---

GRASS 6.4.0 Command list

10 September 2009

Command types:

• d.* - display commands
• db.* - database commands
• g.* - general commands
• i.* - imagery commands
• m.* - miscellanous commands
• ps.* - PostScript commands
• r.* - raster commands
• r3.* - raster3D commands
• v.* - vector commands
• wxGUI - GUI frontend (wxPython)
• gis.m - GUI frontend (Tcl/Tk)
• NVIZ - n-dimensional visualization suite
• xganim - raster map slideshow viewer

Display commands:

• d.ask: Prompts the user to select a GRASS data base file from among files displayed in a menu on the graphics monitor.
• d.barscale: Displays a barscale on the graphics monitor.
• d.colorlist: Output a list of all available display colors with a configurable separator (default is comma).
• d.colors: Allows the user to interactively change the color table of a raster map layer displayed on the graphics monitor.
• d.colortable: Displays the color table associated with a raster map layer.
• d.correlate: Prints a graph of the correlation between data layers (in pairs).
• d.erase: Erase the contents of the active display frame with user defined color.
• d.extend: Sets window region so that all currently displayed raster and vector maps can be shown in a monitor.
• d.extract: Selects and extracts vectors with mouse into new vector map.
• d.font.freetype: Selects the font in which text will be displayed on the user's graphics monitor.
• d.font: Selects the font in which text will be displayed on the user's graphics monitor.
• d.frame: Manages display frames on the user's graphics monitor.
• d.geodesic: Displays a geodesic line, tracing the shortest distance between two geographic points along a great circle, in a longitude/latitude data set.
• d.graph: Program for generating and displaying simple graphics on the display monitor.
• d.grid: Overlays a user-specified grid in the active display frame on the graphics monitor.
• d.his: Displays the result obtained by combining hue, intensity, and saturation (his) values from user-specified input raster map layers.
• d.histogram: Displays a histogram in the form of a pie or bar chart for a user-specified raster map.
• d.info: Display information about the active display monitor.
• d.labels: Displays text labels (created with v.label) to the active frame on the graphics monitor.
• d.legend: Displays a legend for a raster map in the active frame of the graphics monitor.
• d.linegraph: Generates and displays simple line graphs in the active graphics monitor display frame.
• d.m: Display manager for GRASS.
• d.mapgraph: Generates and displays simple graphics on map layers drawn in the active graphics monitor display frame.
• d.measure: Measures the lengths and areas of features drawn by the user in the active display frame on the graphics monitor.
• d.menu: Creates and displays a menu within the active frame on the graphics monitor.
• d.mon: To establish and control use of a graphics display monitor.
• d.monsize: Selects/starts specified monitor at specified size.
• d.mvmon: Moves displayed maps to another monitor.
• d.nviz: Creates fly-through script to run in NVIZ.
• d.out.file: Saves the contents of the active display monitor to a graphics file.
• d.out.gpsdrive: Export display monitor to a GpsDrive compatible backdrop image.
• d.out.png: Saves active display monitor to PNG file in home directory.
• d.path: Finds shortest path for selected starting and ending node.
  Vector → Network analysis → Display shortest route (requires XTerm)
• d.polar: Draws polar diagram of angle map such as aspect or flow directions.
• d.profile: Interactive profile plotting utility with optional output.
• d.rast.arrow: Draws arrows representing cell aspect direction for a raster map containing aspect data.
• d.rast.edit: Interactively edit cell values in a raster map.
  Raster → Change category values and labels → Interactively edit category values
• d.rast.leg: Displays a raster map and its legend on a graphics window.
• d.rast.num: Overlays cell category values on a raster map layer displayed to the graphics monitor.
• d.rast: Displays and overlays raster map layers in the active display frame on the graphics monitor.
• d.redraw: Redraws the current display frame in the GRASS monitor.
• d.resize: Resizes active display monitor.
• d.rgb: Displays three user-specified raster map layers as red, green, and blue overlays in the active graphics frame.
• d.rhumbline: Displays the rhumbline joining two user-specified points, in the active frame on the user's graphics monitor.
• d.save: Creates a list of commands for recreating screen graphics.
• d.shadedmap: Drapes a color raster over a shaded relief map using d.his.
• d.slide.show: Slide show of GRASS raster/vector maps.
• d.split.frame: Split the display into subframes.
• d.split: Divides active display into two frames & displays maps/executes commands in each frame.
• d.text.freetype: Draws text in the active display frame on the graphics monitor using the current font.
• d.text: Draws text in the active display frame on the graphics monitor using the current font.
• d.thematic.area: Displays a thematic vector area map in the active frame on the graphics monitor.
• d.title: Create a TITLE for a raster map in a form suitable for display with d.text.
• d.vect.chart: Displays charts of vector data in the active frame on the graphics monitor.
• d.vect.thematic: Displays thematic vector map.
• d.vect: Displays vector data in the active frame on the graphics monitor.
• d.what.rast: Allows the user to interactively query the category contents of multiple raster map layers at user specified locations within the current geographic region.
• d.what.vect: Allows the user to interactively query a vector map layer at user-selected locations within the current geographic region.
• d.where: Identifies the geographic coordinates associated with point locations in the active frame on the graphics monitor.
• d.zoom: Allows the user to change the current geographic region settings interactively, with a mouse.

