General modules - GRASS GIS 8.3.3dev Reference Manual

Note: This document is for an older version of GRASS GIS that has been discontinued. You should upgrade, and read the current manual page.

GRASS GIS 8.3.3dev Reference Manual

Geographic Resources Analysis Support System, commonly referred to as GRASS GIS, 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 GPLed), image processing and geographic information system (GIS).

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General commands:

g.access	Controls access to the current mapset for other users on the system.
g.cairocomp	Overlays multiple X Pixmaps.
g.copy	Creates copies of maps and other elements
g.dirseps	Internal GRASS utility for converting directory separator characters.
g.download.location	Download GRASS Location from the web
g.extension.all	Rebuilds or removes all locally installed GRASS Addons extensions.
g.extension	Maintains GRASS Addons extensions in local GRASS installation.
g.filename	Prints GRASS data base file names.
g.findetc	Searches for GRASS support files.
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.gui.animation	Tool for animating a series of raster and vector maps or a space time raster or vector dataset.
g.gui.datacatalog	Tool for browsing, modifying and managing GRASS maps.
g.gui.dbmgr	Launches graphical attribute table manager.
g.gui.gcp	Georectifies a map and allows managing Ground Control Points.
g.gui.gmodeler	Graphical Modeler.
g.gui	Launches a GRASS graphical user interface (GUI) session.
g.gui.iclass	Tool for supervised classification of imagery data.
g.gui.image2target	Georectifies a map and allows managing Ground Control Points for 3D correction.
g.gui.mapswipe	Interactively compares two maps by swiping a visibility bar.
g.gui.photo2image	Corrects scanning distortions of a paper photo.
g.gui.psmap	Tool for creating hardcopy map outputs.
g.gui.rdigit	Interactive editing and digitizing of raster maps.
g.gui.rlisetup	Configuration tool for r.li modules.
g.gui.timeline	Allows comparing temporal datasets by displaying their temporal extents in a plot.
g.gui.tplot	Plots the values of temporal datasets.
g.gui.vdigit	Interactive editing and digitization of vector maps.
g.list	Lists available GRASS data base files of the user-specified data type optionally using the search pattern.
g.manual	Displays the manual pages of GRASS modules.
g.mapset	Changes/reports current mapset.
g.mapsets	Modifies/prints the user's current mapset search path.
g.message	Prints a message, warning, progress info, or fatal error in the GRASS way.
g.mkfontcap	Generates the font configuration file by scanning various directories for fonts.
g.parser	Provides automated parser, GUI, and help support for GRASS scipts.
g.pnmcomp	Overlays multiple PPM image files.
g.ppmtopng	Converts between PPM/PGM and PNG image formats.
g.proj	Prints or modifies GRASS projection information files (in various co-ordinate system descriptions).
g.region	Manages the boundary definitions for the geographic region.
g.remove	Removes data base element files from the user's current mapset using the search pattern.
g.rename	Renames data base element files in the user's current mapset.
g.search.modules	Search in GRASS modules using keywords
g.tempfile	Creates a temporary file and prints it's file name.
g.version	Displays GRASS GIS version info.

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