
Default: True
-
cnFillScaleF
-
When cnMonoFillScale is True, this resource sets a uniform
scaling value for all contour fill patterns.
Default: 1.0
-
cnFillScales
-
When cnMonoFillScale is False, the cnFillScales
array resource allows individual control of the scaling of the pattern
used for each contour fill area. It has no effect for solid fill (fill
pattern
"SolidFill", index 0). Values greater than 1.0
make the pattern spacing bigger than the default spacing, resulting in
a fill that appears less dense. Values less than 1.0 have the opposite
effect. Values less than or equal to 0.0 are invalid, generate a
warning message, and are reset to the default value, 1.0.
Note that there is always one more fill area than there are contour
levels. If the array is not set explicitly, the
ContourPlot object will assign the value 1.0 to all
elements of the array. If the array currently contains fewer elements
than cnLevelCount+1, more elements will be added to
the array and given the same default value of 1.0; existing elements
with valid fill scale index values will not be modified.
Default: 1.0 for all elements
-
cnLabelDrawOrder
-
This resource of type NhlTDrawOrder determines
when contour plot labels are drawn relative to the drawing of other elements
of the plot. There are three choices:
PreDraw
- Draw contour labels before the standard draw phase; the labels
will be overlaid by any subsequently drawn elements.
Draw
- Draw contour labels during the standard draw phase; the labels
will overlay any elements drawn during the predraw phase as well as
fill and contour lines drawn during the standard draw phase, but will
underlie elements drawn during the postdraw phase.
PostDraw
- Draw contour labels after the standard draw; the labels will overlay any
elements drawn during the predraw and draw phases as well as lines and fill
drawn during the postdraw phase.
Default: Draw
-
cnLabelMasking
-
This resource controls whether ContourPlot lines and fill
are masked in the areas where ContourPlot labels are to
appear. When working with raster type devices, it is seldom necessary
to mask for labels, since they can be made to solidly overlay the
areas where they appear. Also there is a noticeable performance penalty when
labels are masked, so the use of this option is discouraged unless it is
necessary.
Default: False
-
cnLowUseHighLabelRes
-
If the boolean resource cnLowUseHighLabelRes is set True, all
resources applying to low labels, except for
cnLowLabelString, take their value from the corresponding
high label resources.
Default: False
-
cnHighUseLineLabelRes
-
If the boolean resource cnHighUseLineLabelRes is set True,
all resources applying to high labels, except for
cnHighLabelString and cnHighLabelAngleF, take their
value from the corresponding line label resources.
Default: False
-
cnConstFUseInfoLabelRes
-
If the boolean resource cnConstFUseInfoLabelRes is set True,
all the resources applying to the constant field, except for
cnConstFLabelString, take their value from the corresponding
informational label resources.
Default: False
-
cnHighLowLabelOverlapMode
-
cnHighLowLabelOverlapMode is a resource of type NhlTcnHighLowLabelOverlapMode. It controls how high and low labels are allowed to overlap other elements of
the ContourPlot plot and has six possible settings:
IgnoreOverlap
- The ContourPlot object does nothing to prevent high
and low labels from overlapping other elements of the
ContourPlot plot.
OmitOverHL
- The ContourPlot object omits high and low labels that would
overlap previously determined high or low labels.
OmitOverVP
- The ContourPlot object omits high and low labels that
would overlap the edge of the viewport.
OmitOverVPAndHL
- The ContourPlot object omits high and low labels that
would overlap the edge of the viewport or previously determined high
or low labels.
AdjustVP
- The ContourPlot object adjusts the position of
high and low labels that would overlap the edge of the viewport enough to
eliminate the problem.
AdjustVPOmitOverHL
- The ContourPlot object adjusts the position of
high and low labels that would overlap the edge of the viewport enough to
eliminate the problem and omits high and low labels that would
overlap previously determined high or low labels.
V4.1 Status Note 5
Default: IgnoreOverlap
-
cnLabelScalingMode
-
This resource of type NhlTScalingMode
determines how to scale the numbers representing scalar field data
values in the ContourPlot object's
labels. cnLabelScalingMode applies to numbers that represent
data values in line labels, high and low labels, the informational
label, and the constant field label. There are five choices:
ScaleFactor
- The ContourPlot object divides the
data value by the value of cnLabelScaleValueF to obtain the
number that appears in the label.
ConfineToRange
- The ContourPlot object uses
cnLabelScaleValueF as an exclusive upper bound. A scale
factor is selected such that the number used to represent the data
value with the maximum absolute value will be less than
cnLabelScaleValueF, but greater than or equal to
cnLabelScaleValueF divided by 10.0. As an example, setting
cnLabelScaleValueF to 100.0 would result in a scaled number
in the range 10.0 to 99.999....
TrimZeros
- The ContourPlot object selects a scale factor such
that the number representing the data value with the maximum absolute
value will have the fewest possible extra zeros. If the maximum
absolute value were 245000, for instance, it would scale to 245. If it
were 0.000245, it would scale to 0.245. (The zero conventionally
placed before the decimal point of a number less than 1.0 is not
considered.)
MaxSigDigitsLeft
- The ContourPlot object selects a scale factor such
that the number representing the data value with the maximum absolute
value will have its rightmost significant digit directly to the left of the
decimal point. The number of significant digits is determined by the
format string resource, cnMaxDataValueFormat.
AllIntegers
- The ContourPlot object selects a scale factor such
that the numbers representing labeled contour levels (as determined
by examination of the values of the cnLabelFlags array) can be
rendered as integers.
In each case, the scale factor selected is placed into the read-only
resource, cnLabelScaleFactorF. Note that the label value
multiplied by the scale factor returns the actual data value
represented.
Default: ScaleFactor
-
cnLabelScaleValueF
-
The interpretation of cnLabelScaleValueF depends on the value
of the enumerated resource cnLabelScalingMode. When
cnLabelScalingMode is set to
ScaleFactor, data values
are divided by the value of cnLabelScaleValueF to obtain
the numbers appearing in ContourPlot object labels. If
cnLabelScalingMode is set to ConfineToRange, the
cnLabelScaleValueF represents an exclusive upper bound for
the numbers used to represent the data values. For other values of
cnLabelScalingMode, the cnLabelScaleValueF resource
is ignored.
Default: 1.0
-
cnLabelScaleFactorF
-
cnLabelScaleFactorF is a read-only resource that contains the
current scale factor that applies to ContourPlot object
labels. Multiplying the numbers in the labels by the value of
cnLabelScaleFactorF gives the actual data values the numbers
represent. The ContourPlot object calculates its
value based on the data value with the maximum absolute value, the
current mode of the enumerated resource, cnLabelScalingMode,
and perhaps the value of cnLabelScaleValueF. Its value may
also be influenced by the number of significant digits specified by
the format specification resource, cnMaxDataValueFormat. You may
output the value of this resource in the informational label using the
the substitution string "$SFU$".