Database management commands:

• db.columns: List all columns for a given table.
  Database → Database information → List columns
• db.connect: Prints/sets general DB connection for current mapset and exits.
  Database → Manage databases → Connect
• db.copy: Copy a table.
  Database → Manage databases → Copy table
• db.describe: Describes a table in detail.
  Database → Database information → Describe table
• db.drivers: List all database drivers.
  Database → Database information → List drivers
• db.dropcol: Drops a column from selected attribute table.
• db.droptable: Drops an attribute table.
  Database → Manage databases → Remove table
• db.execute: Executes any SQL statement.
  Database → Query → SQL statement
• db.in.ogr: Imports attribute tables in various formats.
  File → Import database table → Multiple import formats using OGR
• db.login: Sets user/password for driver/database.
  Database → Manage databases → Login
• db.out.ogr: Exports attribute tables into various formats.
  File → Export database table → Multiple export formats using OGR
• db.select: Selects data from table.
  Database → Query → Query any table
• db.tables: Lists all tables for a given database.
  Database → Database information → List tables
• db.test: Test database driver, database must exist and set by db.connect.
  Database → Manage databases → Test

General GIS management commands:

• g.access: Controls access to the current mapset for other users on the system.
  Config → GRASS working environment → User 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.
  File → Manage maps and volumes → Copy
• g.dirseps: Internal GRASS utility for converting directory separator characters.
• 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.
  Config → GRASS working environment → Change settings
• g.gui: Launches a GRASS graphical user interface (GUI) session.
  Config → GRASS working environment → Change default GUI
• g.list: Lists available GRASS data base files of the user-specified data type to standard output.
  File → Manage maps and volumes → List
• g.manual: Display the HTML man pages of GRASS.
  Help → GRASS help
• g.mapset: Change current mapset.
  Config → GRASS working environment → Change working environment
• 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.message: Prints a message, warning, or fatal error the GRASS way.
• g.mkfontcap: Generates the font configuration file by scanning various directories for fonts.
• g.mlist: Lists available GRASS data base files of the user-specified data type to standard output.
  File → Manage maps and volumes → List filtered
• g.mremove: Removes data base element files from the user's current mapset.
  File → Manage maps and volumes → Delete filtered
• g.parser: Full parser support for GRASS scripts.
• g.pnmcomp: Overlays multiple PPM image files.
• g.proj: Converts co-ordinate system descriptions (i.e. projection information) between various formats (including GRASS format).
  Config → Manage projections → Manage projections
• g.region: Manages the boundary definitions for the geographic region.
  Config → Region → Set or Display region
• g.remove: Removes data base element files from the user's current mapset.
  File → Manage maps and volumes → Delete
• g.rename: Renames data base element files in the user's current mapset.
  File → Manage maps and volumes → Rename
• g.setproj: Interactively reset the location's projection settings.
  Config → Manage projections → Projection for current location
• 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.
  Config → GRASS working environment → Version

Imagery commands:

• i.atcorr: Performs atmospheric correction using the 6S algorithm.
  Imagery → Atmospheric correction
• i.cca: Canonical components analysis (cca) program for image processing.
  Imagery → Transform image → Canonical correlation
• i.class: Generates spectral signatures for an image by allowing the user to outline regions of interest.
  Imagery → Classify image → Interactive input for supervised classification (requires Xterm)
• i.cluster: Generates spectral signatures for land cover types in an image using a clustering algorithm.
  Imagery → Classify image → Clustering input for unsupervised classification
• i.fft: Fast Fourier Transform (FFT) for image processing.
  Imagery → Transform image → Fast Fourier
• i.fusion.brovey: Brovey transform to merge multispectral and high-res panchromatic channels.
  Imagery → Brovey sharpening
• i.gensig: Generates statistics for i.maxlik from raster map.
  Imagery → Classify image → Input for supervised MLC
• i.gensigset: Generates statistics for i.smap from raster map.
  Imagery → Classify image → Input for supervised SMAP
• i.group: Creates, edits, and lists groups and subgroups of imagery files.
  Imagery → Develop images and groups → Create/edit group
• i.his.rgb: Transforms raster maps from HIS (Hue-Intensity-Saturation) color space to RGB (Red-Green-Blue) color space.
  Imagery → Manage image colors → HIS to RGB
• i.ifft: Inverse Fast Fourier Transform (IFFT) for image processing.
  Imagery → Transform image → Inverse Fast Fourier
• i.image.mosaic: Mosaics up to 4 images and extends colormap; creates map *.mosaic.
  Imagery → Develop images and groups → Mosaic images
• i.in.spotvgt: Import of SPOT VGT NDVI file into a raster map.
  File → Import raster map → SPOT NDVI import
• i.landsat.rgb: Performs auto-balancing of colors for LANDSAT images.
  Imagery → Manage image colors → Color balance for RGB
• i.maxlik: Classifies the cell spectral reflectances in imagery data.
  Imagery → Classify image → Maximum likelihood classification (MLC)
• i.oif: Calculates Optimum-Index-Factor table for LANDSAT TM bands 1-5, & 7.
  Imagery → Report and statistics → OIF for LandSat TM
• i.ortho.photo: Menu driver for the photo imagery programs.
  Imagery → Ortho photo rectification (requires Xterm)
• i.pca: Principal components analysis (pca) program for image processing.
  Imagery → Transform image → Principal components
• i.points: Mark ground control points on image to be rectified.
• i.rectify: Rectifies an image by computing a coordinate transformation for each pixel in the image based on the control points.
  Imagery → Rectify image or raster
• i.rgb.his: Transforms raster maps from RGB (Red-Green-Blue) color space to HIS (Hue-Intensity-Saturation) color space.
  Imagery → Manage image colors → RGB to HIS
• i.smap: Performs contextual image classification using sequential maximum a posteriori (SMAP) estimation.
  Imagery → Classify image → Sequential maximum a posteriori classification (SMAP)
• i.spectral: Displays spectral response at user specified locations in group or images.
  Imagery → Spectral response
• i.target: Targets an imagery group to a GRASS location and mapset.
  Imagery → Develop images and groups → Target group
• i.tasscap: Tasseled Cap (Kauth Thomas) transformation for LANDSAT-TM data.
  Imagery → Tasseled cap vegetation index
• i.vpoints: Set registration points for an imagery group from a vector map or keyboard entry.
• i.zc: Zero-crossing 'edge detection' raster function for image processing.
  Imagery → Filter image → Edge detection

Imagery photo.* commands:

• photo.2image: Marks fiducial or reseau points on an image to be ortho-rectified and then computes the image-to-photo coordinate transformation parameters.
• photo.2target: Create control points on an image to be ortho-rectified.
• photo.camera: Creates or modifies entries in a camera reference file.
• photo.elev: Selects target elevation model for ortho-rectification.
• photo.init: Creates or modifies entries in a camera initial exposure station file for imagery group referenced by a sub-block.
• photo.rectify: Rectifies an image by using the image to photo coordinate transformation matrix created by photo.2image and the rectification parameters created by photo.2target.
• photo.target: Selects target location and mapset for ortho-rectification.

