&File Workspace New Create new workspace OnWorkspaceNew Ctrl+N ID_NEW Open Load workspace from file OnWorkspaceOpen Ctrl+O ID_OPEN Save Save workspace OnWorkspaceSave Ctrl+S ID_SAVE Save as Save workspace to file OnWorkspaceSaveAs ID_SAVEAS Close Close workspace file OnWorkspaceClose ID_CLOSE Load GRC file (Tcl/Tk GUI) Load map layers from GRC file to layer tree OnWorkspaceLoadGrcFile Map display Add raster Add raster map layer to current display OnAddRaster Ctrl+Shift+R Add vector Add vector map layer to current display OnAddVector Ctrl+Shift+V Add multiple rasters or vectors Add multiple raster or vector map layers to current display OnAddMaps Ctrl+Shift+L New map display window Open new map display window OnNewDisplay Close current map display window Close current map display window OnDisplayClose Ctrl+W Close all open map display windows Close all open map display windows OnDisplayCloseAll Import raster data Common formats import Import raster data into a GRASS map layer using GDAL. raster,import OnImportGdalLayers r.in.gdal ASCII x,y,z point import and gridding Create a raster map from an assemblage of many coordinates using univariate statistics. raster,import,LIDAR OnMenuCmd r.in.xyz ASCII grid import Converts a GRASS ASCII raster file to binary raster map. raster,import,conversion,ascii OnMenuCmd r.in.ascii ASCII polygons, lines, and point import Creates raster maps from ASCII polygon/line/point data files. raster,import OnMenuCmd r.in.poly Raw binary array import Import a binary raster file into a GRASS raster map layer. raster,import OnMenuCmd r.in.bin ESRI ASCII grid import Converts an ESRI ARC/INFO ascii raster file (GRID) into a GRASS raster map. raster,import OnMenuCmd r.in.arc GRIDATB.FOR import Imports GRIDATB.FOR map file (TOPMODEL) into GRASS raster map raster,import OnMenuCmd r.in.gridatb Matlab 2D array import Imports a binary MAT-File(v4) to a GRASS raster. raster,import OnMenuCmd r.in.mat PNG import Imports non-georeferenced PNG format image. raster,import,png OnMenuCmd r.in.png SPOT NDVI import Imports SPOT VGT NDVI data into a raster map. imagery,import OnMenuCmd i.in.spotvgt SRTM HGT import Imports SRTM HGT files into raster map. raster,import OnMenuCmd r.in.srtm Terra ASTER HDF import Georeference, rectify, and import Terra-ASTER imagery and relative DEMs using gdalwarp. raster,imagery,import OnMenuCmd r.in.aster LAS LiDAR points import Create a raster map from LAS LiDAR points using univariate statistics. raster,import,LIDAR OnMenuCmd r.in.lidar WMS import Download and import data from WMS servers. raster,import,wmsOnImportWMS r.in.wms Unpack raster map Unpacks a raster map packed with r.pack. raster,import,copyingOnMenuCmd r.unpack Import vector data Common import formats Converts vector layers into a GRASS vector map using OGR. vector,import OnImportOgrLayers v.in.ogr ASCII points or GRASS ASCII format Creates a vector map from an ASCII points file or ASCII vector file. vector,import OnMenuCmd v.in.ascii ASCII points as a vector lines Imports ASCII x,y[,z] coordinates as a series of lines. vector,import OnMenuCmd v.in.lines Historical GRASS vector import Imports older versions of GRASS vector maps. vector,import,conversion OnMenuCmd v.convert Historical GRASS vector import (all maps) Converts all older versions of GRASS vector maps in current mapset to current format. vector,import,conversion OnMenuCmd v.convert.all DXF import Converts files in DXF format to GRASS vector map format. vector,import,dxf OnImportDxfFile v.in.dxf WFS Imports GetFeature from WFS. vector,import,wfs OnMenuCmd v.in.wfs ESRI e00 import Imports E00 file into a vector map. vector,import OnMenuCmd v.in.e00 GPS data import Import waypoints, routes, and tracks from a GPS receiver or many common GPS file formats. vector,import,GPS OnMenuCmd v.in.gps Geonames import Imports geonames.org country files into a vector points map. vector,import,gazetteer OnMenuCmd v.in.geonames GEOnet import Imports US-NGA GEOnet Names Server (GNS) country files into a GRASS vector points map. vector,import,gazetteer OnMenuCmd v.in.gns Matlab array or Mapgen format import Imports Mapgen or Matlab-ASCII vector maps into GRASS. vector,import OnMenuCmd v.in.mapgen LAS LiDAR points import Converts LAS LiDAR point clouds to a GRASS vector map with libLAS. vector,import OnMenuCmd v.in.lidar Import 3D raster data ASCII 3D import Converts a 3D ASCII raster text file into a (binary) 3D raster map. raster3d,voxel,import OnMenuCmd r3.in.ascii Vis5D import Import 3-dimensional Vis5D files. raster3d,voxel OnMenuCmd r3.in.v5d Import database table Multiple import formats using OGR Imports attribute tables in various formats. database,attribute table OnMenuCmd db.in.ogr Export raster map Common export formats Exports GRASS raster maps into GDAL supported formats. raster,export OnMenuCmd r.out.gdal ASCII grid export Converts a raster map layer into a GRASS ASCII text file. raster,export OnMenuCmd r.out.ascii ASCII x,y,z points export Exports a raster map to a text file as x,y,z values based on cell centers. raster,export OnMenuCmd r.out.xyz ESRI ASCII grid export Converts a raster map layer into an ESRI ARCGRID file. raster,export OnMenuCmd r.out.arc GRIDATB.FOR export Exports GRASS raster map to GRIDATB.FOR map file (TOPMODEL). raster,export OnMenuCmd r.out.gridatb Matlab 2D array export Exports a GRASS raster to a binary MAT-File. raster,export OnMenuCmd r.out.mat Raw binary array export Exports a GRASS raster to a binary array. raster,export OnMenuCmd r.out.bin MPEG-1 export Converts raster map series to MPEG movie. raster,export,animation OnMenuCmd r.out.mpeg PNG export Export a GRASS raster map as a non-georeferenced PNG image. raster,export,png OnMenuCmd r.out.png PPM export Converts a GRASS raster map to a PPM image file. raster,export OnMenuCmd r.out.ppm PPM from RGB export Converts 3 GRASS raster layers (R,G,B) to a PPM image file. raster,export OnMenuCmd r.out.ppm3 POV-Ray export Converts a raster map layer into a height-field file for POV-Ray. raster,export OnMenuCmd r.out.pov TIFF export Exports a GRASS raster map to a 8/24bit TIFF image file. raster,export OnMenuCmd r.out.tiff VRML export Exports a raster map to the Virtual Reality Modeling Language (VRML). raster,export,VRML OnMenuCmd r.out.vrml VTK export Converts raster maps into the VTK-ASCII format. raster,export OnMenuCmd r.out.vtk Pack raster map Packs up a raster map and support files for copying. raster,export,copyingOnMenuCmd r.pack Export vector map Common export formats Converts a vector map to any of the supported OGR vector formats. vector,export,ogr OnMenuCmd v.out.ogr ASCII points or GRASS ASCII vector export Exports a vector map to a GRASS ASCII vector representation. vector,export,ascii OnMenuCmd v.out.ascii DXF export Exports vector map to DXF file format. vector,export