Default: <dynamic>
-
cnMaxDataValueFormat
-
The cnMaxDataValueFormat resource is a string that specifies
the printing format for the maximum data value according to the HLU Floating Point Format Specification
scheme. This resource serves as a master control for formatting any
number representing ScalarField data when used in a
ContourPlot label. If the format string for a label type
sets the dynamic attribute for any of its numerical format
parameters, the parameter's value is determined by the value of the
corresponding parameter in the cnMaxDataValueFormat
specifier. Thus, you can control the numerical format parameters
for all labels by adjusting a single resource. For some format
parameters, notably the leftmost significant digit parameter, you must
use the dynamic attribute in order to apply the parameter in a
meaningful way.
Default: "*+.4^sg"
-
cnLineLabelsOn
-
If this boolean resource is set False, contour line labels will not
appear in the contour plot. Note that this resource overrides the
values contained in the cnLevelFlags array resource with respect to
line labels, but has nothing to do with whether contour lines appear.
Default: True
-
cnExplicitLineLabelsOn
-
This boolean resource controls the way ContourPlot
handles the cnLineLabelStrings array resource. When set True,
ContourPlot will not modify explicitly set values of
the line label strings. When cnExplicitLineLabelsOn is set
False, ContourPlot ignores values of
cnLineLabelStrings set by the user.
Default: False
-
cnLineLabelPlacementMode
-
This resource of type NhlTcnLineLabelPlacementMode
determines the algorithm ContourPlot uses to place line
labels. There are three choices:
Constant
- ContourPlot draws line labels as an integral part
of the line dash pattern. As a result, the labels are equally spaced
along the lines. You can control the spacing between the labels by setting
the cnLineDashSegLenF resource.
Randomized
- ContourPlot places labels using a randomizing
algorithm to vary the distance between labels. Currently there are no
native resources for controlling the density of labels when using the
Randomized mode. However, it is possible to directly
control Conpack parameters that have this capability by
setting the low level control resource cnConpackParams.
Computed
- ContourPlot uses a more complex
algorithm involving the local gradient, number of contour lines in a
region, cumulative change in direction, and an optimum distance value
to determine the best location for line labels. This method usually gives
the best-looking results. Currently there are no
native resources for controlling the density of labels when using the
Computed mode. However, it is possible to directly
control Conpack parameters that have this capability by
setting the low level control resource
cnConpackParams.
V4.1 Status Note 3
Default: Randomized
-
cnLineLabelStrings
-
Each element of the array resource cnLineLabelStrings
specifies a string to be drawn at a contour level. Note that there is
an element of this array for each contour level, whether or not (based
on the contents of the cnLevelFlags array) a label will
actually be drawn. If cnExplicitLineLabelsOn is set False,
ContourPlot automatically sets the contents of the
array to a set of strings representing the values of the contour
levels, scaled based on the value of cnLabelScaleFactorF, and
formatted based on the contents of cnMaxDataValueFormat and
cnLineLabelFormat.
If cnExplicitLineLabelsOn is set True,
ContourPlot will not modify any initialized element
of the array, thus allowing you to set its values to strings of your choice.
If you set the resource with an array containing fewer elements than
the current number of levels, the remaining elements will be assigned
using the automatic method.
Default: <dynamic>
- cnMonoLineLabelFontColor
-
When set True, all contour line labels are rendered using a single
color, as specified by the value of the scalar resource
cnLineLabelFontColor. When False, the elements of the array
resource cnLineLabelFontColors control the color of each line
label individually.
Default: True
-
cnLineLabelFontColor
-
When cnMonoLineLabelColor is set True, this resource of type NhlTColorIndex
sets a uniform color for all contour line labels.
Default: Foreground
-
cnLineLabelFontColors
-
When cnMonoLineLabelFontColor is False, each element of this array of
type NhlTColorIndexGenArray
specifies the color of a contour line label. If the array
is not set explicitly, it will dynamically default to a set of colors
spread numerically over the range of defined HLU color indexes. The
colors used will therefore depend on the number of contour levels. If
the array currently contains fewer elements than
cnLevelCount, more elements will be added to the array and
given values according to the default color assignment scheme;
existing elements with valid color index values will not be modified.
Default: <dynamic>
-
cnLineLabelFormat
-
The cnLineLabelFormat resource is a string that specifies the
printing format for the numeric portion of line labels according to
the HLU Floating Point Format Specification
scheme. It does not apply when the user explicitly sets the elements
of cnLineLabelStrings. If any of the numerical format
parameters have the dynamic attribute on, the corresponding parameter
in the cnMaxDataValueFormat resource determines the
parameter's value. The default value uses the shorthand notation '*+'
to cause all numeric format parameters to be determined dynamically.
Default: "*+^sg"
-
cnLineLabelFontHeightF
-
This resource controls the height, in NDC units, of characters used
in the text of line labels. The character width scales proportionally,
unless you also modify the aspect ratio using the
cnLineLabelFontAspectF resource. The line label text height
scales with changes to the viewport width, unless you explicitly set
cnLineLabelFontHeightF during the same call.
Default: <dynamic> -- 0.012 for a viewport width of 0.6
-
cnLineLabelFont
-
This resource of type NhlTFont
specifies the font used to render line labels.
Default: "pwritx"
-
cnLineLabelFontAspectF
-
This resource determines the shape of the line label characters. Values
increasing from 1.0 result in thinner characters. Values decreasing from 1.0
make the characters wider. Values less than or equal to 0.0 result in a
WARNING message and a restoration of the default value.
Default: 1.3125
-
cnLineLabelFontThicknessF
-
Sets the thickness of the line used to draw line label text. The value
acts as a multiplier of a (device-dependent) unit thickness. This
resource is ignored when the cnLineLabelLabelFont specifies a filled
font (font indexes 21-22, 25-26, 29-30, and 33-37).
Default: 1.0
-
cnLineLabelFontQuality
-
This resource of type NhlTFontQuality determines
the quality of the font used to draw ContourPlot line labels.
Default: High
-
cnLineLabelConstantSpacingF
-
Normally when cnLineLabelFontQuality is set to
High,
the ContourPlot object writes line label text with
proportional spacing. Setting the cnLineLabelConstantSpacingF
to a value greater than 0.0 overrides this behavior. Instead, the
distance from the start of one character to the next is computed by
multiplying a single standard character width by the value of
cnLineLabelConstantSpacingF. When
cnLineLabelConstantSpacingF has a value between 0.0 and 1.0,
characters will overlap. A value of 1.0 implies, on average, no space
between characters, while values increasing from 1.0 cause the space
between characters to grow. This parameter is ignored when
cnLineLabelFontQuality is not High. Values less
than 0.0 result in an error and are replaced with the default value.
