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GRASS GIS 8.4.0 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). Go back to help overview

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.

Main index | Topics index | Keywords index | Graphical index | Full index

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GRASS 8.4.0 GRASS GIS User's Manual