Looking at SNAP Output with CUPLOT

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Looking at SNAP Output with CUPLOT

CUPLOT can be used to plot SNAP data, for example:

      $ CUPLOT DI S sh 35782_72 de te_ts ; go

plots the Thomson scattering T_e(R) array before it was processed by SNAP for shot 35782 try 72.

The command DI S indicates that input is to be read from the SNAP archives.
The command SH NNNNN_ttt specifies the snap-try number, e.g., SH 35782_72 for snap-try 72 on shot 35782.
The command DE TE_TS ; specifies the name of one element to plot. Most SNAP elements know the proper x-axis to plot against; you shouldn't have to look up the appropriate R_major array for the various T_e(R) arrays for example.

Three CUPLOT command procedures have been written to display a standard set of SNAP plots. The information that describes the page layouts for each of these commands is in a command file.

The command PSS plots SNAP scaler pages--the summary page, a comments page, the confinement page, and the energy page. The format for these is similar to the format in the SNAP plot files, but is more condensed.
```
           Command[]? PSS
           SNAP scaler command file[USR:[UTIL]PSS_PAGES.SNP]? ,
```
The command PSP plots SNAP plot pages.
```
           Command[]? PSP
           SNAP plot command file[USR:[UTIL]PSP_PLOTS.SNP]? ,
```
All units are mks. If you would like to make your own version of the command file, copy the default file into your area and modify it to suit your needs. Or if you would like the default file changed, contact Steve Scott.

The command PST plots selected waveforms vs time with the SNAP time marked on the graphs.

           Command[]? PST
           SNAP plot command file[USR:[UTIL]PST_PLOTS.SNP]? ,

To execute all of these commands with the standard command files for any shot-try, use SNAPSUM shot try printer, e.g., $ SNAPSUM 35782 72 hl0.

The type title command will list the available SNAP array names (both versus minor and major radius). You can restrict the search to those names beginning with a specified string of characters, for example:

           CUPLOT[]? TT S TI

prints out all of the SNAP variable names beginning with TI (it is case-insensitive). If you use SA instead of S, you will restrict the list to variables vs minor radius; if you use SR, you will restrict the list to variables vs major radius. The list below is an abbreviated version of the response to the TT command.

1066 TIR_USED         Rmajor for used Ti(R)
1402 TIR_USED_RAW     Raw Rmajor for used Ti(R)
1065 TI_USED          Ti(R) input used by SNAP
1070 TI_USED_ERR      Error bars for Ti(R) profile used in SNAP
1403 TI_USED_ERR_RAW  Error bars for raw Ti(R) profile used in SNAP
1049 TI_USED_MAP      Ti(R) used, mapped to flux surfaces
1401 TI_USED_RAW      Raw Ti(R) input used by SNAP
1067 TI_USED_SM       smoothed Ti(R) profile used by SNAP
2010 TI_1             Ti_1 (1st ion species)
2011 TI_2             Ti_2 (2nd ion species)
2012 TI_3             Ti_3 (3rd ion species)
2013 TI_4             Ti_4 (4th ion species)
2014 TI_5             Ti_5 (5th ion species)

The left-hand column represents the internal channel number in the SNAP archives corresponding to the variable name; it is not necessary to know this number, but you can use it to determine what sort of array the variable represents.

The 2000-series elements are arrays on SNAP's internal minor radius grid.
The 1000-series elements generally represent profiles versus major radius.
More generally, the 1000-series includes all profile arrays input through the SNAP.DAT file from SNAPIN. A few of these profiles, such as radiated power, were determined from an Abel inversion external to SNAP and so they are defined on their own minor radius grid. (This data is later mapped to SNAP's own minor radius grid. The mapped data is stored as a 2000-series variable under a separate name.)

Next: SNAPSUM Up: SNAP Utilities Previous: SNAP Utilities

Marilee Thompson
Fri Jul 11 15:18:44 EDT 1997