Miscellaneous tools:

• m.cogo: A simple utility for converting bearing and distance measurements to coordinates and vice versa.
  File → Bearing/distance to coordinates
• m.proj: Convert coordinates from one projection to another (cs2cs frontend).
  Config → Manage projections → Convert coordinates

PostScript commands:

• ps.map: Hardcopy PostScript map output utility.
  File → Postscript plot

Raster commands:

• r.average: Finds the average of values in a cover map within areas assigned the same category value in a user-specified base map.
• r.basins.fill: Generates a raster map layer showing watershed subbasins.
  Raster → Hydrologic modeling → Watershed subbasins
• r.bilinear: Bilinear interpolation utility for raster map layers.
  Raster → Interpolate surfaces → Bilinear from raster points
• r.bitpattern: Compares bit patterns with a raster map.
  Imagery → Report and statistics → Bit pattern comparison
• r.blend: Blends color components of two raster maps by a given ratio.
  Raster → Manage colors → Blend 2 color rasters
• r.buffer: Creates a raster map layer showing buffer zones surrounding cells that contain non-NULL category values.
  Raster → Buffer rasters
• r.carve: Takes vector stream data, transforms it to raster and subtracts depth from the output DEM.
  Raster → Hydrologic modeling → Carve stream channels
• r.category: Manages category values and labels associated with user-specified raster map layers.
  Raster → Report and statistics → Manage category information
• r.circle: Creates a raster map containing concentric rings around a given point.
  Raster → Concentric circles
• r.clump: Recategorizes data in a raster map by grouping cells that form physically discrete areas into unique categories.
  Raster → Transform features → Clump
• r.coin: Tabulates the mutual occurrence (coincidence) of categories for two raster map layers.
  Raster → Report and statistics → Mutual category occurrences
• r.colors.stddev: Set color rules based on stddev from a map's mean value.
  Raster → Manage colors → Color tables (stddev)
• r.colors: Creates/modifies the color table associated with a raster map layer.
  Raster → Manage colors → Color rules
• r.composite: Combines red, green and blue raster maps into a single composite raster map.
  Raster → Manage colors → Create RGB
• r.compress: Compresses and decompresses raster maps.
  Raster → Develop raster map → Compress/decompress
• r.contour: Produces a vector map of specified contours from a raster map.
  Raster → Generate contour lines
• r.cost: 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 → Terrain analysis → Cost surface
• r.covar: Outputs a covariance/correlation matrix for user-specified raster map layer(s).
  Raster → Report and statistics → Covariance/correlation
• r.cross: Creates a cross product of the category values from multiple raster map layers.
  Raster → Overlay rasters → Cross product
• r.describe: Prints terse list of category values found in a raster map layer.
  Raster → Report and statistics → Range of category values
• r.digit: Interactive tool used to draw and save vector features on a graphics monitor using a pointing device (mouse) and save to a raster map.
  Raster → Develop raster map → Digitize raster (requires XTerm)
• r.distance: Locates the closest points between objects in two raster maps.
  Raster → Closest points
• r.drain: Traces a flow through an elevation model on a raster map.
  Raster → Terrain analysis → Least cost route or flow
• r.external: Link GDAL supported raster file to a binary raster map layer.
  File → Import raster map → Link to GDAL
• r.fill.dir: Filters and generates a depressionless elevation map and a flow direction map from a given elevation layer.
  Raster → Hydrologic modeling → Depressionless map and flowlines
• r.fillnulls: Fills no-data areas in raster maps using v.surf.rst splines interpolation.
  Raster → Interpolate surfaces → Fill NULL cells
• r.flow: Construction of slope curves (flowlines), flowpath lengths, and flowline densities (upslope areas) from a raster digital elevation model (DEM).
  Raster → Hydrologic modeling → Flow lines
• r.grow.distance: Generates a raster map layer of distance to features in input layer.
  Raster → Terrain analysis → Distance to features
• r.grow: Generates a raster map layer with contiguous areas grown by one cell.
  Raster → Transform features → Grow
• r.gwflow: Numerical calculation program for transient, confined and unconfined groundwater flow in two dimensions.
• r.his: Generates red, green and blue raster map layers combining hue, intensity and saturation (HIS) values from user-specified input raster map layers.
  Raster → Manage colors → RGB to HIS
• r.horizon: Horizon angle computation from a digital elevation model.
  Raster → Terrain analysis → Horizon angle
• r.in.arc: Converts an ESRI ARC/INFO ascii raster file (GRID) into a (binary) raster map layer.
  File → Import raster map → ESRI ASCII grid import
• r.in.ascii: Converts ASCII raster file to binary raster map layer.
  File → Import raster map → ASCII grid import
• r.in.aster: Georeference, rectify and import Terra-ASTER imagery and relative DEM's using gdalwarp.
  File → Import raster map → Terra ASTER HDF import
• r.in.bin: Import a binary raster file into a GRASS raster map layer.
  File → Import raster map → Binary file import
• r.in.gdal: Import GDAL supported raster file into a binary raster map layer.
  File → Import raster map → Import raster data using GDAL
• r.in.gridatb: Imports GRIDATB.FOR map file (TOPMODEL) into GRASS raster map.
  File → Import raster map → GRIDATB.FOR import
• r.in.mat: Imports a binary MAT-File(v4) to a GRASS raster.
  File → Import raster map → MAT-File (v.4) import
• r.in.poly: Creates raster maps from ASCII polygon/line/point data files.
  File → Import raster map → ASCII polygons and lines import
• r.in.srtm: Import SRTM HGT files into GRASS.
  File → Import raster map → SRTM HGT import
• r.in.wms: Downloads and imports data from WMS servers.
• r.in.xyz: Create a raster map from an assemblage of many coordinates using univariate statistics.
  File → Import raster map → Aggregate ASCII xyz import
• r.info: Output basic information about a raster map layer.
  Raster → Report and statistics → Basic raster metadata
• r.kappa: Calculate error matrix and kappa parameter for accuracy assessment of classification result.
  Imagery → Report and statistics → Kappa analysis
• r.lake: Fills lake from seed at given level.
  Raster → Hydrologic modeling → Fill lake
• r.le.patch: Calculates attribute, patch size, core (interior) size, shape, fractal dimension, and perimeter measures for sets of patches in a landscape.
  Raster → Landscape structure modeling → Analyze patches
• r.le.pixel: Contains a set of measures for attributes, diversity, texture, juxtaposition, and edge.
  Raster → Landscape structure modeling → Analyze landscape
