User's Guide

DSPGRID

Displays grid and transformation information in a grid file

Function:

Displays a geometric mapping grid file. It provides the options of printing the file on the line printer, on the user's terminal, or to a text file. Polynomial coefficients, statistical measures of the model fit and gridding of the model, and projection-related information are also reported.

Parameters:

INGRID

Input grid file. The input geometric mapping grid file to be printed.

PRINT(TERM)

Output destination. The output destination of the geometric mapping grid and related information display. The available output destinations are:

  = TERM:      Terminal  
  = LP:        Line printer  
  = Filename:  User-supplied filename

Examples:

1. LAS> dspgrid ingrid=testgrid print=term

   The contents of the geometric mapping grid TESTGRID are displayed on the terminal.

2. LAS> dspgrid ingrid=grid.out print=(term,lp)

   The contents of the geometric mapping grid file GRID.OUT are displayed on the terminal and printed on a printer.

Description/Algorithm:

The input and output image line and sample coordinates contained in the geometric mapping grid file along with the transformation coefficients, model fit and gridding error estimations, and output image projection-related information are displayed on the terminal and, optionally, are printed on a printer or written to a text file.

Nonfatal Error Messages:

None.

Fatal Error Message:

1. [dspgrid-fatal] Fatal error encountered

   The error message that is displayed immediately preceding this message is the specific error that was encountered. Processing is terminated.

User notes

1. Mapping grid files may be produced by functions such as ROTRNSCL, REMAP, EDITGRID, GRIDGEN and POLYFIT.

2. This version of DSPGRID does not support the plotting of geometric mapping grids. It is planned that this capability will be added later.