Help for SNYDER

PURPOSE:
To make images of the centric coordinates resulting from original auxiliary
coordinates.
Part of a package of programs including TRICOEF and MAPAUX to map project
irregularly shaped objects.

EXECUTION:
snyder out=(lat,lon,dlat,dlon)

where:

lat and lon are maps in rectangular projections the same size and format as
the input images. These images contain the planetocentric lat and lon
respectively which map to the conformal or authalic lat and lon of their pixel
coordinates. ie: the contents are the centric coordinates of the auxiliary
arguments.

dlat and dlon are images of the displacement of the computed centric 
coordinates from their initial auxiliary values.


METHOD:

The following steps are executed for every output pixel:
The auxiliary coordinates are computed from the image location.
Triaxtran computes the centric locations.

HISTORY:
9-1-98  J Lorre. 
COGNIZANT PROGRAMMER:  Jean Lorre