OnMenuCmd v.out.dxf Multiple GPS export formats using GPSBabel Exports a vector map to a GPS receiver or file format supported by GPSBabel. vector,export,GPS OnMenuCmd v.out.gps POV-Ray export Converts GRASS x,y,z points to POV-Ray x,z,y format. vector,export OnMenuCmd v.out.pov SVG export Exports a vector map to SVG file. vector,export OnMenuCmd v.out.svg VTK export Converts a vector map to VTK ASCII output. vector,export OnMenuCmd v.out.vtk Export 3D raster maps ASCII 3D export Converts a 3D raster map layer into a ASCII text file. raster3d,voxel,export OnMenuCmd r3.out.ascii Vis5D export Exports GRASS 3D raster map to 3-dimensional Vis5D file. raster3d,voxel,export OnMenuCmd r3.out.v5d VTK export Converts 3D raster maps into the VTK-ASCII format. raster3d,voxel,export OnMenuCmd r3.out.vtk Export database table Common export formats using OGR Exports attribute tables into various formats. database,attribute table OnMenuCmd db.out.ogr Link external formats Link external raster data Link GDAL supported raster data as a pseudo GRASS raster map layer. raster,import,input,external OnLinkGdalLayers r.external Link external vector data Creates a new pseudo-vector map as a link to an OGR-supported layer. vector,import,input,external,OGR,PostGIS OnLinkOgrLayers v.external Output format for raster data Defines raster output format utilizing GDAL library. raster,export,output,external OnMenuCmd r.external.out Output format for vector data Defines vector output format utilizing OGR library. vector,export,output,external,OGR,PostGIS OnVectorOutputFormat v.external.out Manage maps and volumes Copy Copies available data files in the current mapset search path to the user's current mapset. general,map management,copy OnMenuCmd g.copy List Lists available GRASS data base files of the user-specified data type. general,map management,list OnMenuCmd g.list List filtered Lists available GRASS data base files of the user-specified data type optionally using the search pattern. general,map management,list OnMenuCmd g.mlist Rename Renames data base element files in the user's current mapset. general,map management,rename OnMenuCmd g.rename Delete Removes data base element files from the user's current mapset. general,map management,remove OnMenuCmd g.remove Delete filtered Removes data base element files from the user's current mapset using regular expressions. general,map management,remove,multi OnMenuCmd g.mremove Map type conversions Raster to vector Converts a raster map into a vector map. raster,conversion,geometry,vectorization OnMenuCmd r.to.vect Raster series to volume Converts 2D raster map slices to one 3D raster volume map. raster,volume,conversion OnMenuCmd r.to.rast3 Raster 2.5D to volume Creates a 3D volume map based on 2D elevation and value raster maps. raster,raster3d,voxel,conversion OnMenuCmd r.to.rast3elev Vector to raster Converts (rasterize) a vector map into a raster map. vector,raster,conversion,rasterization OnMenuCmd v.to.rast Vector to volume Converts a vector map (only points) into a 3D raster map. vector,volume,conversion OnMenuCmd v.to.rast3 2D vector to 3D vector Performs transformation of 2D vector features to 3D. vector,geometry,3D OnMenuCmd v.to.3d Sites to vector Converts a GRASS site_lists file into a vector map. vector,import,sites OnMenuCmd v.in.sites Volume to raster series Converts 3D raster maps to 2D raster maps raster3d,raster,voxel OnMenuCmd r3.to.rast Georectify Manage Ground Control Points for Georectification OnGCPManager Graphical modeler Launch Graphical modeler OnGModeler Run model Run model prepared by Graphical modeler OnRunModel NVIZ (requires Tcl/Tk) nviz - Visualization and animation tool for GRASS data. visualization,raster,raster3d,vector,display OnMenuCmd nviz 3D image rendering Creates a 3D rendering of GIS data. visualization,raster,vector,raster3d OnMenuCmd m.nviz.image Bearing/distance to coordinates A simple utility for converting bearing and distance measurements to coordinates and vice versa. miscellaneous,distance OnMenuCmd m.cogo Cartographic Composer Launch Cartographic Composer postscript,map,printing OnPsMap ps.map Map Swipe Launch Map Swipe visualization,raster OnMapSwipe Launch script Launches script file. OnRunScript Exit GUI Quit wxGUI session OnCloseWindow Ctrl+Q ID_EXIT &Settings Region Display region Manages the boundary definitions for the geographic region. general,settings RunMenuCmd g.region -p Set region Manages the boundary definitions for the geographic region. general,settings OnMenuCmd g.region GRASS working environment Mapset access Set/unset access to other mapsets in current location general,settings,search path OnMapsets g.mapsets User access Controls access to the current mapset for other users on the system. general,map management,permission OnMenuCmd g.access Change working environment Changes/reports current mapset. general,settings OnMenuCmd g.mapset Change location and mapset Change current location and mapset. general,location,current OnChangeLocation Change mapset Change current mapset. general,mapset,current OnChangeMapset Change working directory Change working directory OnChangeCWD Show settings Outputs and modifies the user's current GRASS variable settings. general,settings,variables RunMenuCmd g.gisenv -n Change settings Outputs and modifies the user's current GRASS variable settings. general,settings,variables OnMenuCmd g.gisenv Create new location Launches location wizard to create new GRASS location. general,location,wizard OnLocationWizard Create new mapset Creates new mapset in the current location, changes current mapset. general,mapset,create OnCreateMapset Version Displays version and copyright information. general,version RunMenuCmd g.version -c Map projections Display map projection Converts co-ordinate system descriptions (i.e. projection information) between various formats (including GRASS format). general,projection,create location RunMenuCmd g.proj -p Manage projections Prints and manipulates GRASS projection information files (in various co-ordinate system descriptions). general,projection,create location OnMenuCmd g.proj Convert coordinates Converts coordinates from one projection to another (cs2cs frontend). miscellaneous,projection OnMenuCmd m.proj Install extension from add-ons Installs new extension from GRASS AddOns SVN repository. general,installation,extensions OnInstallExtension g.extension Update installed extensions Rebuilds all locally installed GRASS Addons extensions. general,installation,extensions OnMenuCmd g.extension.rebuild.all Remove extension Removes installed GRASS AddOns extension. general,installation,extensions OnUninstallExtension g.extension Preferences User GUI preferences (display font, commands, digitizer, etc.) OnPreferences ID_PREFERENCES &Raster Develop raster map Compress/decompress Compresses and decompresses raster maps. raster,map management OnMenuCmd r.compress Region boundaries Sets the boundary definitions for a raster map. raster,metadata OnMenuCmd r.region Manage NULL values Manages NULL-values of given raster map. raster,null data OnMenuCmd r.null Quantization Produces the quantization file for a floating-point map. raster,quantization,statistics OnMenuCmd r.quant Timestamp Modifies a timestamp for a raster map. raster,metadata,timestamp OnMenuCmd r.timestamp Resample using aggregate statistics Resamples raster map layers to a coarser grid using aggregation. raster,resample OnMenuCmd r.resamp.stats Resample using multiple methods Resamples raster map layers to a finer grid using interpolation. raster,resample OnMenuCmd r.resamp.interp Resample using nearest neighbor GRASS raster map layer data resampling capability. raster,resample OnMenuCmd r.resample Resample using spline tension Reinterpolates and optionally computes topographic analysis from input raster map to a new raster map (possibly with different resolution) using regularized spline with tension and smoothing. raster,resample OnMenuCmd r.resamp.rst Resample using bspline Bicubic or bilinear spline interpolation with Tykhonov regularization. raster,surface,resample,interpolation OnMenuCmd r.resamp.bspline Resample using analytic kernel Resamples raster map layers using an analytic kernel. raster,resample OnMenuCmd r.resamp.filter Support file maintenance Allows creation and/or modification of raster map layer support files. raster,metadata OnMenuCmd r.support Update map statistics Update raster map statistics raster,statistics OnMenuCmd r.support.stats Reproject raster map Re-projects a raster map from given location to the current location. raster,projection,transformation OnMenuCmd r.proj Tiling Produces tilings of the source projection for use in the destination region and projection. raster,tiling OnMenuCmd r.tileset Manage colors Color tables Creates/modifies the color table associated with a raster map. raster,color table OnMenuCmd r.colors Color tables (stddev) Sets color rules based on stddev from a raster map's mean value. raster,color table OnMenuCmd r.colors.stddev Create color rules Interactive management of raster color tables. raster,color table RulesCmd r.colors Export color table Exports the color table associated with a raster map. raster,color table,export OnMenuCmd r.colors.out Blend 2 color rasters Blends color components of two raster maps by a given ratio. raster OnMenuCmd r.blend Create RGB Combines red, green and blue raster maps into a single composite raster map. raster,composite OnMenuCmd r.composite RGB to HIS Generates red, green and blue raster map layers combining hue, intensity and saturation (HIS) values from user-specified input raster map layers. raster,color transformation,RGB,HIS OnMenuCmd r.his Query raster maps Query values by coordinates Queries raster maps on their category values and category labels. raster,position,querying OnMenuCmd r.what Query colors by value Queries colors for a raster map layer. raster,querying,color table OnMenuCmd r.what.color Map type conversions Raster to vector Converts a raster map into a vector map. raster,conversion,geometry,vectorization OnMenuCmd r.to.vect Raster series to volume Converts 2D raster map slices to one 3D raster volume map. raster,volume,conversion OnMenuCmd r.to.rast3 Raster 2.5D to volume Creates a 3D volume map based on 2D elevation and value raster maps. raster,raster3d,voxel,conversion OnMenuCmd r.to.rast3elev Buffer rasters Creates a raster map showing buffer zones surrounding cells that contain non-NULL category values. raster,buffer OnMenuCmd r.buffer Concentric circles Creates a raster map containing concentric rings around a given point. raster,geometry OnMenuCmd r.circle Closest points Locates the closest points between objects in two raster maps. raster,distance OnMenuCmd r.distance Mask Creates a MASK for limiting raster operation. raster,mask OnMenuCmd r.mask Raster map calculator Raster map calculator. raster,algebra OnMapCalculator r.mapcalc Neighborhood analysis Moving window Makes each cell category value a function of the category values assigned to the cells around it, and stores new cell values in an output raster map layer. raster,algebra,statistics OnMenuCmd r.neighbors Neighborhood points Neighborhood analysis tool for vector point maps. vector,raster,aggregation OnMenuCmd v.neighbors Overlay rasters Cross product Creates a cross product of the category values from multiple raster map layers. raster,statistics OnMenuCmd r.cross Raster series Makes each output cell value a function of the values assigned to the corresponding cells in the input raster map layers. raster,series OnMenuCmd r.series Patch raster maps Creates a composite raster map layer by using known category values from one (or more) map layer(s) to fill in areas of "no data" in another map layer. raster,geometry OnMenuCmd r.patch Statistical overlay Calculates category or object oriented statistics (accumulator-based statistics). raster,statistics OnMenuCmd r.statistics2 Quantiles overlay Compute category quantiles using two passes. raster,statistics OnMenuCmd r.statistics3 Solar radiance and shadows Solar irradiance and irradiation Solar irradiance and irradiation model. raster,sun energy OnMenuCmd r.sun Shadows map Calculates cast shadow areas from sun position and elevation raster map. raster,sun position OnMenuCmd r.sunmask Terrain analysis Generate contour lines Produces a vector map of specified contours from a raster map. raster,DEM,contours,vector OnMenuCmd r.contour Cost surface Creates a raster map showing the cumulative cost of moving between different geographic locations on an input raster map whose cell category values represent cost. raster,cost surface,cumulative costs OnMenuCmd r.cost Cumulative movement costs Outputs a raster map layer showing the anisotropic cumulative cost of moving between different geographic locations on an input elevation raster map layer whose cell category values represent elevation combined with an input raster map layer whose cell values represent friction cost. raster,cost surface,cumulative costs OnMenuCmd r.walk Least cost route or flow Traces a flow through an elevation model on a raster map. raster,hydrology OnMenuCmd r.drain Shaded relief Creates shaded relief map from an elevation map (DEM). raster,elevation OnMenuCmd r.shaded.relief Slope and aspect Generates raster maps of slope, aspect, curvatures and partial derivatives from a elevation raster map. raster,terrain OnMenuCmd r.slope.aspect Terrain parameters Extracts terrain parameters from a DEM. raster,geomorphology OnMenuCmd r.param.scale Textural features Generate images with textural features from a raster map. raster,algebra,statistics,texture