Help for POLYMAP

PURPOSE

     POLYMAP  is used to convert point or polygon files from 
     one  map  projection  to  another.    The  file  to  be 
     converted  must  be  in the  standard  VICAR  polygonal 
     format (sequence of points X1,Y1,X2,Y2,...  in fullword 
     floating).   Several map projections are supported (see
     parameters).

TAE COMMAND LINE FORMAT

     POLYMAP INP=A OUT=B PARAMS

     where

     INP                 is  an input point on polygon  file 
                         in  the  standard  VICAR  polygonal 
                         format.
     
     OUT                 is the output file in the  standard 
                         IBIS format.

     PARAMS              is a standard VICAR parameter field.
OPERATION

     POLYMAP  performs  the map transformation indicated  by 
     the  keyword  to transform an input x,y  pair  into  an 
     output  x,y  pair.    It  is  expected  that  more  map 
     transformations will be added when needed.

WRITTEN BY:              A. L. Zobrist
COGNIZANT PROGRAMMER:    K. F. Evans
REVISION:                3                12OCT81

REVISION SUMMARY
REVISION                 2                12OCT81 
     Addition of new parameter keywords ALBE, LANDSAT, ALB2, 
     INCON, OUTCON.

REVISION                 3                13JUL84
     Addition of spheroid models, parameter SPHEROID.
     Addition   of   Space  Oblique   Mercator   Projection, 
     PROJECTION=SOM.