• r.le.setup: Interactive tool used to setup the sampling and analysis framework that will be used by the other r.le programs.
  Raster → Landscape structure modeling → Set up (requires XTerm)
• r.le.trace: Displays the boundary of each r.le patch and shows how the boundary is traced, displays the attribute, size, perimeter and shape indices for each patch and saves the data in an output file.
  Raster → Landscape structure modeling → Output
• r.li.cwed: Calculates contrast weighted edge density index on a raster map.
  Raster → Landscape patch analysis → Contrast weighted edge density
• r.li.dominance: Calculates dominance's diversity index on a raster map.
  Raster → Landscape patch analysis → Dominance's diversity
• r.li.edgedensity: Calculates edge density index on a raster map, using a 4 neighbour algorithm.
  Raster → Landscape patch analysis → Edge density
• r.li.mpa: Calculates mean pixel attribute index on a raster map.
• r.li.mps: Calculates mean patch size index on a raster map, using a 4 neighbour algorithm.
  Raster → Landscape patch analysis → Patch area mean
• r.li.padcv: Calculates coefficient of variation of patch area on a raster map.
  Raster → Landscape patch analysis → Patch area Coeff Var
• r.li.padrange: Calculates range of patch area size on a raster map.
  Raster → Landscape patch analysis → Patch area range
• r.li.padsd: Calculates standard deviation of patch area a raster map.
  Raster → Landscape patch analysis → Patch area Std Dev
• r.li.patchdensity: Calculates patch density index on a raster map, using a 4 neighbour algorithm.
  Raster → Landscape patch analysis → Patch density
• r.li.patchnum: Calculates patch number index on a raster map, using a 4 neighbour algorithm.
  Raster → Landscape patch analysis → Patch number
• r.li.richness: Calculates dominance's diversity index on a raster map.
  Raster → Landscape patch analysis → Richness
• r.li.setup: Configuration editor for r.li.'index'.
  Raster → Landscape patch analysis → Set up sampling and analysis framework
• r.li.shannon: Calculates Shannon's diversity index on a raster map.
  Raster → Landscape patch analysis → Shannon's diversity
• r.li.shape: Calculates shape index on a raster map.
  Raster → Landscape patch analysis → Shape index
• r.li.simpson: Calculates Simpson's diversity index on a raster map.
  Raster → Landscape patch analysis → Simpson's diversity
• r.los: Line-of-sight raster analysis program.
  Raster → Terrain analysis → Visibility
• r.mapcalc: Performs arithmetic on raster map layers.
• r.mapcalculator: Calculate new raster map from a r.mapcalc expression.
• r.mask: Create a MASK for limiting raster operation.
  Raster → Mask
• r.median: Finds the median of values in a cover map within areas assigned the same category value in a user-specified base map.
• r.mfilter: Raster map matrix filter.
• r.mfilter.fp: Raster map matrix filter.
  Imagery → Filter image → Matrix/convolving filter
• r.mode: Finds the mode of values in a cover map within areas assigned the same category value in a user-specified base map.
• r.neighbors: 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 → Neighborhood analysis → Moving window
• r.null: Manages NULL-values of given raster map.
  Raster → Develop raster map → Manage NULL values
• r.out.arc: Converts a raster map layer into an ESRI ARCGRID file.
  File → Export raster map → ESRI ASCII grid export
• r.out.ascii: Converts a raster map layer into an ASCII text file.
  File → Export raster map → ASCII grid export
• r.out.bin: Exports a GRASS raster to a binary array.
  File → Export raster map → Binary export
• r.out.gdal: Exports GRASS raster maps into GDAL supported formats.
  File → Export raster map → Multiple export formats using GDAL
• r.out.gdal.sh: Exports GRASS raster into GDAL supported formats.
• r.out.gridatb: Exports GRASS raster map to GRIDATB.FOR map file (TOPMODEL).
  File → Export raster map → GRIDATB.FOR export
• r.out.mat: Exports a GRASS raster to a binary MAT-File.
  File → Export raster map → MAT-File (v.4) export
• r.out.mpeg: Raster File Series to MPEG Conversion Program.
  File → Export raster map → MPEG-1 export
• r.out.png: Export GRASS raster as non-georeferenced PNG image format.
  File → Export raster map → PNG export
• r.out.pov: Converts a raster map layer into a height-field file for POVRAY.
  File → Export raster map → POV-Ray export
• r.out.ppm: Converts a GRASS raster map to a PPM image file at the pixel resolution of the currently defined region.
  File → Export raster map → PPM export
• r.out.ppm3: Converts 3 GRASS raster layers (R,G,B) to a PPM image file at the pixel resolution of the CURRENTLY DEFINED REGION.
  File → Export raster map → PPM from RGB export
• r.out.tiff: Exports a GRASS raster map to a 8/24bit TIFF image file at the pixel resolution of the currently defined region.
  File → Export raster map → TIFF export
• r.out.vrml: Export a raster map to the Virtual Reality Modeling Language (VRML).
  File → Export raster map → VRML export
• r.out.vtk: Converts raster maps into the VTK-Ascii format.
  File → Export raster map → VTK export
• r.out.xyz: Export a raster map to a text file as x,y,z values based on cell centers.
  File → Export raster map → ASCII x,y,z export
• r.param.scale: Extracts terrain parameters from a DEM.
  Raster → Terrain analysis → Terrain parameters
• r.patch: 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 → Overlay rasters → Patch raster maps
• r.plane: Creates raster plane map given dip (inclination), aspect (azimuth) and one point.
  Raster → Generate surfaces → Plane
• r.profile: Outputs the raster map layer values lying on user-defined line(s).
  Raster → Report and statistics → Sample transects
• r.proj: Re-projects a raster map from one location to the current location.
  Raster → Develop raster map → Reproject raster
• r.quant: Produces the quantization file for a floating-point map.
  Raster → Develop raster map → Quantization
• r.quantile: Compute quantiles using two passes.
  Raster → Report and statistics → Quantiles for large data sets
• r.random.cells: Generates random cell values with spatial dependence.
  Raster → Generate random cells → Random cells
• r.random.surface: Generates random surface(s) with spatial dependence.
  Raster → Generate surfaces → Random surface with spatial dependence
• r.random: Creates a raster map layer and vector point map containing randomly located points.
  Raster → Generate random cells → Random cells and vector points
• r.reclass.area: Reclasses a raster map greater or less than user specified area size (in hectares).
  Raster → Change category values and labels → Reclassify by size
• r.reclass: Creates a new map layer whose category values are based upon a reclassification of the categories in an existing raster map layer.
  Raster → Change category values and labels → Reclassify
