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.  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 the
  arcs/polygons are drawn and filled using the fg parm value. If the
  nofill keyword is provided, then the objects are only drawn, not
  filled.

  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.
  2019-07-10 WLB - IDS-7965: added nofill keyword.
  2019-07-18 WLB - IDS-7923: replaced sprintf with snprintf.

PARAMETERS: