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).
| d.background | Fills the graphics display frame with user defined color. |
| d.colorlist | Outputs a list of all available display colors. |
| d.correlate | Prints a graph of the correlation between raster maps (in pairs). |
| d.frame | Manages display frames on the user's graphics monitor. |
| d.out.file | Saves the contents of the active display monitor to a graphics file. |
| d.polar | Draws polar diagram of angle map such as aspect or flow directions |
| d.rast.edit | Edits cell values in a raster map. |
| d.rast.leg | Displays a raster map and its legend on a graphics window |
| d.redraw | Redraws the content of currently selected monitor. |
| d.shade | Drapes a color raster over an shaded relief or aspect map. |
| d.to.rast | Saves the contents of the active display monitor to a raster map. |
| d.what.rast | Allows the user to interactively query raster map layers at user-selected locations. |
| d.what.vect | Allows the user to interactively query vector map layers at user-selected locations. |
| db.columns | List all columns for a given table. |
| db.connect | Prints/sets general DB connection for current mapset. |
| db.copy | Copy a table.
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| db.createdb | Creates an empty database. |
| db.databases | Lists all databases for a given driver and location. |
| db.describe | Describes a table in detail. |
| db.drivers | Lists all database drivers. |
| db.dropcolumn | Drops a column from selected attribute table. |
| db.dropdb | Removes an existing database. |
| db.droptable | Drops an attribute table. |
| db.execute | Executes any SQL statement.
|
| db.in.ogr | Imports attribute tables in various formats. |
| db.login | Sets user/password for DB driver/database. |
| db.out.ogr | Exports attribute tables into various formats. |
| db.select | Selects data from attribute table.
|
| db.tables | Lists all tables for a given database. |
| db.test | Test database driver, database must exist and set by db.connect. |
| db.univar | Calculates univariate statistics on selected table column. |
| g.access | Controls access to the current mapset for other users on the system.
|
| g.cairocomp | Overlays multiple X Pixmaps. |
| g.dirseps | Internal GRASS utility for converting directory separator characters.
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| g.download.location | Download GRASS Location from the web
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| g.extension.all | Rebuilds or removes all locally installed GRASS Addons extensions.
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| g.extension | Maintains GRASS Addons extensions in local GRASS installation.
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| g.filename | Prints GRASS data base file names. |
| g.findetc | Searches for GRASS support files. |
| 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.
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| g.gui | Launches a GRASS graphical user interface (GUI) session.
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| g.gui.iclass | Tool for supervised classification of imagery data.
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| 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.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.
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| 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.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.
|
| r.blend | Blends color components of two raster maps by a given ratio. |
| r.buffer.lowmem | Creates a raster map showing buffer zones surrounding cells that contain non-NULL category values.
|
| r.colors.stddev | Sets color rules based on stddev from a raster map's mean value. |
| r.drain | Traces a flow through an elevation model or cost surface on a raster map. |
| r.fillnulls | Fills no-data areas in raster maps using spline interpolation. |
| r.grow | Generates a raster map layer with contiguous areas grown by one cell. |
| r.import | Imports raster data into a GRASS raster map using GDAL library and reprojects on the fly. |
| r.in.aster | Georeference, rectify, and import Terra-ASTER imagery and relative DEMs using gdalwarp. |
| r.in.srtm | Imports SRTM HGT files into raster map. |
| r.in.wms | Downloads and imports data from OGC WMS and OGC WMTS web mapping servers. |
| r.mapcalc.simple | Calculates a new raster map from a simple r.mapcalc expression. |
| r.mask | Creates a MASK for limiting raster operation. |
| r.out.xyz | Exports a raster map to a text file as x,y,z values based on cell centers. |
| r.pack | Exports a raster map as GRASS GIS specific archive file |
| r.plane | Creates raster plane map given dip (inclination), aspect (azimuth) and one point. |
| r.reclass.area | Reclasses a raster map greater or less than user specified area size (in hectares). |
| r.rgb | Splits a raster map into red, green and blue maps. |
| r.semantic.label | Manages semantic label information assigned to a single raster map or to a list of raster maps. |
| r.shade | Drapes a color raster over an shaded relief or aspect map. |
| r.tileset | Produces tilings of the source projection for use in the destination region and projection. |
| r.unpack | Imports a GRASS GIS specific raster archive file (packed with r.pack) as a raster map |
| t.connect | Prints/sets general temporal GIS database connection for current mapset. |
| t.copy | Creates a copy of a space time raster dataset. |
| t.create | Creates a space time dataset. |
| t.info | Lists information about space time datasets and maps. |
| t.list | Lists space time datasets and maps registered in the temporal database. |
| t.merge | Merges several space time datasets into a single space time dataset. |
| t.rast.accdetect | Detects accumulation patterns in temporally accumulated space time raster datasets created by t.rast.accumulate. |
| t.rast.accumulate | Computes cyclic accumulations of a space time raster dataset. |
| t.rast.aggregate.ds | Aggregates data of an existing space time raster dataset using the time intervals of a second space time dataset. |
| t.rast.aggregate | Aggregates temporally the maps of a space time raster dataset by a user defined granularity. |
| t.rast.algebra | Apply temporal and spatial operations on space time raster datasets using temporal raster algebra. |
