v.to.rast <main>      GRASS Reference Manual	 <main> v.to.rast



NAME
     v.to.rast - Converts a binary GRASS vector map layer into a
     GRASS raster map layer.
     (GRASS Vector Program)

SYNOPSIS
     v.to.rast
     v.to.rast help
     v.to.rast input=name output=name

DESCRIPTION
     v.to.rast transforms (binary) GRASS vector map layers into
     GRASS raster map layer format.  Most GRASS analysis programs
     operate on raster data.


     Parameters:

     input=name	       Name of the binary vector map layer to be
		       converted.

     output=name       Name to be assigned to the raster map
		       layer output.

     The user can run the program non-interactively by specifying
     the names of a vector input file and raster output file on
     the command line, using the form:

	  v.to.rast input=name output=name

     If the user instead types simply v.to.rast on the command
     line, the program will prompt the user to enter these names.

NOTES
     v.to.rast will only affect data in areas lying inside the
     boundaries of the current geographic region.  Before running
     v.to.rast, the user should therefore ensure that the current
     geographic region is correctly set and that the region
     resolution is at the desired level; the program may
     otherwise create an empty raster map layer.  An empty raster
     map layer will also be created if the vector map layer has
     not been assigned category/attribute labels (e.g., through
     use of the v.digit program).

     The v.to.rast program creates two files:  a raster map
     layer, and a history file.	 The GRASS program r.support must
     be run to create additional support files for the raster
     map.

     Additional problems sometimes lead to the creation of empty
     raster map layers.	 Unfortunately, error messages explaining
     these phenomena do not yet exist.



GRASS 5.0beta6	      GRASS Development Team			1






v.to.rast <main>      GRASS Reference Manual	 <main> v.to.rast



SEE ALSO
     g.region, r.support, v.digit, v.import, v.support

AUTHORS
     Michael Shapiro,  U.S. Army Construction Engineering
     Research Laboratory

















































2		      GRASS Development Team	   GRASS 5.0beta6