GRASS GIS 6.2.4cvs 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

general commands:
g.access g.access
g.ask Prompts the user for the names of GRASS data base files.
g.copy Copies available data files in the user's current mapset search path and location to the appropriate element directories under the user's current mapset.
g.filename Prints GRASS data base file names.
g.findfile Searches for GRASS data base files and sets variables for the shell.
g.gisenv Outputs and modifies the user's current GRASS variable settings.
g.list Lists available GRASS data base files of the user-specified data type to standard output.
g.manual Display the HTML man pages of GRASS
g.mapset Change current mapset
g.mapsets Modifies the user's current mapset search path, affecting the user's access to data existing under the other GRASS mapsets in the current location.
g.mlist Apply regular expressions and wildcards to g.list
g.mremove Apply regular expressions and wildcards to g.remove
g.parser g.parser
g.pnmcomp Overlays multiple PPM image files.
g.proj Prints and manipulates GRASS projection information files.
g.region Program to manage the boundary definitions for the geographic region.
g.remove Removes data base element files from the user's current mapset.
g.rename Renames data base element files in the user's current mapset.
g.tempfile Creates a temporary file and prints the file name.
g.transform Computes a coordinate transformation based on the control points
g.version Displays version and copyright information

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