OnMenuCmd r.texture Visibility Computes the viewshed of a point on a raster terrain. raster,viewshed,line of sight OnMenuCmd r.viewshed Visibility [DEPRECATED] Line-of-sight raster analysis program. raster,viewshed OnMenuCmd r.los Distance to features Generates a raster map of distance to features in input raster map. raster,distance OnMenuCmd r.grow.distance Horizon angle Horizon angle computation from a digital elevation model. raster,sun position OnMenuCmd r.horizon Transform features Clump Recategorizes data in a raster map by grouping cells that form physically discrete areas into unique categories. raster,statistics,reclass OnMenuCmd r.clump Grow Generates a raster map layer with contiguous areas grown by one cell. raster OnMenuCmd r.grow Thin Thins non-zero cells that denote linear features in a raster map layer. raster,geometry OnMenuCmd r.thin Hydrologic modeling Carve stream channels Generates stream channels. raster,hydrology OnMenuCmd r.carve Fill lake Fills lake at given point to given level. raster,hydrology OnMenuCmd r.lake Depressionless map and flowlines Filters and generates a depressionless elevation map and a flow direction map from a given elevation raster map. raster,hydrology OnMenuCmd r.fill.dir Flow accumulation Flow computation for massive grids (float version). raster,hydrology OnMenuCmd r.terraflow Flow lines Constructs flowlines. raster,hydrology OnMenuCmd r.flow Watershed analysis Calculates hydrological parameters and RUSLE factors. raster,hydrology OnMenuCmd r.watershed Watershed subbasins Generates watershed subbasins raster map. raster,hydrology OnMenuCmd r.basins.fill Watershed basin creation Creates watershed basins. raster,hydrology OnMenuCmd r.water.outlet SIMWE Overland flow modeling Overland flow hydrologic simulation using path sampling method (SIMWE). raster,hydrology OnMenuCmd r.sim.water SIMWE Sediment flux modeling Sediment transport and erosion/deposition simulation using path sampling method (SIMWE). raster,hydrology,sediment flow,erosion,deposition OnMenuCmd r.sim.sediment Topographic index map Creates topographic index map from elevation raster map. raster,hydrology OnMenuCmd r.topidx TOPMODEL simulation Simulates TOPMODEL which is a physically based hydrologic model. raster,hydrology OnMenuCmd r.topmodel USLE K-factor Computes USLE Soil Erodibility Factor (K). raster,hydrology,soil,erosion OnMenuCmd r.uslek USLE R-factor Computes USLE R factor, Rainfall erosivity index. raster,hydrology,rainfall,erosion OnMenuCmd r.usler Groundwater modeling Groundwater flow Numerical calculation program for transient, confined and unconfined groundwater flow in two dimensions. raster,groundwater flow OnMenuCmd r.gwflow Groundwater solute transport Numerical calculation program for transient, confined and unconfined solute transport in two dimensions raster,hydrology,solute transport OnMenuCmd r.solute.transport Landscape structure modeling Analyze landscape Contains a set of measures for attributes, diversity, texture, juxtaposition, and edge. raster OnMenuCmd r.le.pixel Analyze patches Calculates attribute, patch size, core (interior) size, shape, fractal dimension, and perimeter measures for sets of patches in a landscape. raster OnMenuCmd r.le.patch Landscape patch analysis Set up sampling and analysis framework Configuration editor for r.li.'index' raster,landscape structure analysis OnMenuCmd r.li.setup Edge density Calculates edge density index on a raster map, using a 4 neighbour algorithm raster,landscape structure analysis,patch index OnMenuCmd r.li.edgedensity Contrast weighted edge density Calculates contrast weighted edge density index on a raster map raster,landscape structure analysis,patch index OnMenuCmd r.li.cwed Patch area mean Calculates mean patch size index on a raster map, using a 4 neighbour algorithm raster,landscape structure analysis,patch index OnMenuCmd r.li.mps Patch area range Calculates range of patch area size on a raster map raster,landscape structure analysis,patch index OnMenuCmd r.li.padrange Patch area Std Dev Calculates standard deviation of patch area a raster map raster,landscape structure analysis,patch index OnMenuCmd r.li.padsd Patch area Coeff Var Calculates coefficient of variation of patch area on a raster map raster,landscape structure analysis,patch index OnMenuCmd r.li.padcv Patch density Calculates patch density index on a raster map, using a 4 neighbour algorithm raster,landscape structure analysis,patch index OnMenuCmd r.li.patchdensity Patch number Calculates patch number index on a raster map, using a 4 neighbour algorithm. raster,landscape structure analysis,patch index OnMenuCmd r.li.patchnum Dominance's diversity Calculates dominance's diversity index on a raster map raster,landscape structure analysis,diversity index OnMenuCmd r.li.dominance Shannon's diversity Calculates Shannon's diversity index on a raster map raster,landscape structure analysis,diversity index OnMenuCmd r.li.shannon Simpson's diversity Calculates Simpson's diversity index on a raster map raster,landscape structure analysis,diversity index OnMenuCmd r.li.simpson Richness Calculates dominance's diversity index on a raster map raster,landscape structure analysis,dominance index OnMenuCmd r.li.richness Shape index Calculates shape index on a raster map raster,landscape structure analysis,patch index OnMenuCmd r.li.shape Wildfire modeling Rate of spread Generates rate of spread raster map layers. raster,fire OnMenuCmd r.ros Least-cost spread paths Recursively traces the least cost path backwards to cells from which the cumulative cost was determined. raster,fire,cumulative costs OnMenuCmd r.spreadpath Anisotropic spread simulation Simulates elliptically anisotropic spread on a graphics window and generates a raster map of the cumulative time of spread, given raster maps containing the rates of spread (ROS), the ROS directions and the spread origins. raster,fire OnMenuCmd r.spread Change category values and labels Interactively edit category values Edits cell values in a raster map. display,raster,edit OnMenuCmd d.rast.edit Reclassify by size Reclasses a raster map greater or less than user specified area size (in hectares). raster,statistics,aggregation OnMenuCmd r.reclass.area Reclassify Reclassify raster map based on category values. raster,reclassification OnMenuCmd r.reclass Recode Recodes categorical raster maps. raster,recode categories OnMenuCmd r.recode Rescale Rescales the range of category values in a raster map layer. raster,rescale OnMenuCmd r.rescale Rescale with histogram Rescales histogram equalized the range of category values in a raster map layer. raster,rescale OnMenuCmd r.rescale.eq Generate random cells Random cells Generates random cell values with spatial dependence. raster,random,cell OnMenuCmd r.random.cells Random