Default: 0.0
-
cnLineLabelAngleF
-
When cnLineLabelAngleF has a value less than 0.0,
ContourPlot line labels are angled in the direction of
the tangent of the contour line at the location of the
label. Otherwise, cnLineLabelAngleF specifies the angle, in
degrees, of all contour line labels. If
cnLineLabelPlacementMode is set to
Constant,
this resource has no effect: the line labels are always placed along
the contour line.
Default: -1.0
-
cnLineLabelFuncCode
-
This resource of type NhlTCharacter sets the function code character that the low level utilities will
use when parsing the label string.
Default: :
-
cnLineLabelBackgroundColor
-
This resource sets the background color used to fill the box surrounding
each line label. If you do not want the box to be filled at all, set
cnLineLabelBackgroundColor to
Transparent (-1). If
cnLineLabelPlacementMode is set to Constant,
this resource has no effect: a boxed background is not available.
Default: Background
-
cnLineLabelPerimOn
-
cnLineLabelPerimOn is a boolean resource that determines
whether ContourPlot will draw an outline around the
perimeter of the box surrounding contour line labels. If set False, no
outline will be drawn. If cnLineLabelPlacementMode is set to
Constant, this resource has no effect: no perimeter can be
drawn around the label.
Default: True
-
cnLineLabelPerimSpaceF
-
cnLineLabelPerimSpaceF determines the spacing or margin
between the text of the line label and the edge of the line label box
as a fraction of the current line label text height. If
cnLineLabelPlacementMode is set to
Constant,
this resource has no effect: no perimeter can be drawn around the
label.
Default: 0.33
-
cnLineLabelPerimColor
-
This resource sets the HLU color index used to draw the perimeter of
the line label box. If cnLineLabelPlacementMode is set to
Constant, this resource has no effect: no perimeter can
be drawn around the label.
Default: Foreground
-
cnLineLabelPerimThicknessF
-
This resource determines the thickness of the perimeter line around
the line label box. The value acts as a multiplier of a
(device-dependent) unit thickness. If
cnLineLabelPlacementMode is set to
Constant,
this resource has no effect: no perimeter can be drawn around the
label.
Default: 1.0
-
cnHighLabelsOn
-
If this boolean resource is set True, ContourPlot
places labels at regions representing local maximums in the dataset.
Default: False
-
cnHighLabelString
-
Specifies the string to use when drawing high labels. The string may
contain function codes and/or substitution
substrings. ContourPlot will replace the substring "$ZDV$"
with a number representing the value at the point where the label is to
appear. cnHighLabelFormat determines the format of the number
and cnLabelScaleFactorF determines the scaling of
the actual data value.
Default: "H:B:$ZDV$:E:"
-
cnHighLabelFormat
-
The cnHighLabelFormat resource is a string that specifies the
printing format for the numeric portion of high labels according to the HLU Floating Point Format Specification scheme.
If any of the numerical format parameters
have the dynamic attribute on, the corresponding parameter in the
cnMaxDataValueFormat resource determines the parameter's value.
The default value uses the shorthand notation '*+' to cause all
numeric format parameters to be determined dynamically.
Default: "*+^sg"
-
cnHighLabelFontHeightF
-
This resource controls the height, in NDC units, of characters used
in the text of high labels. The character width scales proportionally,
unless you also modify the aspect ratio using the
cnHighLabelFontAspectF resource. The high label text height
scales with changes to the viewport width, unless you explicitly set
cnHighLabelFontHeightF during the same call.
Default: <dynamic> -- 0.012 for a viewport width of 0.6
-
cnHighLabelFont
-
This resource of type NhlTFont
specifies the font used to render high labels.
Default: "pwritx"
-
cnHighLabelFontColor
-
This resource specifies the HLU color index used to render high label text.
If cnHighUseLineLabelRes is
True, this resource takes its value from the first element of the
cnLineLabelFontColors array.
Default: True
-
cnHighLabelFontAspectF
-
This resource determines the shape of the high label
characters. Values increasing from 1.0 result in thinner
characters. Values decreasing from 1.0 make the characters
wider. Values less than or equal to 0.0 result in a WARNING message
and a restoration of the default value.
Default: 1.3125
-
cnHighLabelFontThicknessF
-
Sets the thickness of the line used to draw high label text. The value
acts as a multiplier of a (device-dependent) unit thickness. This
resource is ignored when the cnHighLabelFont specifies a filled
font (font indexes 21-22, 25-26, 29-30, and 33-37).
Default: 1.0
-
cnHighLabelFontQuality
-
This resource of type NhlTFontQuality determines
the quality of the font used to draw ContourPlot high labels.
Default: High
-
cnHighLabelConstantSpacingF
-
Normally when cnLineLabelFontQuality is set to
High,
the ContourPlot object writes line label text with
proportional spacing. Setting the cnLineLabelConstantSpacingF
to a value greater than 0.0 overrides this behavior. Instead, the
distance from the start of one character to the next is computed by
multiplying a single standard character width by the value of
cnLineLabelConstantSpacingF. When
cnLineLabelConstantSpacingF has a value between 0.0 and 1.0,
characters will overlap. A value of 1.0 implies, on average, no space
between characters, while values increasing from 1.0 cause the space
between characters to grow. This parameter is ignored when
cnLineLabelFontQuality is not High. Values less
than 0.0 result in an error and are replaced with the default value.
Default: 0.0
-
cnHighLabelAngleF
-
This resource specifies the angle, in degrees, of high label text and
its surrounding box.
Default: 0.0
-
cnHighLabelFuncCode
-
This resource of type NhlTCharacter sets the
function code character that the low level utilities will use when
parsing the high label string.
Default: :
-
cnHighLabelBackgroundColor
-
This resource sets the background color used to fill the box surrounding
each high label. If you do not want the box to be filled at all, set
cnHighLabelBackgroundColor to
Transparent (-1).
Default: Background
-
cnHighLabelPerimOn
-
cnHighLabelPerimOn is a boolean resource that determines whether
ContourPlot will draw an outline around the perimeter of the box
surrounding contour high labels. If set False, no outline will be drawn.
Default: True
-
cnHighLabelPerimSpaceF
-
cnHighLabelPerimSpaceF determines the spacing or margin
between the text of the high label and the edge of the high label box
as a fraction of the current high label text height.
Default: 0.33
-
cnHighLabelPerimColor
-
This resource sets the HLU color index used to draw the perimeter of
the high label box.