| t.rast.colors | Creates/modifies the color table associated with each raster map of the space time raster dataset. |
| t.rast.contour | Produces a space time vector dataset of specified contours from a space time raster dataset. |
| t.rast.export | Exports space time raster dataset. |
| t.rast.extract | Extracts a subset of a space time raster datasets. |
| t.rast.gapfill | Replaces gaps in a space time raster dataset with interpolated raster maps. |
| t.rast.import | Imports space time raster dataset. |
| t.rast.list | Lists registered maps of a space time raster dataset. |
| t.rast.mapcalc | Performs spatio-temporal mapcalc expressions on temporally sampled maps of space time raster datasets. |
| t.rast.neighbors | Performs a neighborhood analysis for each map in a space time raster dataset. |
| t.rast.out.vtk | Exports space time raster dataset as VTK time series. |
| t.rast.series | Performs different aggregation algorithms from r.series on all or a subset of raster maps in a space time raster dataset. |
| t.rast.to.rast3 | Converts a space time raster dataset into a 3D raster map. |
| t.rast.to.vect | Converts a space time raster dataset into a space time vector dataset |
| t.rast.univar | Calculates univariate statistics from the non-null cells for each registered raster map of a space time raster dataset. |
| t.rast.what | Sample a space time raster dataset at specific vector point coordinates and write the output to stdout using different layouts |
| t.rast3d.algebra | Apply temporal and spatial operations on space time 3D raster datasets using temporal 3D raster algebra. |
| t.rast3d.extract | Extracts a subset of a space time 3D raster dataset. |
| t.rast3d.list | Lists registered maps of a space time raster3d dataset. |
| t.rast3d.mapcalc | Performs r3.mapcalc expressions on maps of sampled space time 3D raster datasets. |
| t.rast3d.univar | Calculates univariate statistics from the non-null cells for each registered 3D raster map of a space time 3D raster dataset. |
| t.register | Assigns timestamps and registers raster, vector and raster3d maps in a space time dataset. |
| t.remove | Removes space time datasets from temporal database. |
| t.rename | Renames a space time dataset |
| t.sample | Samples the input space time dataset(s) with a sample space time dataset and print the result to stdout. |
| t.select | Select maps from space time datasets by topological relationships to other space time datasets using temporal algebra. |
| t.shift | Shifts temporally the maps of a space time dataset. |
| t.snap | Snaps temporally the maps of a space time dataset. |
| t.support | Modifies the metadata of a space time dataset. |
| t.topology | Lists temporal topology of a space time dataset. |
| t.unregister | Unregisters raster, vector and raster3d maps from the temporal database or a specific space time dataset. |
| t.upgrade | Upgrades the version of the temporal database. |
| t.vect.algebra | Apply temporal and spatial operations on space time vector datasets using temporal vector algebra. |
| t.vect.db.select | Prints attributes of vector maps registered in a space time vector dataset. |
| t.vect.export | Exports a space time vector dataset as GRASS GIS specific archive file. |
| t.vect.extract | Extracts a subset of a space time vector dataset. |
| t.vect.import | Imports a space time vector dataset from a GRASS GIS specific archive file. |
| t.vect.list | Lists registered maps of a space time vector dataset. |
| t.vect.observe.strds | Observes specific locations in a space time raster dataset over a period of time using vector points. |
| t.vect.univar | Calculates univariate statistics of attributes for each registered vector map of a space time vector dataset |
| t.vect.what.strds | Stores raster map values at spatial and temporal positions of vector points as vector attributes. |
| v.build.all | Rebuilds topology on all vector maps in the current mapset. |
| v.centroids | Adds missing centroids to closed boundaries. |
| v.clip | Extracts features of input map which overlay features of clip map. |
| v.db.addcolumn | Adds one or more columns to the attribute table connected to a given vector map. |
| v.db.addtable | Creates and connects a new attribute table to a given layer of an existing vector map. |
| v.db.dropcolumn | Drops a column from the attribute table connected to a given vector map. |
| v.db.droprow | Removes a vector feature from a vector map through attribute selection. |
| v.db.droptable | Removes existing attribute table of a vector map. |
| v.db.join | Joins a database table to a vector map table. |
| v.db.reconnect.all | Reconnects attribute tables for all vector maps from the current mapset to a new database. |
| v.db.renamecolumn | Renames a column in the attribute table connected to a given vector map. |
| v.db.univar | Calculates univariate statistics on selected table column for a GRASS vector map. |
| v.db.update | Updates a column in the attribute table connected to a vector map. |
| v.dissolve | Dissolves boundaries between adjacent areas sharing a common category number or attribute. |
| v.external.out | Defines vector output format. |
| v.import | Imports vector data into a GRASS vector map using OGR library and reprojects on the fly. |
| v.in.e00 | Imports E00 file into a vector map. |
| v.in.geonames | Imports geonames.org country files into a vector points map. |
| v.in.lines | Imports ASCII x,y[,z] coordinates as a series of lines. |
| v.in.mapgen | Imports Mapgen or Matlab-ASCII vector maps into GRASS. |
| v.in.wfs | Imports GetFeature from a WFS server. |
| v.pack | Exports a vector map as GRASS GIS specific archive file |
| v.rast.stats | Calculates univariate statistics from a raster map based on a vector map and uploads statistics to new attribute columns. |
| v.report | Reports geometry statistics for vector maps. |
| v.timestamp | Modifies a timestamp for a vector map.
|
| v.to.lines | Converts vector polygons or points to lines. |
| v.unpack | Imports a GRASS GIS specific vector archive file (packed with v.pack) as a vector map |
| v.what.strds | Uploads space time raster dataset values at positions of vector points to the table. |
| v.what.vect | Uploads vector values at positions of vector points to the table. |
