psdriver -

PostScript DISPLAY DRIVER  DESCRIPTION  USAGE  Environment variables  Example  NOTES  SEE ALSO  AUTHOR  SOURCE CODE 

---

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

SOURCE CODE

Available at: PostScript DISPLAY DRIVER source code (history)

Accessed: Thursday Nov 06 11:28:33 2025

Main index | Topics index | Keywords index | Graphical index | Full index

© 2003−2025 GRASS Development Team, GRASS GIS 8.4.1 Reference Manual

---