cells and vector points Creates a raster map layer and vector point map containing randomly located points. raster,random,vector OnMenuCmd r.random Generate surfaces Fractal surface Creates a fractal surface of a given fractal dimension. raster,surface,fractal OnMenuCmd r.surf.fractal Gaussian kernel density surface Generates a raster density map from vector point data using a moving kernel or optionally generates a vector density map on a vector network. vector,kernel density OnMenuCmd v.kernel Gaussian deviates surface GRASS module to produce a raster map layer of gaussian deviates whose mean and standard deviation can be expressed by the user. It uses a gaussian random number generator. raster,surface,random OnMenuCmd r.surf.gauss Plane Creates raster plane map given dip (inclination), aspect (azimuth) and one point. raster,elevation OnMenuCmd r.plane Random deviates surface Produces a raster map of uniform random deviates whose range can be expressed by the user. raster,surface,random OnMenuCmd r.surf.random Random surface with spatial dependence Generates random surface(s) with spatial dependence. raster,random,surface OnMenuCmd r.random.surface Interpolate surfaces Bilinear and bicubic from vector points Bicubic or bilinear spline interpolation with Tykhonov regularization. vector,surface,interpolation,LIDAR OnMenuCmd v.surf.bspline IDW from raster points Surface interpolation utility for raster map. raster,surface,interpolation,IDW OnMenuCmd r.surf.idw IDW from raster points (alternate method for sparse points) Surface generation program. raster,surface,interpolation,IDW OnMenuCmd r.surf.idw2 IDW from vector points Surface interpolation from vector point data by Inverse Distance Squared Weighting. vector,surface,interpolation,IDW OnMenuCmd v.surf.idw Raster contours Generates surface raster map from rasterized contours. raster,surface,interpolation OnMenuCmd r.surf.contour Regularized spline tension Spatial approximation and topographic analysis from given point or isoline data in vector format to floating point raster format using regularized spline with tension. vector,surface,interpolation,RST OnMenuCmd v.surf.rst Ordinary or block kriging Performs ordinary or block kriging. vector,raster,interpolation,kriging RunMenuCmd v.krige Fill NULL cells Fills no-data areas in raster maps using spline interpolation. raster,elevation,interpolation OnMenuCmd r.fillnulls Report and statistics Basic raster metadata Outputs basic information about a raster map. raster,metadata,history OnMenuCmd r.info Manage category information Manages category values and labels associated with user-specified raster map layers. raster,category OnMenuCmd r.category General statistics Generates area statistics for raster map layers. raster,statistics OnMenuCmd r.stats Quantiles for large data sets Compute quantiles using two passes. raster,algebra,statistics OnMenuCmd r.quantile Range of category values Prints terse list of category values found in a raster map layer. raster,metadata OnMenuCmd r.describe Sum area by raster map and category Reports statistics for raster maps. raster,statistics OnMenuCmd r.report Statistics for clumped cells Calculates the volume of data "clumps", and (optionally) produces a GRASS vector points map containing the calculated centroids of these clumps. raster,volume OnMenuCmd r.volume Total corrected area Prints estimation of surface area for raster map. raster,surface,statistics,area estimation OnMenuCmd r.surf.area Univariate raster statistics Calculates univariate statistics from the non-null cells of a raster map. raster,statistics OnMenuCmd r.univar Sample transects Outputs the raster map layer values lying on user-defined line(s). raster,profile OnMenuCmd r.profile Sample transects (bearing/distance) Outputs raster map layer values lying along user defined transect line(s). raster,transect OnMenuCmd r.transect Covariance/correlation Outputs a covariance/correlation matrix for user-specified raster map layer(s). raster,statistics OnMenuCmd r.covar Linear regression Calculates linear regression from two raster maps: y = a + b*x. raster,statistics OnMenuCmd r.regression.line Mutual category occurrences Tabulates the mutual occurrence (coincidence) of categories for two raster map layers. raster,statistics OnMenuCmd r.coin &Vector Develop vector map Create new vector map Create new empty vector map OnNewVector Edit vector map (non-interactively) Edits a vector map, allows adding, deleting and modifying selected vector features. vector,editing,geometry OnMenuCmd v.edit Convert object types Changes type of vector features. vector,geometry OnMenuCmd v.type Parallel lines Creates parallel line to input vector lines. vector,geometry OnMenuCmd v.parallel Dissolve boundaries Dissolves boundaries between adjacent areas sharing a common category number or attribute. vector,area,dissolve OnMenuCmd v.dissolve Create 3D vector over raster Converts vector map to 3D by sampling of elevation raster map. vector,geometry,sampling,3D OnMenuCmd v.drape Extrude 3D vector map Extrudes flat vector features to 3D with defined height. vector,geometry,3D OnMenuCmd v.extrude Create labels Creates paint labels for a vector map from attached attributes. vector,paint labels OnMenuCmd v.label Create optimally placed labels Create optimally placed labels for vector map(s) vector,paint labels OnMenuCmd v.label.sa Reposition vector map Performs an affine transformation (shift, scale and rotate, or GPCs) on vector map. vector,transformation OnMenuCmd v.transform Rectify vector map Rectifies a vector by computing a coordinate transformation for each object in the vector based on the control points. vector,rectify OnMenuCmd v.rectify Reproject vector map Re-projects a vector map from one location to the current location. vector,projection,transformation OnMenuCmd v.proj Support file maintenance Updates vector map metadata. vector,metadata OnMenuCmd v.support Topology maintenance Create or rebuild topology Creates topology for vector map. vector,geometry,topology OnMenuCmd v.build Rebuild topology on all vector maps Rebuilds topology on all vector maps in the current mapset. vector,topology OnMenuCmd v.build.all Build polylines Builds polylines from lines or boundaries. vector,geometry,topology OnMenuCmd v.build.polylines Split lines Splits vector lines to shorter segments. vector,geometry OnMenuCmd v.split Split polylines Creates points/segments from input vector lines and positions. vector,geometry OnMenuCmd v.segment Clean vector map Toolset for cleaning topology of vector map. vector,topology OnVectorCleaning v.clean Smooth or simplify Tool for vector based generalization. vector,generalization,simplification,smoothing,displacement,network generalization OnMenuCmd v.generalize Add centroids Adds missing centroids to closed