psdriver(1grass) [debian man page]
psdriver(1grass) Grass User's Manual psdriver(1grass) NAME
PS driver - driver to create PostScript files. (drivers) DESCRIPTION
The PS driver generates a PostScript file from GRASS display commands. The driver is started as 'pseudo' monitor (PS file instead) and when stopped, all output from previously used display commands are written to the PostScript file. USAGE
Environment variables Several environment variables effect the operation of the PS driver: GRASS_PSFILE name of output file. If it ends with ".eps" an EPS file will be created. GRASS_PAPER sets the screen dimensions and margins to fit a standard paper size, see also GRASS_WIDTH, GRASS_HEIGHT. GRASS_WIDTH defines the width of the screen, see also GRASS_HEIGHT GRASS_HEIGHT defines the height of the screen, see also GRASS_WIDTH GRASS_TRUECOLOR if TRUE, the PS driver generates color output, otherwise monochrome. GRASS_LANDSCAPE if TRUE, the screen is rotated 90 degrees counter-clockwise so that a "landscape" screen fits better on "portrait" paper. GRASS_PS_HEADER if FALSE, the output is appended to any existing file, and no prolog or setup sections are generated. GRASS_PS_TRAILER if FALSE, no trailer section is generated. Example Start up the driver d.mon start=PS Display raster map and vector polygons d.rast somerastermap d.vect map=somevectormap color=red Stop the driver subsequently. This will write a file named map.ps to be created in your current directory: d.mon stop=PS NOTES
The resolution of the PS raster map is defined by the map extents. Use g.region -p to get the number of rows and cols and use the environ- ment variables to set the PS size. If you would like a larger image, multiply both rows and cols by the same whole number to preserve the aspect ratio. GRASS_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). Only masked images (d.rast -o, d.rgb -o, d.his -n) require PostScript level 3. SEE ALSO
Display drivers HTMLMAP driver, PNG driver, XDRIVER d.frame, d.out.file, d.mon, d.rast, d.vect AUTHOR
Glynn Clements, 2007 Last changed: $Date: 2008-03-23 15:34:53 +0100 (Sun, 23 Mar 2008) $ Full index (C) 2003-2011 GRASS Development Team GRASS 6.4.2 psdriver(1grass)
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raster3dintro(1grass) Grass User's Manual raster3dintro(1grass) 3D Raster data (voxel) in GRASS GIS 3D Raster (voxel) import The module r3.in.ascii supports generic x,y,z import. Alternatively, voxels can be generated from 3D point vector data (v.to.rast3). Always the full map is imported. Volumes can also be created based on 2D elevation map(s) and value raster map(s) (r.to.rast3elev). Alter- natively, a volume can be composed of several 2D raster map slices which are merged into one 3D raster volume map (r.to.rast3). Voxel region settings and 3D MASK GRASS 3D raster map processing is always performed in the current 3D region settings (see g.region, -p3 flags), i.e. the current region extent, vertical extent and current 3D resolution are used. If the 3D resolution differs from that of the input raster map(s), on-the-fly resampling is performed (nearest neighbor resampling). If this is not desired, the input map(s) has/have to be reinterpolated beforehand with one of the dedicated modules. Masks can be set (r3.mask). Voxel operations Powerful 3D map algebra is implemented in r3.mapcalc. Voxel conversion to vector or 2D raster maps 3D vector point data can be converted to a GRASS 3D raster map (v.to.rast3). Layers from a 3D raster map can be converted to a 2D raster map (r3.to.rast). Cross sectional 2D raster map can be extracted from 3D raster map based on a 2D elevation map (r3.cross.rast). Voxel statistics Volume statistics can be calculated with r3.stats and r3.univar. Voxel interpolation From 3D vector points, GRASS 3D raster maps can be interpolated (v.vol.rst). Results are volumes, or 2D raster maps can be also extracted. Voxel export GRASS 3D raster maps can be exported to VTK (r3.out.vtk). VTK files can be visualized with the VTK Toolkit, Paraview and MayaVi. GRASS 2D raster maps can be exported to VTK with r.out.vtk, GRASS vector maps can be exported to VTK with v.out.vtk. Alternatively, GRASS 3D raster maps can be imported and exported from/to Vis5D (r3.out.v5d). Note that Vis5D is limited in the number of supported voxels. Finally, export to 3D ASCII is also available (r3.out.ascii). See also Introduction to GRASS raster map processing full index (C) 2008-2011 GRASS Development Team GRASS 6.4.2 raster3dintro(1grass)