Default: Foreground
-
cnHighLabelPerimThicknessF
-
This resource determines the thickness of the perimeter line around
the high label box. The value acts as a multiplier of a
(device-dependent) unit thickness.
Default: 1.0
-
cnLowLabelsOn
-
If this boolean resource is set True, ContourPlot
places labels at regions representing local minimums in the dataset.
Default: True
-
cnLowLabelString
-
Specifies the string to use when drawing low labels. The string may
contain function codes and/or substitution
substrings. ContourPlot will replace the substring
"$ZDV$" with a number representing the value at the point where the
label is to appear. cnLowLabelFormat determines the format of
the number and cnLabelScaleFactorF determines the scaling of
the actual data value.
Default: "L:B:$ZDV$:E:"
-
cnLowLabelFormat
-
The cnLowLabelFormat resource is a string that specifies the
printing format for the numeric portion of low labels according to the HLU Floating Point Format Specification scheme.
If any of the numerical format parameters
have the dynamic attribute on, the corresponding parameter in the
cnMaxDataValueFormat resource determines the parameter's value.
The default value uses the shorthand notation '*+' to cause all
numeric format parameters to be determined dynamically.
Default: "*+^sg"
-
cnLowLabelFontHeightF
-
This resource controls the height, in NDC units, of characters used
in the text of low labels. The character width scales proportionally,
unless you also modify the aspect ratio using the
cnLowLabelFontAspectF resource. The low label text height
scales with changes to the viewport width, unless you explicitly set
cnLowLabelFontHeightF during the same call.
Default: <dynamic> -- 0.012 for a viewport width of 0.6
-
cnLowLabelFont
-
This resource of type NhlTFont
specifies the font used to render low labels.
Default: "pwritx"
-
cnLowLabelFontColor
-
This resource specifies the HLU color index used to render low label text.
Default: True
-
cnLowLabelFontAspectF
-
This resource determines the shape of the low label
characters. Values increasing from 1.0 result in thinner
characters. Values decreasing from 1.0 make the characters
wider. Values less than or equal to 0.0 result in a WARNING message
and a restoration of the default value.
Default: 1.3125
-
cnLowLabelFontThicknessF
-
Sets the thickness of the line used to draw low label text. The value
acts as a multiplier of a (device-dependent) unit thickness. This
resource is ignored when the cnLowLabelFont specifies a filled
font (font indexes 21-22, 25-26, 29-30, and 33-37).
Default: 1.0
-
cnLowLabelFontQuality
-
This resource of type NhlTFontQuality determines
the quality of the font used to draw ContourPlot low labels.
Default: High
-
cnLowLabelConstantSpacingF
-
Normally when cnLineLabelFontQuality is set to
High,
the ContourPlot object writes line label text with
proportional spacing. Setting the cnLineLabelConstantSpacingF
to a value greater than 0.0 overrides this behavior. Instead, the
distance from the start of one character to the next is computed by
multiplying a single standard character width by the value of
cnLineLabelConstantSpacingF. When
cnLineLabelConstantSpacingF has a value between 0.0 and 1.0,
characters will overlap. A value of 1.0 implies, on average, no space
between characters, while values increasing from 1.0 cause the space
between characters to grow. This parameter is ignored when
cnLineLabelFontQuality is not High. Values less
than 0.0 result in an error and are replaced with the default value.
Default: 0.0
-
cnLowLabelAngleF
-
This resource specifies the angle, in degrees, of low label text and
its surrounding box.
Default: 0.0
-
cnLowLabelFuncCode
-
This resource of type NhlTCharacter sets the
function code character that the low level utilities will use when
parsing the low label string.
Default: :
-
cnLowLabelBackgroundColor
-
This resource sets the background color used to fill the box surrounding
each low label. If you do not want the box to be filled at all, set
cnLowLabelBackgroundColor to
Transparent (-1).
Default: Background
-
cnLowLabelPerimOn
-
cnLowLabelPerimOn is a boolean resource that determines whether
ContourPlot will draw an outline around the perimeter of the box
surrounding contour low labels. If set False, no outline will be drawn.
Default: True
-
cnLowLabelPerimSpaceF
-
cnLowLabelPerimSpaceF determines the spacing or margin
between the text of the low label and the edge of the low label box
as a fraction of the current low label text height.
Default: 0.33
-
cnLowLabelPerimColor
-
This resource sets the HLU color index used to draw the perimeter of
the low label box.
Default: Foreground
-
cnLowLabelPerimThicknessF
-
This resource determines the thickness of the perimeter line around
the low label box. The value acts as a multiplier of a
(device-dependent) unit thickness.
Default: 1.0
-
cnInfoLabelOn
-
If this boolean resource is set False, ContourPlot
will not draw an informational label.
Default: True
-
cnInfoLabelString
-
Specifies the string to use when drawing an informational label. The
string may contain function codes and/or substitution
substrings. ContourPlot will replace the following substrings
with numeric values:
- $CIU$
- The contour interval used (value of cnLevelSpacing)
- $CMN$
- The minimum contour level (first element of cnLevels)
- $CMX$
- The maximum contour level
- $SFU$
- The scale factor used (value of cnLabelScaleFactorF)
- $ZMN$
- The minimum data value
- $ZMX$
- The maximum data value
cnInfoLabelFormat determines the format
of each number and except for the number generated from $SFU$, all
values are scaled based on the value of cnLabelScaleFactorF.
Default: "CONTOUR FROM $CMN$ TO $CMX$ BY $CIU$"
-
cnInfoLabelFormat
-
The cnInfoLabelFormat resource is a string that specifies the
printing format for the numbers generated from substitution substrings in
cnInfoLabelString according to the HLU Floating Point Format Specification scheme.
If any of the numerical format parameters
have the dynamic attribute on, the corresponding parameter in the
cnMaxDataValueFormat resource determines the parameter's value.
The default value uses the shorthand notation '*+' to cause all
numeric format parameters to be determined dynamically.
Default: "*+^sg"
-
cnInfoLabelTextDirection
-
This resource of type NhlTTextDirection specifies the direction of the text in the informational label.
The choices are:
Down
- Each character is placed below the previous character in the text string.
Across
- Each character is placed to the right of the previous character in
the text string.
These directions apply before any rotation due to
cnInfoLabelAngleF is applied to the informational label.
Default: Across
-
-
cnInfoLabelFontHeightF
-
This resource controls the height, in NDC units, of characters used
in the text of the informational label. The character width scales
proportionally, unless you also modify the aspect ratio using the
cnInfoLabelFontAspectF resource. The info label text height
scales with changes to the viewport width, unless you explicitly set
cnInfoLabelFontHeightF during the same call.
