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PostScript DISPLAY DRIVER

       PS display driver to create PostScript files.

DESCRIPTION

       The PS driver generates a PostScript file from GRASS display commands.

USAGE

   Environment variables
       The PS driver can be enabled by setting GRASS_RENDER_IMMEDIATE variable, eg.
       export GRASS_RENDER_IMMEDIATE=ps
       Several environment variables affect the operation of the PS driver:

           ·   GRASS_RENDER_WIDTH=xxx
               the width of the image map (default is 640).

           ·   GRASS_RENDER_HEIGHT=yyy
               the height of the image map (default is 480).

           ·   GRASS_RENDER_TRUECOLOR=[TRUE|FALSE]
               sets true-color support. Default is FALSE.

           ·   GRASS_RENDER_FILE
               name of output file. If it ends with ".eps" an EPS file will be created.

           ·   GRASS_RENDER_PS_PAPER
               sets  the  screen  dimensions  and  margins to fit a standard paper size, see also
               GRASS_RENDER_WIDTH, GRASS_RENDER_HEIGHT.

           ·   GRASS_RENDER_PS_LANDSCAPE
               if TRUE, the screen is rotated 90 degrees counter-clockwise so that a  "landscape"
               screen fits better on "portrait" paper.

           ·   GRASS_RENDER_PS_HEADER
               if  FALSE,  the  output  is  appended to any existing file, and no prolog or setup
               sections are generated.

           ·   GRASS_RENDER_PS_TRAILER
               if FALSE, no trailer section is generated.

   Example
       export GRASS_RENDER_IMMEDIATE=ps
       export GRASS_RENDER_TRUECOLOR=TRUE
       g.region raster=elevation
       d.rast elevation
       d.vect roadsmajor color=red
       This writes a file named map.ps in your current directory.

NOTES

       The resolution of the output files is defined by current region extents. Use  g.region  -p
       to  get  the  number  of  rows and cols and use the environment variables to set the image
       size. If you would like a larger image, multiply both rows and  cols  by  the  same  whole
       number to preserve the aspect ratio.

       GRASS_RENDER_TRUECOLOR  requires  either PostScript level 2 or level 1 plus the colorimage
       and setrgbcolor operators (this is the case for colour printers  which  pre-date  level  2
       PostScript).

       Masked images (d.rast, d.rgb, d.his -n) require PostScript level 3.

SEE ALSO

        Cairo driver, PNG driver, HTML driver, variables
       d.rast, d.vect, d.mon, d.erase, d.redraw

AUTHOR

       Glynn Clements, 2007

       Last changed: $Date: 2014-12-19 22:17:36 +0100 (Fri, 19 Dec 2014) $

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