Subtract two geometric mapping grids and create a plot file of the differences
Subtracts two geometric mapping grids and creates a plot file of the differences.
- INGRID
- Input grid files. The input geometric mapping grid files. The denser of the two is found and the other is subtracted from it. The output size (number of output image lines and samples) of both grids must match; however, the number of rows and columns in each may differ.
- OUTFILE
- Output file. The output plot file of grid differences.
- NL
- Number of lines. The number of lines in the input space image.
- NS
- Number of samples. The number of samples in the input space image.
- PRINT(TERM)
- Output destination. The output destination of the grid residuals report. The available output destinations are:
= --: No Report = TERM: Terminal. Output is sent to the user's terminal. = LP: Line printer. Output is sent to the printer defined by $PRINTER. = Filename: User-supplied filename. Output is sent to the user-supplied file with the extension "prt".
The denser of "frist;grid" and "second;grid" is found and the other is subtracted from it. Residuals are calculated and are written to the "grid.plot;plot" file. A summary of the errors is printed to the user's terminal.
Parameters are received from TAE and all files are opened. Both geometric mapping grid files are read. GRIDSUB then determines which grid is denser (has more rows and columns) and subtracts the other from it. Residuals for each grid intersection are calculated and written to the plot file. A summary of the residuals and other statistics are reported to the user.
The error message displayed immediately preceding this message is the specific error that was encountered. Processing continues.
The error message displayed immediately preceding this message is the specific error that was encountered. Processing is terminated.
The number of lines and samples in the output space must be identical before grids can be subtracted.
An error occurred while attempting to open the plot file. Check the file name and directory protections.
An error occurred while attempting to open the print file. Check the file name and directory protections.