Default: <dynamic> -- 0.012 for a viewport width of 0.6
-
cnInfoLabelFont
-
This resource of type NhlTFont
specifies the font used to render the informational label.
Default: "pwritx"
-
cnInfoLabelFontColor
-
This resource specifies the HLU color index used to render
informational label text.
Default: Foreground
-
cnInfoLabelFontAspectF
-
This resource determines the shape of the informational label
characters. Values increasing from 1.0 result in thinner
characters. Values decreasing from 1.0 make the characters
wider. Values less than or equal to 0.0 result in a WARNING message
and a restoration of the default value.
Default: 1.3125
-
cnInfoLabelFontThicknessF
-
Sets the thickness of the line used to draw informational label
text. The value acts as a multiplier of a (device-dependent) unit
thickness. This resource is ignored when the cnInfoLabelFont
specifies a filled font (font indexes 21-22, 25-26, 29-30, and 33-37).
Default: 1.0
-
cnInfoLabelFontQuality
-
This resource of type NhlTFontQuality
determines the quality of the font used to draw the
ContourPlot informational label.
Default: High
-
cnInfoLabelConstantSpacingF
-
Normally when cnLineLabelFontQuality is set to
High,
the ContourPlot object writes informational label text with
proportional spacing. Setting the cnInfoLabelConstantSpacingF
to a value greater than 0.0 overrides this behavior. Instead, the
distance from the start of one character to the next is computed by
multiplying a single standard character width by the value of
cnLineLabelConstantSpacingF. When
cnLineLabelConstantSpacingF has a value between 0.0 and 1.0,
characters will overlap. A value of 1.0 implies, on average, no space
between characters, while values increasing from 1.0 cause the space
between characters to grow. This parameter is ignored when
cnInfoLabelFontQuality is not High. Values less
than 0.0 result in an error and are replaced with the default value.
Default: 0.0
-
cnInfoLabelAngleF
-
This resource specifies the angle, in degrees, of the informational
label text and its surrounding box.
Default: 0.0
-
cnInfoLabelFuncCode
-
This resource of type NhlTCharacter sets the
function code character that the low level utilities will use when
parsing the informational label string.
Default: :
-
cnInfoLabelBackgroundColor
-
This resource sets the background color used to fill the box surrounding
the informational label. If you do not want the box to be filled at all, set
cnInfoLabelBackgroundColor to
Transparent (-1).
Default: Background
-
cnInfoLabelPerimOn
-
cnInfoLabelPerimOn is a boolean resource that determines whether
ContourPlot will draw an outline around the perimeter of
the box surrounding a contour informational label. If set False, no
outline will be drawn.
Default: True
-
cnInfoLabelPerimSpaceF
-
cnInfoLabelPerimSpaceF determines the spacing or margin
between the text of the informational label and the edge of the
informational label box as a fraction of the current label text
height.
Default: 0.33
-
cnInfoLabelPerimColor
-
This resource sets the HLU color index used to draw the perimeter of
the informational label box.
Default: Foreground
-
cnInfoLabelPerimThicknessF
-
This resource determines the thickness of the perimeter line around
the informational label box. The value acts as a multiplier of a
(device-dependent) unit thickness.
-
cnInfoLabelZone
-
ContourPlot implements the informational label as an
embedded annotation. cnInfoLabelZone
specifies the PlotManager zone assigned to the
informational annotation. The PlotManager
Location Control Model requires this resource to allow control of
the informational label consistent with other annotations. If
cnInfoLabelZone is set to 0, the positional origin is the
center of the plot viewport; otherwise it is on or outside one of the
sides of the viewport.
If you create a ContourPlot object without an
active PlotManager by setting tfPlotManagerOn
False, then ContourPlot manages the informational
annotation by itself. In this case, the cnInfoLabelZone
resource is not as meaningful.
Default: 3
-
cnInfoLabelSide
-
This resource of type NhlTPosition
determines where to place the informational annotation in relation to
the sides of the plot object. The PlotManager
Location Control Model requires this resource to allow control of
the informational label consistent with other annotations. Its value
determines a coordinate system origin and the direction of the
positional resources, cnInfoLabelParallelPosF and
cnInfoLabelOrthogonalPosF. It also constrains the value of
cnInfoLabelJust appropriately. There are four settings that
behave as follows, unless cnInfoLabelZone is set to one of
the special zones (0 or 1):
Top
- PlotManager locates the informational label
annotation relative to a line paralleling the top viewport boundary.
cnInfoLabelOrthogonalPosF increases in the direction of
increasing NDC Y-Axis values and is constrained to positive values.
cnInfoLabelParallelPosF increases in the direction of
increasing NDC X-Axis values. cnInfoLabelJust is constrained
to
BottomRight, BottomCenter, or
BottomLeft.
Bottom
- PlotManager locates the informational label
annotation relative to a line that parallels the bottom
viewport boundary. cnInfoLabelOrthogonalPosF increases in
the direction of decreasing NDC Y-Axis values and is constrained to
positive values. cnInfoLabelParallelPosF increases in the
direction of increasing NDC X-Axis values. cnInfoLabelJust is
constrained to
TopRight, TopCenter, or
TopLeft.
Right
- PlotManager locates the informational label
annotation relative to a line that parallels the right viewport
boundary. cnInfoLabelOrthogonalPosF increases in the
direction of increasing NDC X-Axis values and is constrained to
positive values. cnInfoLabelParallelPosF increases in the
direction of increasing NDC Y-Axis values. cnInfoLabelJust is
constrained to
TopLeft, CenterLeft, or
BottomLeft.
Left
- PlotManager locates the informational label
annotation relative to a line that parallels the left viewport boundary.
cnInfoLabelOrthogonalPosF increases in the direction of
decreasing NDC X-Axis values and is constrained to positive values.
cnInfoLabelParallelPosF increases in the direction of
increasing NDC Y-Axis values. cnInfoLabelJust is constrained
to
TopRight, CenterRight, or
BottomRight.
If cnInfoLabelZone is set to 0, the
PlotManager locates the informational label
annotation relative to the viewport center. If
cnInfoLabelZone is 1, the direction of the
cnInfoLabelOrthogonalPosF is opposite to the specification
given above. Also if the cnInfoLabelZone is either 0
or 1, cnInfoLabelJust is not constrained, and
cnInfoLabelOrthogonalPosF may take on negative values.
Default: Bottom
-
cnInfoLabelParallelPosF
-
cnInfoLabelParallelPosF specifies the coordinate of the base
location of the informational label annotation
parallel to the current cnInfoLabelSide and directed toward
increasing NDC values. The PlotManager Location
Control Model requires this resource to allow control of the
informational label consistent with other annotations.
