Snap Shots

This option (Field 14) produces snap shots of the field in the form of contours vs range and depth.

 *********************************************************************
 *                          PULSE SNAP SHOTS                         *
 *********************************************************************
 *  1. Plot title:     TEMME-MULLER. Auto f.                         *
 *  2. Range left:            0.000 km                               *
 *  3. Range right:           0.600 km                               *
 *  4. Range tick inc:        0.100 km                               *
 *  5. R-axis length:        20.000 cm                               *
 *  6. Depth down:          600.000 m                                *
 *  7. Depth up:              0.000 m                                *
 *  8. Depth tick inc:      100.000 m                                *
 *  9. D-axis length:        12.000 cm                               *
 * 10. Time,frst frame:       0.000 s                                *
 * 11. Time,last frame:       0.000 s                                *
 * 12. Number of frames       0     (     1 -   99 )                 *
 * 13. Max. level:          -99.000                                  *
 * 14. Norm. exp.:          -99     (   -99 -   99 )                 *
 * 15. No. contours:          0     (     1 -   21 )                 *
 * 16. Undef. file:                                                  *
 * 17. Shade file:                                                   *
 * 18. Parameter:             V     ( V H )                          *
 * 19. Range scaling?         N     ( Y/N )                          *
 * 20. Generate plot:                                                *
 * 21. return:                      ( PP main menu )                 *
 *********************************************************************


     SELECT OPTION:

The menu should be self explanatory for users familiar with SAFARI, with only the following being particular to PP:

Field 10

specifies the time in seconds of the first snapshot produced. This will also be the trace used for the automatic scaling invoked by fields 13 and 14.

Field 11

specifies the time in seconds of the last snapshot.

Field 12

specifies the number of snapshots produced equidistantly for the selected time interval.

Field 13

Is used to set the maximum level for the contours. The interval will be equidistantly covered by the number of contours specified in Field 13.

Field 14

Here the logarithm of the scaling factor is specified. If -99 is specified the exponent will be selected automatically based on the snap-shot data. Usually the first snap-shot is made with automatic scaling, whereas the rest are produced with the so determined exponent. The automatic scaling will also suggest a value of in Field 11, which may of course be changed by the user if desired.

Field 15

Number of contour levels applied for snapshots. For UNIRAS colour plots this number should not be more that 12. UNIRAS is selected by specifying the contour options UNI,X11,COL in Field 8 of the main menu (X11 selects X-windows as device).

Field 16

Name of a file containing a binary map of undefined points.

Field 17

Name of file containing the coordinates of an optional shaded polygon superimposed to the snap-shot. Used for shading bottom or objects. The file format is the standard shading specification used in the cdr files providing plot parameters to cplot.

Field 18

represents the parameter to be plotted, consistent with the options specified in the OASP data file, i.e. with N representing the normal stress or negative pressure in fluids, V the vertical particle velocity and H the horizontal particle velocity etc.

Field 19

a 'Y' here applies a linear scaling of the snapshots with horizontal range, similar to the range scaling in the range-stacked plots. This is useful for animations of near-field problems with significant geometric spreading.

Field 20

produces the contour plots with the specified parameters.

Field 21

Returns to main menu for change of e.g. source data, plot format etc.