• r.recode: Recodes categorical raster maps.
  Raster → Change category values and labels → Recode interactively
• r.region: Sets the boundary definitions for a raster map.
  Raster → Develop raster map → Region boundaries
• r.regression.line: Calculates linear regression from two raster maps: y = a + b*x.
  Raster → Report and statistics → Linear regression
• r.report: Reports statistics for raster map layers.
  Raster → Report and statistics → Sum area by raster map and category
• r.resamp.interp: Resamples raster map layers to a finer grid using interpolation.
  Raster → Develop raster map → Resample using multiple methods
• r.resamp.rst: 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 → Develop raster map → Resample using spline tension
• r.resamp.stats: Resamples raster map layers to a coarser grid using aggregation.
  Raster → Develop raster map → Resample using aggregate statistics
• r.resample: GRASS raster map layer data resampling capability.
  Raster → Develop raster map → Resample using nearest neighbor
• r.rescale.eq: Rescales histogram equalized the range of category values in a raster map layer.
  Raster → Change category values and labels → Rescale with histogram
• r.rescale: Rescales the range of category values in a raster map layer.
  Raster → Change category values and labels → Rescale
• r.ros: Generates three, or four raster map layers showing 1) the base (perpendicular) rate of spread (ROS), 2) the maximum (forward) ROS, 3) the direction of the maximum ROS, and optionally 4) the maximum potential spotting distance.
  Raster → Wildfire modeling → Rate of spread
• r.series: Makes each output cell value a function of the values assigned to the corresponding cells in the input raster map layers.
  Raster → Overlay rasters → Raster series
• r.shaded.relief: Creates shaded relief map from an elevation map (DEM).
  Raster → Terrain analysis → Shaded relief
• r.sim.sediment: Sediment transport and erosion/deposition simulation using path sampling method (SIMWE).
  Raster → Hydrologic modeling → SIMWE Sediment flux modeling
• r.sim.water: Overland flow hydrologic simulation using path sampling method (SIMWE).
  Raster → Hydrologic modeling → SIMWE Overland flow modeling
• r.slope.aspect: Generates raster map layers of slope, aspect, curvatures and partial derivatives from a raster map layer of true elevation values. Aspect is calculated counterclockwise from east.
  Raster → Terrain analysis → Slope and aspect
• r.spread: 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 → Wildfire modeling → Anisotropic spread simulation
• r.spreadpath: Recursively traces the least cost path backwards to cells from which the cumulative cost was determined.
  Raster → Wildfire modeling → Least-cost spread paths
• r.statistics: Calculates category or object oriented statistics.
  Raster → Overlay rasters → Statistical overlay
• r.stats: Generates area statistics for raster map layers.
  Raster → Report and statistics → General statistics
• r.sum: Sums up the raster cell values.
  Raster → Report and statistics → Sum category values
• r.sun: Solar irradiance and irradiation model.
  Raster → Solar radiance and shadows → Solar irradiance and irradiation
• r.sunmask: Calculates cast shadow areas from sun position and DEM. Either A: exact sun position is specified, or B: date/time to calculate the sun position by r.sunmask itself.
  Raster → Solar radiance and shadows → Shadows map
• r.support.stats: Update raster map statistics.
  Raster → Develop raster map → Update map statistics
• r.support: Allows creation and/or modification of raster map layer support files.
  Raster → Develop raster map → Support file maintenance
• r.surf.area: Surface area estimation for rasters.
  Raster → Report and statistics → Total corrected area
• r.surf.contour: Surface generation program from rasterized contours.
  Raster → Interpolate surfaces → Raster contours
• r.surf.fractal: Creates a fractal surface of a given fractal dimension.
  Raster → Generate surfaces → Fractal surface
• r.surf.gauss: 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 → Generate surfaces → Gaussian deviates surface
• r.surf.idw: Surface interpolation utility for raster map.
  Raster → Interpolate surfaces → IDW from raster points
• r.surf.idw2: Surface generation program.
• r.surf.random: Produces a raster map layer of uniform random deviates whose range can be expressed by the user.
  Raster → Generate surfaces → Random deviates surface
• r.terraflow.short: Flow computation for massive grids (Integer version).
• r.terraflow: Flow computation for massive grids (Float version).
  Raster → Hydrologic modeling → Flow accumulation
• r.texture: Generate images with textural features from a raster map.
  Raster → Terrain analysis → Textural features
• r.thin: Thins non-zero cells that denote linear features in a raster map layer.
  Raster → Transform features → Thin
• r.tileset: Produces tilings of the source projection for use in the destination region and projection.
  Raster → Develop raster map → Tiling
• r.timestamp: Print/add/remove a timestamp for a raster map.
  Raster → Develop raster map → Timestamp
• r.to.rast3: Converts 2D raster map slices to one 3D raster volume map.
  File → Map type conversions → Raster series to volume
• r.to.rast3elev: Creates a 3D volume map based on 2D elevation and value raster maps.
  File → Map type conversions → Raster 2.5D to volume
• r.to.vect: Converts a raster map into a vector map layer.
  File → Map type conversions → Raster to vector
• r.topidx: Creates topographic index [ln(a/tan(beta))] map from elevation map.
  Raster → Hydrologic modeling → Topographic index map
• r.topmodel: Simulates TOPMODEL which is a physically based hydrologic model.
  Raster → Hydrologic modeling → TOPMODEL simulation
• r.transect: Outputs raster map layer values lying along user defined transect line(s).
  Raster → Report and statistics → Sample transects (bearing/distance)
• r.univar: Calculates univariate statistics from the non-null cells of a raster map.
  Raster → Report and statistics → Univariate raster statistics
• r.univar.sh: calculates univariate statistics from a GRASS raster map.
• r.volume: Calculates the volume of data 'clumps', and (optionally) produces a GRASS vector points map containing the calculated centroids of these clumps.
  Raster → Report and statistics → Statistics for clumped cells
• r.walk: 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 → Terrain analysis → Cumulative movement costs
• r.water.outlet: Watershed basin creation program.
  Raster → Hydrologic modeling → Watershed basin creation
• r.watershed: Watershed basin analysis program.
  Raster → Hydrologic modeling → Watershed analysis
• r.what.color: Queries colors for a raster map layer.
• r.what: Queries raster map layers on their category values and category labels.
  Raster → Query by coordinates