boundaries. vector,centroid,area OnMenuCmd v.centroids Manage colors Color tables Creates/modifies the color table associated with a vector map. vector,color table OnMenuCmd v.colors Color rules Interactive management of vector color tables. RulesCmd vector,color table v.colors Export color table Exports the color table associated with a vector map. vector,color table,export OnMenuCmd v.colors.out Query vector map Query with coordinate(s) Queries a vector map at given locations. vector,position,querying OnMenuCmd v.what Query vector attribute data Prints vector map attributes. vector,database,attribute table OnMenuCmd v.db.select Feature selection Select by attributes Selects vector features from an existing vector map and creates a new vector map containing only the selected features. vector,extract OnMenuCmd v.extract Select by another map Selects features from vector map (A) by features from other vector map (B). vector,spatial query OnMenuCmd v.select Map type conversions Vector to raster Converts (rasterize) a vector map into a raster map. vector,raster,conversion,rasterization OnMenuCmd v.to.rast Vector to volume Converts a vector map (only points) into a 3D raster map. vector,volume,conversion OnMenuCmd v.to.rast3 2D vector to 3D vector Performs transformation of 2D vector features to 3D. vector,geometry,3D OnMenuCmd v.to.3d Sites to vector Converts a GRASS site_lists file into a vector map. vector,import,sites OnMenuCmd v.in.sites Buffer vectors Creates a buffer around vector features of given type. vector,geometry,buffer OnMenuCmd v.buffer Lidar analysis Detect edges Detects the object's edges from a LIDAR data set. vector,LIDAR,edges OnMenuCmd v.lidar.edgedetection Detect interiors Building contour determination and Region Growing algorithm for determining the building inside vector,LIDAR OnMenuCmd v.lidar.growing Correct and reclassify objects Correction of the v.lidar.growing output. It is the last of the three algorithms for LIDAR filtering. vector,LIDAR OnMenuCmd v.lidar.correction Linear referencing Create LRS Create Linear Reference System vector,LRS,networking OnMenuCmd v.lrs.create Create stationing Create stationing from input lines, and linear reference system vector,LRS,networking OnMenuCmd v.lrs.label Create points/segments Creates points/segments from input lines, linear reference system and positions read from stdin or a file. vector,LRS,networking OnMenuCmd v.lrs.segment Find line id and offset Finds line id and real km+offset for given points in vector map using linear reference system. vector,LRS,networking OnMenuCmd v.lrs.where Nearest features Finds the nearest element in vector map 'to' for elements in vector map 'from'. vector,database,attribute table OnMenuCmd v.distance Network analysis ` Network preparation Performs network maintenance. vector,network,maintenance OnMenuCmd v.net Allocate subnets Allocate subnets for nearest centers (direction from center). vector,network,allocation OnMenuCmd v.net.alloc Split net Splits net by cost isolines. vector,network,isolines OnMenuCmd v.net.iso Shortest path Finds shortest path on vector network. vector,network,shortest path OnMenuCmd v.net.path Shortest path for sets of features Computes shortest distance via the network between the given sets of features. vector,network,shortest path OnMenuCmd v.net.distance Shortest path using timetables Finds shortest path using timetables. vector,network,shortest path OnMenuCmd v.net.timetable Shortest path for all pairs Computes the shortest path between all pairs of nodes in the network. vector,network,shortest path OnMenuCmd v.net.allpairs Visibility network Visibility graph construction. vector,path,visibility OnMenuCmd v.net.visibility Bridges and articulation points Computes bridges and articulation points in the network. vector,network,articulation points OnMenuCmd v.net.bridge Maximum flow Computes the maximum flow between two sets of nodes in the network. vector,network,flow OnMenuCmd v.net.flow Vertex connectivity Computes vertex connectivity between two sets of nodes in the network. vector,network,connectivity OnMenuCmd v.net.connectivity Components Computes strongly and weakly connected components in the network. vector,network,components OnMenuCmd v.net.components Centrality Computes degree, centrality, betweeness, closeness and eigenvector centrality measures in the network. vector,network,centrality measures OnMenuCmd v.net.centrality Steiner tree Create Steiner tree for the network and given terminals vector,network,steiner tree OnMenuCmd v.net.steiner Minimum spanning tree Computes minimum spanning tree for the network. vector,network,spanning tree OnMenuCmd v.net.spanningtree Traveling salesman analysis Creates a cycle connecting given nodes (Traveling salesman problem). vector,network,salesman OnMenuCmd v.net.salesman Overlay vector maps Overlay vector maps Overlays two vector maps. vector,geometry OnMenuCmd v.overlay Patch vector maps Creates a new vector map by combining other vector maps. vector,geometry OnMenuCmd v.patch Manage categories Change or report categories Attaches, deletes or reports vector categories to map geometry. vector,category OnMenuCmd v.category Reclassify Changes vector category values for an existing vector map according to results of SQL queries or a value in attribute table column. vector,reclass,attributes OnMenuCmd v.reclass Update attributes Update area attributes from raster Calculates univariate statistics from a raster map based on vector polygon map and uploads statistics to new attribute columns. vector,raster,statistics OnMenuCmd v.rast.stats Update area attributes from vector Count points in areas, calculate statistics from point attributes. vector,database,attribute table OnMenuCmd v.vect.stats Update point attributes from areas Uploads vector values at positions of vector points to the table. vector,database,attribute table OnMenuCmd v.what.vect Update database values from vector Populates database values from vector features. vector,database,attribute table OnMenuCmd v.to.db Sample raster maps at point locations Uploads raster values at positions of vector points to the table. vector,raster,position,querying,attribute table OnMenuCmd v.what.rast Sample raster neighborhood around points Samples a raster map at vector point locations. vector,raster,resample OnMenuCmd v.sample Generate area for current region Creates a vector polygon from the current region extent. vector,geometry OnMenuCmd v.in.region Generate areas from points Convex hull Produces a convex hull for a given vector map. vector,geometry OnMenuCmd v.hull Delaunay triangles Creates a Delaunay triangulation from an input vector map containing points or centroids. vector,geometry,triangulation OnMenuCmd v.delaunay Voronoi diagram/Thiessen polygons Creates a Voronoi diagram in current region from an input vector map containing points or centroids. vector,geometry,triangulation OnMenuCmd v.voronoi Generate grid Creates a vector map of a user-defined grid. vector,geometry OnMenuCmd v.mkgrid Generate points Generate from database Creates new vector (points) map from database table containing coordinates. vector,import,database,points OnMenuCmd v.in.db Generate points along lines Creates points along input lines in new vector map with 2 layers. vector,geometry OnMenuCmd v.to.points Generate random points Generates randomly 2D/3D vector points map. vector,statistics,random OnMenuCmd v.random Perturb points Random location perturbations of vector points. vector,geometry,statistics OnMenuCmd v.perturb Remove outliers in point sets Removes outliers from vector point data. vector,statistics OnMenuCmd v.outlier Test/training point sets Randomly partition points into test/train sets. vector,statistics,points OnMenuCmd v.kcv Reports and statistics Basic vector metadata Outputs basic information about a vector map. vector,metadata,topology,extent,history,attribute columns OnMenuCmd v.info Classify attribute data Classifies attribute data, e.g. for thematic mapping vector,attributes,statistics OnMenuCmd v.class Report topology by category Reports geometry statistics for vector maps. vector,geometry,statistics OnMenuCmd v.report Univariate attribute statistics for points Calculates univariate statistics for attribute. vector,statistics OnMenuCmd v.univar Univariate statistics for attribute columns Calculates univariate statistics on selected table column for a GRASS vector map. vector,statistics OnMenuCmd v.db.univar Quadrat indices Indices for quadrat counts of sites lists. vector,statistics OnMenuCmd v.qcount Test normality Tests for normality for vector points. vector,statistics,points OnMenuCmd v.normal &Imagery Develop images and groups Create/edit group Creates, edits, and lists groups of imagery files. imagery,map management OnEditImageryGroups i.group Target group Targets an imagery group to a GRASS location and mapset. imagery,map management OnMenuCmd i.target Mosaic images Mosaics several images and extends colormap. raster,imagery,mosaicking OnMenuCmd i.image.mosaic Manage image colors Color balance for RGB Performs auto-balancing of colors for LANDSAT images. raster,imagery,colors OnMenuCmd i.landsat.rgb HIS to RGB Transforms raster maps from HIS (Hue-Intensity-Saturation) color space to RGB (Red-Green-Blue) color space. imagery,color transformation,RGB,HIS OnMenuCmd i.his.rgb RGB to HIS Transforms raster maps from RGB (Red-Green-Blue) color space to HIS (Hue-Intensity-Saturation) color space. imagery,color transformation,RGB,HIS OnMenuCmd i.rgb.his Rectify image or raster Rectifies an image by computing a coordinate transformation for each pixel in the image based on the control points. imagery,rectify OnMenuCmd i.rectify Histogram Generate histogram of image OnHistogram Spectral response Displays spectral response at user specified locations in group or images. imagery,raster,multispectral OnMenuCmd i.spectral Brovey sharpening Brovey transform to merge multispectral and high-res panchromatic channels imagery,fusion,Brovey OnMenuCmd i.fusion.brovey Classify image Clustering input for unsupervised classification Generates spectral signatures for land cover types in an image using a clustering algorithm. imagery,classification,signatures OnMenuCmd i.cluster Input for supervised MLC Generates statistics for i.maxlik from raster map. imagery,classification,supervised,MLC OnMenuCmd i.gensig Maximum likelihood classification (MLC) Classifies the cell spectral reflectances in imagery data. imagery,classification,MLC OnMenuCmd i.maxlik Interactive input for supervised classification Generates spectral signatures by allowing the user to outline training areas. imagery,classification,supervised OnIClass Input for supervised SMAP Generates statistics for i.smap from raster map. imagery,classification,supervised,SMAP OnMenuCmd i.gensigset Sequential maximum a posteriori classification (SMAP) Performs contextual image classification using sequential maximum a posteriori (SMAP) estimation. imagery,classification,supervised,SMAP OnMenuCmd i.smap Filter image Edge detection Zero-crossing "edge detection" raster function for image processing. imagery,edges OnMenuCmd i.zc Matrix/convolving filter Performs raster map matrix filter. raster,algebra,statistics OnMenuCmd r.mfilter Transform image Canonical correlation Canonical components analysis (cca) program for image processing. imagery,statistics,CCA OnMenuCmd i.cca Principal components Principal components analysis (PCA) for image processing. imagery,image transformation,PCA OnMenuCmd i.pca Fast Fourier Fast Fourier Transform (FFT) for image processing. imagery,FFT OnMenuCmd i.fft Inverse Fast Fourier Inverse Fast Fourier Transform (IFFT) for image processing. imagery,FFT OnMenuCmd i.ifft Satellite images tools Aster DN to radiance/reflectance Calculates Top of Atmosphere Radiance/Reflectance/Brightness Temperature from ASTER DN. imagery,Terra-ASTER,DN,radiance,reflectance,brightness temperature OnMenuCmd i.aster.toar Landsat DN to radiance/reflectance Calculates top-of-atmosphere radiance or reflectance and temperature for Landsat MSS/TM/ETM+. imagery,landsat,top-of-atmosphere reflectance,dos-type simple atmospheric correction OnMenuCmd i.landsat.toar Landsat cloud cover assessment Performs Landsat TM/ETM+ Automatic Cloud Cover Assessment (ACCA). imagery,landsat,acca OnMenuCmd i.landsat.acca Modis quality control Extracts quality control parameters from Modis QC layers. QC,Quality Control,Surface Reflectance,Land Surface Temperature,Vegetation,Modis OnMenuCmd i.modis.qc Atmospheric correction Performs atmospheric correction using the 6S algorithm. imagery,atmospheric correction OnMenuCmd i.atcorr LatLong map Creates a latitude/longitude map. imagery,latitude,longitude,projection OnMenuCmd i.latlong Sunshine hours Creates a sunshine hours map. sunshine,hours,daytime OnMenuCmd i.sunhours Satellite images products Vegetation indices Calculates different types of vegetation indices. imagery,vegetation index,biophysical parameters OnMenuCmd i.vi Tasseled cap vegetation index Performs Tasseled Cap (Kauth Thomas) transformation for LANDSAT-TM data. imagery,transformation OnMenuCmd i.tasscap Albedo Computes broad band albedo from surface reflectance. imagery,albedo,surface reflectance OnMenuCmd i.albedo Emissivity Computes emissivity from NDVI, generic method for spares land. emissivity,land flux,energy balance OnMenuCmd i.emissivity Biomass growth Computes biomass growth, precursor of crop yield calculation. imagery,biomass,fpar,yield OnMenuCmd i.biomass Evapotranspiration calculation Instantaneaous Net Radiation Net radiation approximation (Bastiaanssen, 1995). imagery,energy