Default: 1.0
-
cnInfoLabelOrthogonalPosF
-
cnInfoLabelOrthogonalPosF sets the coordinate of the base
location of the informational label annotation
orthogonal to the current cnInfoLabelSide and directed away
from the center of the viewport. The PlotManager Location
Control Model requires this resource to allow control of the
informational label consistent with other annotations.
Default: 0.02
-
cnInfoLabelJust
-
This resource of type NhlTJustification, after
constraint to an appropriate value based on cnInfoLabelSide,
sets the justification of the informational label annotation
with respect to its base location. The PlotManager Location
Control Model requires this resource to allow control of the
informational label consistent with other annotations.
Default: TopRight
-
cnNoDataLabelOn
-
This boolean resource, when set True, causes a label to appear when
ContourPlot is drawn without any data having been
provided. Except for the label string, all attributes of this label,
including its position, are set using resources belonging to the
constant field label. When set False, no such label appears.
Default: True
-
cnNoDataLabelString
-
This resource contains the string that appears in the 'No Data' label
if you draw a ContourPlot object without providing
any data. No substitution substrings are allowed in this label, since
all the substitutions depend on data being available. Except for the
boolean switch that turns it on and off, all attributes of this label,
including its position, are set using resources belonging to the
constant field label.
Default: "NO CONTOUR DATA"
-
cnConstFLabelOn
-
The ContourPlot object draws a constant field label
annotation only when cnConstFLabelOn is set True and
the ScalarField data are determined to have a single
constant value within the limits of the available precision or when
no ScalarField data are supplied.
Default: True
-
cnConstFLabelString
-
Specifies the string to use when drawing a constant field label. The
string may contain function codes and/or substitution
substrings. ContourPlot will replace the substring
$ZDV$ with a number representing the constant field value.
cnConstFLabelFormat determines the format of the number; its
value will be scaled based on the value of cnLabelScaleFactorF.
Default: "CONSTANT FIELD - VALUE IS $ZDV$"
-
cnConstFLabelFormat
-
The cnConstFLabelFormat resource is a string that specifies the
printing format for the number generated from a substitution substring in
the cnConstFLabelString according to the HLU Floating Point Format Specification scheme.
If any of the numerical format parameters
have the dynamic attribute on, the corresponding parameter in the
cnMaxDataValueFormat resource determines the parameter's value.
The default value uses the shorthand notation '*+' to cause all
numeric format parameters to be determined dynamically.
Default: "*+^sg"
-
cnConstFLabelTextDirection
-
This resource of type NhlTTextDirection specifies
the direction of the text in the constant field label. The choices are:
Down
- Each character is placed below the previous character in the text string.
Across
- Each character is placed to the right of the previous character in
the text string.
These directions apply before rotation due to cnConstFLabelAngleF.
Default: Across
-
-
cnConstFLabelFontHeightF
-
This resource controls the height, in NDC units, of characters used
in the text of the constant field label. The character width scales
proportionally, unless you also modify the aspect ratio using the
cnConstFLabelFontAspectF resource. The constant field label
text height scales with changes to the viewport width, unless you
explicitly set cnConstFLabelFontHeightF during the same call.
Default: <dynamic> -- 0.012 for a viewport width of 0.6
-
cnConstFLabelFont
-
This resource of type NhlTFont
specifies the font used to render the constant field label.
Default: "pwritx"
-
cnConstFLabelFontColor
-
This resource specifies the HLU color index used to render
constant field label text.
Default: True
-
cnConstFLabelFontAspectF
-
This resource determines the shape of the constant field label
characters. Values increasing from 1.0 result in thinner
characters. Values decreasing from 1.0 make the characters
wider. Values less than or equal to 0.0 result in a WARNING message
and a restoration of the default value.
Default: 1.3125
-
cnConstFLabelFontThicknessF
-
Sets the thickness of the line used to draw constant field label
text. The value acts as a multiplier of a (device-dependent) unit
thickness. This resource is ignored when the lbLabelFont
specifies a filled font (font indexes 21-22, 25-26, 29-30, and 33-37).
Default: 1.0
-
cnConstFLabelFontQuality
-
This resource of type NhlTFontQuality
determines the quality of the font used to draw the
ContourPlot constant field label.
Default: High
-
cnConstFLabelConstantSpacingF
-
Normally when cnLineLabelFontQuality is set to
High,
the ContourPlot object writes constant field label text with
proportional spacing. Setting the cnConstFLabelConstantSpacingF
to a value greater than 0.0 overrides this behavior. Instead, the
distance from the start of one character to the next is computed by
multiplying a single standard character width by the value of
cnLineLabelConstantSpacingF. When
cnLineLabelConstantSpacingF has a value between 0.0 and 1.0,
characters will overlap. A value of 1.0 implies, on average, no space
between characters, while values increasing from 1.0 cause the space
between characters to grow. This parameter is ignored when
cnConstFLabelFontQuality is not High. Values less
than 0.0 result in an error and are replaced with the default value.
Default: 0.0
-
cnConstFLabelAngleF
-
This resource specifies the angle, in degrees, of the constant field
label text and its surrounding box.
Default: 0.0
-
cnConstFLabelFuncCode
-
This resource of type NhlTCharacter sets the
function code character that the low level utilities will use when
parsing the constant field label string.
Default: :
-
cnConstFLabelBackgroundColor
-
This resource sets the background color used to fill the box surrounding
the constant field label. If you do not want the box to be filled at all, set
cnConstFLabelBackgroundColor to
Transparent (-1).
Default: Background
-
cnConstFLabelPerimOn
-
cnConstFLabelPerimOn is a boolean resource that determines
whether ContourPlot will draw an outline around the
perimeter of the box surrounding the contour constant field label. If
set False, no outline will be drawn.
Default: True
-
cnConstFLabelPerimSpaceF
-
cnConstFLabelPerimSpaceF determines the spacing or margin
between the text of the constant field label and the edge of the
constant field label box as a fraction of the current label text
height.
Default: 0.33
-
cnConstFLabelPerimColor
-
This resource sets the HLU color index used to draw the perimeter of
the constant field label box.
Default: Foreground
-
cnConstFLabelPerimThicknessF
-
This resource determines the thickness of the perimeter line around
the constant field label box. The value acts as a multiplier of a
(device-dependent) unit thickness.
Default: 1.0
-
cnConstFLabelZone
-
ContourPlot implements the constant field label as an
embedded annotation. cnConstFLabelZone specifies the
PlotManager zone assigned to the constant field
annotation. The PlotManager
Location Control Model requires this resource to allow control of
the constant field label consistent with other annotations. If
cnConstFLabelZone is set to 0, the positional origin is the
center of the plot viewport; otherwise it is on or outside one of the
sides of the viewport.
