Help for SHP2RAST

PURPOSE

     SHP2RAST

TAE COMMAND LINE FORMAT

     shp2rast INP=(A) OUT=(B) PARMS
     
     where

     A		is a an input Esri Shape format file
     B		is a prefix used to generate output VICAR image file names

                suffix is an optional filename suffix
                minLat, maxLat, minLon, maxLon limit cell file generation
		fg, bg specify polygon fill and background values
                pixperdeg sets the rasterization resolution

OPERATION

  The input file must be in Esri Shapefile format, including only
  SHPT_ARC and SHPT_POLYGON types, which are both treated as polygons.
  The input file shape vector points are assumed to have x, y values
  respectively in the ranges -180 to 180 and -90 to 90. The world
  extent is divided into 1x1 degree cells. Each cell that is within
  the AOI specified by the min/max Lon/Lat parms and has shape data
  will be rasterized and have a square VICAR image generated, with the
  NL, NS = the pixperdeg parm. The 1x1 degree cell is filled with the
  bg parm value. Then polygons are filled using the fg parm value.

  The output files are named with the lon/lat of their lower left
  corners and any output name and suffix provided respectively as OUT
  and SUFFIX parms:

     preYyyXxxxsuf

  where pre is the OUT parm, suf is the SUFFIX parm, Y is either n or
  s, yy is a zero-filled latitude, X is either w or e, xxx is a
  zero-filled longitude. OUT defaults to "mask_". SUFFIX defaults to
  ".img". Use the margin keyword to add a one-pixel margin on the bottom
  and right edges, for tiling overlap, as is done with DTED.
   
WRITTEN BY:            W. L. Bunch Thu Feb  5 2004

COGNIZANT PROGRAMMER:  W. L. Bunch

REVISIONS: 
  2008-01-03 WLB - Switched to USES_ANSI_C AND LIB_CARTO; misc cleanup.
  2017-06-30 WLB - Added NL, NS, margin parms; migrated to MIPL.
  2018-12-04 WLB - Fixed north pole bug.

PARAMETERS: