## GRASS GIS 6.4.4 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).

### Quick Introduction How to start with GRASS Intro projections and spatial transformations Intro 2D raster map processing Intro 3D raster map (voxel) processing Intro image processing Intro vector map processing and network analysis Intro database management | ### Display/Graphical User Interfaces wxGUI wxPython-based GUI frontend gis.m and d.m TCL/TK-based GUI frontend Display commands manual Display drivers nviz 3D visualization and animation tool xganim tool for animating a raster map series
### Raster and voxel processing Raster commands manual Raster3D commands manual | ### Image processing Imagery commands manual
### Vector processing Vector commands manual | ### Database SQL support in GRASS GIS Database commands manual
### General GRASS startup manual page General commands manual | ### Miscellaneous Misc. commands manual
### Variables GRASS variables and environment variables | ### Printing Postscript commands manual

Help Index | Full Index
© 2003-2014 GRASS Development Team, GRASS GIS 6.4.4 Reference Manual