If you create a ContourPlot object without an
active PlotManager by setting tfPlotManagerOn
False, then ContourPlot manages the constant field
annotation by itself. In this case, the cnConstFLabelZone
resource is not as meaningful.
Default: 0
-
cnConstFLabelSide
-
This resource of type NhlTPosition
determines where to place the constant field
annotation in relation to the sides of the plot
object. The PlotManager Location
Control Model requires this resource to allow control of the
constant field label consistent with other annotations. Its value
determines a coordinate system origin and the direction of the
positional resources, cnConstFLabelParallelPosF and
cnConstFLabelOrthogonalPosF. It also constrains the value of
the cnConstFLabelJust appropriately. There are four settings,
which behave as follows, unless cnConstFLabelZone is set to
one of the special zones (0 or 1):
Top
- PlotManager locates the constant field label
annotation relative to a line that parallels the top viewport boundary.
cnConstFLabelOrthogonalPosF increases in the direction of
increasing NDC Y-Axis values and is constrained to positive values.
cnConstFLabelParallelPosF increases in the direction of
increasing NDC X-Axis values. cnConstFLabelJust is
constrained to
BottomRight, BottomCenter, or
BottomLeft.
Bottom
- PlotManager locates the constant field label
annotation relative to a line that parallels the bottom viewport
boundary. cnConstFLabelOrthogonalPosF increases in the
direction of decreasing NDC Y-Axis values and is constrained to
positive values. cnConstFLabelParallelPosF increases in the
direction of increasing NDC X-Axis values. cnConstFLabelJust
is constrained to
TopRight, TopCenter, or
TopLeft.
Right
- PlotManager locates the constant field label
annotation relative to a line that parallels the right viewport
boundary. cnConstFLabelOrthogonalPosF increases in the
direction of increasing NDC X-Axis values and is constrained to
positive values. cnConstFLabelParallelPosF increases in the
direction of increasing NDC Y-Axis values. cnConstFLabelJust
is constrained to
TopLeft, CenterLeft, or
BottomLeft.
Left
- PlotManager locates the constant field label
annotation relative to a line that parallels the left viewport boundary.
cnConstFLabelOrthogonalPosF increases in the direction of
decreasing NDC X-Axis values and is constrained to positive values.
cnConstFLabelParallelPosF increases in the direction of
increasing NDC Y-Axis values. cnConstFLabelJust is
constrained to
TopRight, CenterRight, or
BottomRight.
If cnConstFLabelZone is set to 0, the
PlotManager locates the constant field label
annotation relative to the viewport center. If
cnConstFLabelZone is 1, the direction of the
cnConstFLabelOrthogonalPosF is opposite to the specification
given above. Also if the cnConstFLabelZone is either
0 or 1, cnConstFLabelJust is not constrained, and
cnConstFLabelOrthogonalPosF may take on negative values.
Default: Bottom
-
cnConstFLabelParallelPosF
-
cnConstFLabelParallelPosF specifies the coordinate of the
base location of the constant field label annotation
parallel to the current cnConstFLabelSide and directed
toward increasing NDC values. The PlotManager Location
Control Model requires this resource to allow control of the
constant field label consistent with other annotations.
Default: 0.0
-
cnConstFLabelOrthogonalPosF
-
cnConstFLabelOrthogonalPosF sets the coordinate of the base
location of the constant field label annotation
orthogonal to the current cnConstFLabelSide and directed away
from the center of the viewport. The PlotManager Location
Control Model requires this resource to allow control of the
constant field label consistent with other annotations.
Default: 0.0
-
cnConstFLabelJust
-
This resource of type NhlTJustification, after
constraint to an appropriate value based on
cnConstFLabelSide, sets the justification of the constant
field label annotation with respect to its base location. The
PlotManager Location
Control Model requires this resource to allow control of the
constant field label consistent with other annotations.
Default: CenterCenter
-
cnMissingValPerimOn
-
If set True, this boolean resource specifies that perimeter lines be drawn
around missing value areas in the ContourPlot object.
Default: False
-
cnMissingValPerimThicknessF
-
This resource determines the thickness of perimeter lines around
missing value areas. The value acts as a multiplier of a
(device-dependent) unit thickness.
Default: 1.0
-
cnMissingValPerimDashPattern
-
This resource sets the HLU index of a dash pattern used to render
perimeter lines around missing value areas.
Default: 0
-
cnMissingValPerimColor
-
This resource sets the HLU index of the color used to render perimeter
lines around missing value areas.
Default: Foreground
-
cnMissingValFillColor
-
This resource sets the HLU index of the color used to fill missing
value areas. If cnMissingValFillColor has the value
Transparent (-1), there will be no fill of the missing
value area, regardless of the setting of
cnMissingValFillPattern.
Default: Background
-
cnMissingValFillPattern
-
This resource sets the HLU index of the fill pattern used to fill missing
value areas. If cnMissingValFillPattern has the value
HollowFill (-1), there will be no fill of the missing
value area, regardless of the setting of
cnMissingValFillColor.
Default: HollowFill
-
cnMissingValFillScaleF
-
The cnMissingValFillScaleF resource controls the scaling of the
pattern used for missing values fill areas. It has no effect for
solid fill (fill pattern index
Solid or 0). Values greater than 1.0
make the pattern spacing bigger than the default spacing, resulting in
a fill that appears less dense. Values less than 1.0 have the opposite
effect. Values less than or equal to 0.0 are invalid, generate a warning
message, and are reset to the default value, 1.0.
Default: 1.0
-
cnGridBoundPerimOn
-
If set True, this boolean resource specifies that a perimeter line be
drawn around the grid boundary (extent of the
ScalarField data) in the ContourPlot
plot.
Default: False
-
cnGridBoundPerimThicknessF
-
This resource determines the thickness of the perimeter line around
the grid boundary. The value acts as a multiplier of a
(device-dependent) unit thickness.
Default: 1.0
-
cnGridBoundPerimDashPattern
-
This resource sets the HLU index of a dash pattern used to render
the perimeter line around the grid boundary.
Default: 0
-
cnGridBoundPerimColor
-
This resource sets the HLU index of the color used to render the perimeter
line around the grid boundary.
Default: Foreground
-
cnOutOfRangePerimOn
-
If set True, this boolean resource specifies that perimeter lines be
drawn around areas where the ScalarField data falls
outside the current data boundaries of the plot.
Default: False
-
cnOutOfRangePerimThicknessF
-
This resource determines the thickness of perimeter lines around
the edge of out-of-range areas. The value acts as a multiplier of a
(device-dependent) unit thickness.
