overlay

Used to overlay one HLU plot object over a specific style of transformation.

Synopsis

	procedure overlay (
		base[1] : graphic,
		plot[1] : graphic
	)

Arguments

base

The bottom element of the overlay chain of plots. The object referenced must support overlays.

plot

Graphical object to be added to the top of the overlay.

Description

Overlay is used to set a plot so it will be drawn over one or more other plots. When a plot is added to an overlay, the new plot will be drawn on top of all of the plots currently in the overlay list. overlay calls the HLU function NhlAddOverlay.

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$Revision: 1.9 $ $Date: 1998/06/15 21:30:21 $