Raster 3D commands:

• r3.cross.rast: Creates cross section 2D raster map from 3d raster map based on 2D elevation map.
  Volumes → Cross section
• r3.gwflow: Numerical calculation program for transient, confined groundwater flow in three dimensions.
• r3.in.ascii: Convert a 3D ASCII raster text file into a (binary) 3D raster map layer.
  File → Import grid 3D volume → ASCII 3D import
• r3.in.v5d: import of 3-dimensional Vis5D files (i.e. the v5d file with 1 variable and 1 time step).
  File → Import grid 3D volume → Vis5D import
• r3.info: Outputs basic information about a user-specified 3D raster map layer.
  Volumes → Report and Statistics → Basic volume metadata
• r3.mapcalc: Performs arithmetic on 3D grid volume data.
• r3.mapcalculator: Calculates new grid3D volume from r3.mapcalc expression.
• r3.mask: Establishes the current working 3D raster mask.
  Volumes → 3D Mask
• r3.mkdspf: Creates a display file from an existing grid3 file according to specified threshold levels.
• r3.null: Explicitly create the 3D NULL-value bitmap file.
  Volumes → Develop volumes → Manage 3D NULL values
• r3.out.ascii: Converts a 3D raster map layer into an ASCII text file.
  File → Export grid 3D volume → ASCII 3D export
• r3.out.v5d: Export of GRASS 3D raster map to 3-dimensional Vis5D file.
  File → Export grid 3D volume → Vis5D export
• r3.out.vtk: Converts 3D raster maps (G3D) into the VTK-Ascii format.
  File → Export grid 3D volume → VTK export
• r3.stats: Generates volume statistics for raster3d maps.
• r3.timestamp: Print/add/remove a timestamp for a 3D raster map.
  Volumes → Develop volumes → Manage timestamp
• r3.to.rast: Converts 3D raster maps to 2D raster maps.
  File → Map type conversions → Volume to raster series
• r3.univar: Calculates univariate statistics from the non-null 3d cells of a raster3d map.

Vector commands:

• v.buffer: Creates a buffer around features of given type (areas must contain centroid).
  Vector → Buffer vectors
• v.build.all: Rebuilds topology on all vector maps in the current mapset.
• v.build.polylines: Builds polylines from lines or boundaries.
  Vector → Develop vector map → Build polylines
• v.build: Creates topology for GRASS vector map.
  Vector → Develop vector map → Create or rebuild topology
• v.category: Attach, delete or report vector categories to map geometry.
  Vector → Change attributes → Manage or report categories
• v.centroids: Adds missing centroids to closed boundaries.
  Vector → Develop vector map → Add centroids
• v.class: Classifies attribute data, e.g. for thematic mapping.
• v.clean: Toolset for cleaning topology of vector map.
  Vector → Develop vector map → Clean vector map
• v.colors: Set color rules for features in a vector using a numeric attribute column.
  Vector → Manage colors → Color tables
• v.convert.all: Convert all old GRASS < Ver5.7 vector maps in current mapset to current format.
• v.convert: Imports older versions of GRASS vector maps.
  File → Import vector map → Old GRASS vector import
• v.db.addcol: Adds one or more columns to the attribute table connected to a given vector map.
  Database → Manage databases → Add columns
• v.db.addtable: Creates and adds a new attribute table to a given layer of an existing vector map.
  Database → Manage databases → New table
• v.db.connect: Prints/sets DB connection for a vector map to attribute table.
  Database → Vector database connections → Set vector map - database connection
• v.db.dropcol: Drops a column from the attribute table connected to a given vector map.
• v.db.droptable: Removes existing attribute table of a vector map.
• v.db.join: Allows to join a table to a vector map table.
• v.db.reconnect.all: Reconnects vectors to a new database.
  Database → Vector database connections → Reconnect vector to database
• v.db.renamecol: Renames a column in the attribute table connected to a given vector map.
  Database → Manage databases → Rename column
• v.db.select: Prints vector map attributes.
  Database → Query → Query vector attribute data
• v.db.univar: Calculates univariate statistics on selected table column for a GRASS vector map.
• v.db.update: Allows to update a column in the attribute table connected to a vector map.
  Database → Manage databases → Change values
• v.delaunay: Creates a Delaunay triangulation from an input vector map containing points or centroids.
  Vector → Generate areas from points → Delaunay triangles
• v.digit: Interactive editing and digitization of vector maps.
• v.dissolve: Dissolves boundaries between adjacent areas sharing a common category number or attribute.
  Vector → Develop vector map → Dissolve boundaries
• v.distance: Finds the nearest element in vector map 'to' for elements in vector map 'from'.
  Vector → Nearest features
• v.drape: Converts vector map to 3D by sampling of elevation raster map.
  Vector → Develop vector map → Create 3D vector over raster
• v.edit: Edits a vector map, allows adding, deleting and modifying selected vector features.
  Vector → Develop vector map → Edit vector map (non-interactively)
• v.external: Creates a new vector as a read-only link to OGR layer.
  File → Import vector map → Link to OGR
• v.extract: Selects vector objects from an existing vector map and creates a new map containing only the selected objects.
  Vector → Query with attributes
• v.extrude: Extrudes flat vector object to 3D with defined height.
  Vector → Develop vector map → Extrude 3D vector map
• v.generalize: Vector based generalization.
  Vector → Develop vector map → Smooth or simplify
• v.hull: Uses a GRASS vector points map to produce a convex hull vector map.
  Vector → Generate areas from points → Convex hull
• v.in.ascii: Creates a vector map from ASCII points file or ASCII vector file.
  File → Import vector map → ASCII points/GRASS ASCII vector import
• v.in.db: Creates new vector (points) map from database table containing coordinates.
  Vector → Generate points → Generate from database
• v.in.dxf: Converts files in DXF format to GRASS vector map format.
  File → Import vector map → DXF import
• v.in.e00: Import E00 file into a vector map.
  File → Import vector map → ESRI e00 import
• v.in.garmin: Download waypoints, routes, and tracks from a Garmin GPS receiver into a vector map.
  File → Import vector map → Garmin GPS import
• v.in.geonames: Imports geonames.org country files into a GRASS vector points map.
  File → Import vector map → Geonames import
• v.in.gns: Imports US-NGA GEOnet Names Server (GNS) country files into a GRASS vector points map.
  File → Import vector map → GEOnet import
• v.in.gpsbabel: Import waypoints, routes, and tracks from a GPS receiver or GPS download file into a vector map.
  File → Import vector map → GPSBabel GPS import
• v.in.mapgen: Import Mapgen or Matlab vector maps into GRASS.
  File → Import vector map → Matlab and MapGen import
• v.in.ogr: Convert OGR vector layers to GRASS vector map.
  File → Import vector map → Import vector data using OGR
• v.in.region: Create a new vector from the current region.
  Vector → Generate area for current region
• v.in.sites.all: Converts all old GRASS < Ver5.7 sites maps in current mapset to vector maps.
• v.in.sites: Converts a GRASS site_lists file into a vector map.
  File → Map type conversions → Sites to vector
• v.in.wfs: Import GetFeature from WFS.
• v.info: Outputs basic information about a user-specified vector map.
  Vector → Reports and statistics → Basic vector metadata
• v.kcv: Randomly partition points into test/train sets.
  Vector → Test/training point sets
• v.kernel: Generates a raster density map from vector points data using a moving 2D isotropic Gaussian kernel or optionally generates a vector density map on vector network with a 1D kernel.
  Raster → Generate surfaces → Gaussian kernel density surface
• v.label.sa: Create optimally placed labels for vector map(s).
• v.label: Creates paint labels for a vector map from attached attributes.
  Vector → Develop vector map → Create labels
• v.lidar.correction: Correction of the v.lidar.growing output. It is the last of the three algorithms for LIDAR filtering.
  Vector → Lidar analysis → Correct and reclassify objects
• v.lidar.edgedetection: Detects the object's edges from a LIDAR data set.
  Vector → Lidar analysis → Detect edges
• v.lidar.growing: Building contour determination and Region Growing algorithm for determining the building inside.
  Vector → Lidar analysis → Detect interiors
• v.lrs.create: Create Linear Reference System.
  Vector → Linear referencing → Create LRS
• v.lrs.label: Create stationing from input lines, and linear reference system.