Default: 1.0
-
cnOutOfRangePerimDashPattern
-
This resource sets the HLU index of a dash pattern used to render
perimeter lines around the edge of out-of-range areas.
Default: 0
-
cnOutOfRangePerimColor
-
This resource sets the HLU index of the color used to render perimeter
lines around the edge of out-of-range areas.
Default: Foreground
-
cnSmoothingOn
-
When the boolean resource cnSmoothingOn is True, the
ContourPlot object will smooth the contours using cubic
splines under tension. The resources cnSmoothingTensionF and
cnSmoothingDistanceF control the parameters of the smoothing
algorithm. Note that when smoothing is turned on, it is possible in some
cases for adjacent contour lines to cross each other. In this case, you
need to adjust the cnSmoothingTensionF experimentally in order
to eliminate the problem.
Default: False
-
cnSmoothingTensionF
-
If you give cnSmoothingTensionF a value of 0.0, smoothing is
turned off. If you give it a negative value, the
ContourPlot object performs smoothing prior to any
transformations of the data space; if you make it positive, smoothing
takes place after any data space transformations. Small absolute
values on the order of 0.001 give 'loopy' curves, which are rather
likely to cross each other. Large absolute values give tight, nearly
polygonal curves.
Note that if cnMaxPointDistanceF is set to a non-zero value,
smoothing will not work properly unless it is applied prior to the
transformation of the data space. Therefore you should always set
cnSmoothingTensionF to a negative value when
cnMaxPointDistanceF is non-zero.
V4.1 Status Note 4
Default: -2.5
-
cnSmoothingDistanceF
-
cnSmoothingDistanceF sets the distance between points used to
draw smoothed contour lines. It is expressed as a fraction of the
width of the window in the coordinate system in which smoothing is
being performed. Note that processing time is affected greatly by the
value given to the smoothing distance. Smaller values add to the processing
time.
Default: 0.01
-
cnMaxPointDistanceF
-
Controls the maximum distance along both the width and height of the
viewport allowed before checking for a discontinuous
jump in the mapped coordinate points. The value specifies a fraction
of the view width for the width check and a fraction of the view
height for the height check. A value of 0.0 for this resource turns
off this form of checking altogether. When non-zero, this value should
not be set less than 0.001 or greater than 0.1. Smaller values
increase processing time.
Note that if cnMaxPointDistanceF is set to a non-zero value,
contour smoothing will not work properly unless it is applied prior to
the transformation of the data space. Therefore you should always set
cnSmoothingTensionF to a negative value when
cnMaxPointDistanceF is non-zero.
Default: 0.05
-
cnExplicitLabelBarLabelsOn
-
This boolean resource allows you control the labels that appear in the
ContourPlot LabelBar
explicitly. When set True, ContourPlot does not block
the LabelBar resources lbLabelStrings and
lbLabelAlignment. Therefore you can directly control both the
contents of the LabelBar's label strings and their
alignment with respect to the label boxes. When
cnExplicitLabelBarLabelsOn is set False,
ContourPlot sets both of these resources based on the
current contour line labels and the value of the resource
cnLabelBarEndLabelsOn. If you set this resource True
but do not set the lbLabelStrings array resource,
ContourPlot will set it for you one time. This allows
you to get an initial set of strings as a starting point for any
customized tweaking you want to perform.
Default: False
-
cnLabelBarEndLabelsOn
-
When this boolean resource is set True and
cnExplicitLabelBarLabelsOn is False,
ContourPlot creates labels for the two ends of the
LabelBar. The label at one end will be a string
representation of the minimum value in the dataset, and at the other
end will be a string representation of the maximum value in the dataset.
Both strings will be formatted according to the format specification
in effect for the other labels provided by ContourPlot
to the LabelBar.
Default: False
-
cnExplicitLegendLabelsOn
-
This boolean resource allows you control the labels that appear in the
ContourPlot Legend explicitly. When
set True, ContourPlot does not block the
Legend resource lgLabelStrings. Therefore
you can directly control the content of the Legend's
label strings. When cnExplicitLegendLabelsOn is set False,
ContourPlot sets lgLabelStrings based on the
value of the current contour line labels. If you set this resource
True but do not set the lbLabelStrings array resource,
ContourPlot will set it for you one time. This allows
you to get an initial set of strings as a starting point for any
customized tweaking you want to perform.
Default: False
-
cnLegendLevelFlags
-
This array resource of type NhlTcnLevelUseModeGenArray
allows you to control which of the lines representing contour levels
are to appear in the ContourPlot
Legend. You can also control whether the lines that
do appear are to get a line label. Although the type allows for four
choices, this resource supports only three of them:
NoLine
- Do not draw a line representing this contour level in the
Legend.
LineOnly
- Draw a line representing this contour level, but no label in the
Legend.
LabelOnly
- Currently, if an element is set to this value, it is treated the
same as if it were set to
NoLine.
LineAndLabel
- Draw a line representing this contour level along with a line
label in the Legend.
If you set this resource with an array containing fewer elements than
the current number of contour levels, additional elements are supplied
and set to the value NoLine.
Default: NULL
-
cnConpackParams
-
This string array resource allows you limited access to a number of
parameters belonging to the LLU Conpack package, in
order to control certain plot features for which
ContourPlot does not yet have native resources. Each
element of the array is a string consisting of a Conpack parameter
name and its desired value separated by the colon character. Here is
an example of its use in a resource file:
*cnConpackParams: (/ RC1:0.05 , RC2:0.1 , RC3:0.05 , \
PC1:7.0 , PC2:20.0 , PC3:120.0 , PC4:0.01 , PC5:0.05 , PC6:0.05 , \
PW1:0.0 , PW2:0.0 , PW3:0.0 , PW4:0.0 /)
If set programmatically, each string element would need to quoted as
appropriate for the source language. The example given above includes
all the parameters that affect the density of line labels when the cnLineLabelPlacementMode
is set to Randomized or Computed. The example values
should normally result in the appearance of more labels than the
default settings. See the Conpack parameter descriptions for more information.
Note that the only Conpack parameters accessible
using the cnConpackParams resource are ones that
ContourPlot does not set internally and are unlikely
to have an interaction with parameters that
ContourPlot does set. Here is a categorized list of
the Conpack parameters that can be set using
cnConpackParams:
Contour hachuring control
High/low label density
Computed placement mode ("Penalty scheme" in Conpack)
label density
- PC1
- PC2
- PC3
- PC4
- PC5
- PC6
- PW1
- PW2
- PW3
- PW4
Randomized placement mode ("Regular scheme" in Conpack)
label density
Point interpolation for lines and edges
Note that you cannot get the value of cnConpackParams. Attempts
to do so will result in an error.
Default: NULL