balance,net radiation,SEBAL OnMenuCmd i.eb.netrad Soil heat flux Soil heat flux approximation (Bastiaanssen, 1995). imagery,energy balance,soil heat flux,SEBAL OnMenuCmd i.eb.soilheatflux Sensible heat flux Computes sensible heat flux iteration SEBAL 01. imagery,energy balance,soil moisture,evaporative fraction,SEBAL OnMenuCmd i.eb.h_sebal01 Evaporative fraction Computes evaporative fraction (Bastiaanssen, 1995) and root zone soil moisture (Makin, Molden and Bastiaanssen, 2001). imagery,energy balance,soil moisture,evaporative fraction,SEBAL OnMenuCmd i.eb.evapfr Actual Evapotranspiration Actual evapotranspiration for diurnal period (Bastiaanssen, 1995). imagery,energy balance,actual evapotranspiration,SEBAL OnMenuCmd i.eb.eta Temporal integration of ETa Computes temporal integration of satellite ET actual (ETa) following the daily ET reference (ETo) from meteorological station(s). imagery,evapotranspiration OnMenuCmd i.evapo.time Hargreaves methods Evapotranspiration Computes evapotranspiration calculation modified or original Hargreaves formulation, 2001. imagery,evapotranspiration OnMenuCmd i.evapo.mh Penman-Monteith Evapotranspiration Computes potential evapotranspiration calculation with hourly Penman-Monteith. imagery,evapotranspiration OnMenuCmd i.evapo.pm Priestley-Taylor Evapotranspiration Computes evapotranspiration calculation Prestley and Taylor formulation, 1972. imagery,evapotranspiration OnMenuCmd i.evapo.pt Report and statistics Bit pattern comparison Compares bit patterns with a raster map. raster,algebra OnMenuCmd r.bitpattern Kappa analysis Calculate error matrix and kappa parameter for accuracy assessment of classification result. raster,statistics OnMenuCmd r.kappa OIF for LandSat TM Calculates Optimum-Index-Factor table for LANDSAT TM bands 1-5, & 7 raster,imagery,statistics OnMenuCmd i.oif V&olumes Develop volumes Manage 3D NULL values Explicitly create the 3D NULL-value bitmap file. raster3d,voxel OnMenuCmd r3.null Manage timestamp Print/add/remove a timestamp for a 3D raster map raster3d,voxel OnMenuCmd r3.timestamp Map type conversions Volume to raster series Converts 3D raster maps to 2D raster maps raster3d,raster,voxel OnMenuCmd r3.to.rast 3D color tables Creates/modifies the color table associated with a 3D raster map. raster3d,color table OnMenuCmd r3.colors Export 3D color table Exports the color table associated with a 3D raster map. raster3d,color table,export OnMenuCmd r3.colors.out 3D Mask Establishes the current working 3D raster mask. raster3d,voxel OnMenuCmd r3.mask Volume calculator 3D raster map calculator. raster,algebra OnMapCalculator r3.mapcalc Cross section Creates cross section 2D raster map from 3D raster map based on 2D elevation map raster3d,raster,voxel OnMenuCmd r3.cross.rast Groundwater modeling Numerical calculation program for transient, confined groundwater flow in three dimensions raster3d,voxel,hydrology,groundwater,numeric,simulation OnMenuCmd r3.gwflow Interpolate volume from points Interpolates point data to a 3D raster map using regularized spline with tension (RST) algorithm. vector,surface,interpolation,RST OnMenuCmd v.vol.rst Report and Statistics Basic volume metadata Outputs basic information about a user-specified 3D raster map layer. raster3d,voxel OnMenuCmd r3.info Voxel statistics Generates volume statistics for 3D raster maps. raster3d,statistics OnMenuCmd r3.stats Univariate statistics for volumes Calculates univariate statistics from the non-null 3d cells of a raster3d map. raster3d,statistics OnMenuCmd r3.univar &Database Database information List databases List all databases for a given driver and location. database,SQL OnMenuCmd db.databases List drivers Lists all database drivers. database,drivers OnMenuCmd db.drivers List tables Lists all tables for a given database. database,attribute table OnMenuCmd db.tables Describe table Describes a table in detail. database,attribute table OnMenuCmd db.describe List columns List all columns for a given table. database,attribute table OnMenuCmd db.columns Manage databases Connect Prints/sets general DB connection for current mapset. database,attribute table,connection settings OnMenuCmd db.connect Login Sets user/password for DB driver/database. database,connection settings OnMenuCmd db.login Create database Creates an empty database. database,SQL OnMenuCmd db.createdb Drop database Removes a database. database,SQL OnMenuCmd db.dropdb Drop table Drops an attribute table. database,attribute table OnMenuCmd db.droptable Copy table Copy a table. database,attribute table,SQL OnMenuCmd db.copy Drop column Drops a column from selected attribute table. database,attribute table OnMenuCmd db.dropcolumn Test Test database driver, database must exist and set by db.connect. database,attribute table OnMenuCmd db.test Query Query any table Selects data from attribute table (performs SQL query statement(s)). database,attribute table,SQL OnMenuCmd db.select Query vector attribute data Prints vector map attributes. vector,database,attribute table OnMenuCmd v.db.select SQL statement Executes any SQL statement. database,attribute table,SQL OnMenuCmd db.execute Vector database connections New table Creates and connects a new attribute table to a given layer of an existing vector map. vector,database,attribute table OnMenuCmd v.db.addtable Remove table Removes existing attribute table of a vector map. vector,database,attribute table OnMenuCmd v.db.droptable Join table Allows to join a table to a vector map table. vector,database,attribute table OnMenuCmd v.db.join Add columns Adds one or more columns to the attribute table connected to a given vector map. vector,database,attribute table OnMenuCmd v.db.addcolumn Drop column Drops a column from the attribute table connected to a given vector map. vector,database,attribute table OnMenuCmd v.db.dropcolumn Rename column Renames a column in the attribute table connected to a given vector map. vector,database,attribute table OnMenuCmd v.db.renamecolumn Change values Allows to update a column in the attribute table connected to a vector map. vector,database,attribute table OnMenuCmd v.db.update Drop row Removes a vector feature from a vector map through attribute selection. vector,database,attribute table OnMenuCmd v.db.droprow Reconnect vectors to database Reconnects vectors to a new database. vector,database,attribute table OnMenuCmd v.db.reconnect.all Set vector map - database connection Prints/sets DB connection for a vector map to attribute table. vector,database,attribute table OnMenuCmd v.db.connect &Help GRASS help Display the HTML man pages of GRASS GIS general,manual,help RunMenuCmd g.manual -i ID_HELP GUI help Display the HTML man pages of GRASS GIS general,manual,help RunMenuCmd g.manual entry=wxGUI About GRASS GIS About GRASS GIS OnAboutGRASS ID_ABOUT