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GRASS GIS 6.4.6svn Reference Manual

Geographic Resources Analysis Support System, commonly referred to as GRASS, is a Geographic Information System (GIS) used for geospatial data management and analysis, image processing, graphics/maps production, spatial modeling, and visualization. GRASS is currently used in academic and commercial settings around the world, as well as by many governmental agencies and environmental consulting companies.

This reference manual details the use of modules distributed with Geographic Resources Analysis Support System (GRASS), an open source (GNU GPL'ed), image processing and geographic information system (GIS).

Go to raster3D introduction

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raster3D commands:
r3.cross.rast Creates cross section 2D raster map from 3D raster map based on 2D elevation map.
r3.gwflow Calculates numerically transient, confined groundwater flow in three dimensions.
r3.in.ascii Converts a 3D ASCII raster text file into a (binary) 3D raster map layer.
r3.info Outputs basic information about a user-specified 3D raster map layer.
r3.in.v5d Imports 3-dimensional Vis5D files (i.e. the V5D file with 1 variable and 1 time step).
r3.mapcalc 3D raster map calculator.
r3.mapcalculator Calculates new grid3D volume from r3.mapcalc expression.
r3.mask Establishes the current working 3D raster mask.
r3.mkdspf Creates a display file from an existing 3D raster map according to specified threshold levels.
r3.null Explicitly create the 3D NULL-value bitmap file.
r3.out.ascii Converts a 3D raster map layer into an ASCII text file.
r3.out.v5d Exports GRASS 3D raster map to 3-dimensional Vis5D file.
r3.out.vtk Converts 3D raster maps into the VTK-ASCII format.
r3.stats Generates volume statistics for 3D raster maps.
r3.timestamp Print/add/remove a timestamp for a 3D raster map
r3.to.rast Converts 3D raster maps to 2D raster maps
r3.univar Calculates univariate statistics from the non-null 3d cells of a raster3d map.



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