  Vector → Linear referencing → Create stationing
• v.lrs.segment: Creates points/segments from input lines, linear reference system and positions read from stdin or a file.
  Vector → Linear referencing → Create points/segments
• v.lrs.where: Finds line id and real km+offset for given points in vector map using linear reference system.
  Vector → Linear referencing → Find line id and offset
• v.mkgrid: Creates a GRASS vector map of a user-defined grid.
  Vector → Generate grid
• v.neighbors: Makes each cell value a function of the attribute values assigned to the vector points or centroids around it, and stores new cell values in an output raster map layer.
  Raster → Neighborhood analysis → Neighborhood points
• v.net.alloc: Allocate subnets for nearest centres (direction from centre).
  Vector → Network analysis → Allocate subnets
• v.net.iso: Splits net by cost isolines.
  Vector → Network analysis → Split net
• v.net.path: Finds shortest path on vector network.
  Vector → Network analysis → Shortest path
• v.net.salesman: Creates a cycle connecting given nodes (Traveling salesman problem).
  Vector → Network analysis → Traveling salesman analysis
• v.net.steiner: Create Steiner tree for the network and given terminals.
  Vector → Network analysis → Steiner tree
• v.net.visibility: Visibility graph construction.
  Vector → Network analysis → Visibility network
• v.net: Performs network maintenance.
  Vector → Network analysis → Network maintenance
• v.normal: Tests for normality for points.
  Vector → Reports and statistics → Test normality
• v.out.ascii: Converts a GRASS binary vector map to a GRASS ASCII vector map.
  File → Export vector map → ASCII points/GRASS ASCII vector export
• v.out.dxf: Exports GRASS vector map layers to DXF file format.
  File → Export vector map → DXF export
• v.out.gpsbabel: Exports a vector map to a GPS receiver or file format supported by GpsBabel.
  File → Export vector map → Multiple GPS export formats using GPSBabel
• v.out.ogr: Converts to one of the supported OGR vector formats.
  File → Export vector map → Multiple export formats using OGR
• v.out.pov: Converts to POV-Ray format, GRASS x,y,z -> POV-Ray x,z,y.
  File → Export vector map → POV-Ray export
• v.out.svg: Exports a GRASS vector map to SVG.
  File → Export vector map → SVG export
• v.out.vtk: Converts a GRASS binary vector map to VTK ASCII output.
  File → Export vector map → VTK export
• v.outlier: Removes outliers from vector point data.
  Vector → Remove outliers in point sets
• v.overlay: Overlays two vector maps.
  Vector → Overlay vector maps → Overlay vector maps
• v.parallel: Creates parallel line to input vector lines.
  Vector → Develop vector map → Parallel lines
• v.patch: Create a new vector map layer by combining other vector map layers.
  Vector → Overlay vector maps → Patch vector maps
• v.perturb: Random location perturbations of GRASS vector points.
  Vector → Generate points → Perturb points
• v.proj: Allows projection conversion of vector maps.
  Vector → Develop vector map → Reproject vector map
• v.qcount: Indices for quadrat counts of sites lists.
  Vector → Reports and statistics → Quadrat indices
• v.random: Randomly generate a 2D/3D vector points map.
  Vector → Generate points → Generate random points
• v.rast.stats: Calculates univariate statistics from a GRASS raster map based on vector polygons and uploads statistics to new attribute columns.
  Vector → Update area attributes from raster
• v.reclass: Changes vector category values for an existing vector map according to results of SQL queries or a value in attribute table column.
  Vector → Change attributes → Reclassify
• v.report: Reports geometry statistics for vectors.
  Vector → Reports and statistics → Report topology by category
• v.sample: Samples a raster map at vector point locations.
  Vector → Update point attributes from raster → Sample raster neighborhood around points
• v.segment: Creates points/segments from input vector lines and positions.
  Vector → Develop vector map → Split polylines
• v.select: Selects features from vector map (A) by features from other vector map (B).
  Vector → Query with another vector map
• v.split: Split lines to shorter segments.
• v.support: Updates vector map metadata.
• v.surf.bspline: Bicubic or bilinear spline interpolation with Tykhonov regularization.
  Raster → Interpolate surfaces → Bilinear and bicubic from vector points
• v.surf.idw: Surface interpolation from vector point data by Inverse Distance Squared Weighting.
  Raster → Interpolate surfaces → IDW from vector points
• v.surf.rst: Spatial approximation and topographic analysis from given point or isoline data in vector format to floating point raster format using regularized spline with tension.
  Raster → Interpolate surfaces → Regularized spline tension
• v.to.3d: Performs transformation of 2D vector features to 3D.
  File → Map type conversions → 2D vector to 3D vector
• v.to.db: Populates database values from vector features.
  Vector → Reports and statistics → Upload or report topology
• v.to.points: Create points along input lines in new vector with 2 layers.
  Vector → Generate points → Generate points along lines
• v.to.rast: Converts a binary GRASS vector map into a GRASS raster map .
  File → Map type conversions → Vector to raster
• v.to.rast3: Converts a binary GRASS vector map (only points) layer into a 3D GRASS raster map layer.
  File → Map type conversions → Vector to volume
• v.transform: Performs an affine transformation (shift, scale and rotate, or GPCs) on vector map.
  Vector → Develop vector map → Reposition vector map
• v.type: Change the type of geometry elements.
  Vector → Develop vector map → Convert object types
• v.univar: Calculates univariate statistics for attribute. Variance and standard deviation is calculated only for points if specified.
  Vector → Reports and statistics → Univariate attribute statistics
• v.univar.sh: Calculates univariate statistics on selected table column for a GRASS vector map.
• v.vol.rst: Interpolates point data to a G3D grid volume using regularized spline with tension (RST) algorithm.
  Volumes → Interpolate volume from points
• v.voronoi: Creates a Voronoi diagram from an input vector map containing points or centroids.
  Vector → Generate areas from points → Voronoi diagram/Thiessen polygons
• v.what.rast: Uploads raster values at positions of vector points to the table.
  Vector → Update point attributes from raster → Sample raster maps at point locations
• v.what.vect: Uploads vector values at positions of vector points to the table.
  Vector → Update point attributes from areas
• v.what: Queries a vector map layer at given locations.
  Vector → Query with coordinate(s)

Help Index
© 2007-2009 GRASS Development Team