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Graphical index of GRASS GIS modules
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Raster modules:
• r.basins.fill Generates watershed subbasins raster map.
• r.blend Blends color components of two raster maps by a given ratio.
• r.buffer Creates a raster map showing buffer zones surrounding cells that contain non-NULL
category values.
• r.buffer.lowmem Creates a raster map showing buffer zones surrounding cells that contain non-NULL
category values.
• r.buildvrt Build a VRT (Virtual Raster) from the list of input raster maps.
• r.carve Generates stream channels.
• r.category Manages category values and labels associated with user-specified raster map layers.
• r.circle Creates a raster map containing concentric rings around a given point.
• r.clump Recategorizes data in a raster map by grouping cells that form physically discrete areas
into unique categories.
• r.coin Tabulates the mutual occurrence (coincidence) of categories for two raster map layers.
• r.colors Creates/modifies the color table associated with a raster map.
• r.colors.out Exports the color table associated with a raster map.
• r.colors.stddev Sets color rules based on stddev from a raster map’s mean value.
• r.composite Combines red, green and blue raster maps into a single composite raster map.
• r.compress Compresses and decompresses raster maps.
• r.contour Produces a vector map of specified contours from a raster map.
• 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.
• r.covar Outputs a covariance/correlation matrix for user-specified raster map layer(s).
• r.cross Creates a cross product of the category values from multiple raster map layers.
• r.describe Prints terse list of category values found in a raster map layer.
• r.distance Locates the closest points between objects in two raster maps.
• r.drain Traces a flow through an elevation model or cost surface on a raster map.
• r.external Links GDAL supported raster data as a pseudo GRASS raster map.
• r.external.out Redirects raster output to file utilizing GDAL library rather than storing in
GRASS raster format.
• r.fill.dir Filters and generates a depressionless elevation map and a flow direction map from a
given elevation raster map.
• r.fill.stats Rapidly fills ’no data’ cells (NULLs) of a raster map with interpolated values
(IDW).
• r.fillnulls Fills no-data areas in raster maps using spline interpolation.
• r.flow Constructs flowlines.
• r.geomorphon Calculates geomorphons (terrain forms) and associated geometry using machine vision
approach.
• r.grow.distance Generates a raster map containing distances to nearest raster features.
• r.grow Generates a raster map layer with contiguous areas grown by one cell.
• r.gwflow Numerical calculation program for transient, confined and unconfined groundwater flow in
two dimensions.
• r.his Generates red, green and blue (RGB) raster map layers combining hue, intensity and
saturation (HIS) values from user-specified input raster map layers.
• r.horizon Computes horizon angle height from a digital elevation model.
• r.import Imports raster data into a GRASS raster map using GDAL library and reprojects on the
fly.
• r.in.ascii Converts a GRASS ASCII raster file to binary raster map.
• r.in.aster Georeference, rectify, and import Terra-ASTER imagery and relative DEMs using
gdalwarp.
• r.in.bin Import a binary raster file into a GRASS raster map layer.
• r.in.gdal Imports raster data into a GRASS raster map using GDAL library.
• r.in.gridatb Imports GRIDATB.FOR map file (TOPMODEL) into a GRASS raster map.
• r.in.mat Imports a binary MAT-File(v4) to a GRASS raster.
• r.in.png Imports non-georeferenced PNG format image.
• r.in.poly Creates raster maps from ASCII polygon/line/point data files.
• r.in.srtm Imports SRTM HGT files into raster map.
• r.in.wms Downloads and imports data from OGC WMS and OGC WMTS web mapping servers.
• r.in.xyz Creates a raster map from an assemblage of many coordinates using univariate statistics.
• r.info Outputs basic information about a raster map.
• r.kappa Calculates error matrix and kappa parameter for accuracy assessment of classification
result.
• r.lake Fills lake at given point to given level.
• r.latlong Creates a latitude/longitude raster map.
• r.li.cwed Calculates contrast weighted edge density index on a raster map
• r.li.daemon Support module for r.li landscape index calculations.
• r.li.dominance Calculates dominance’s diversity index on a raster map
• r.li.edgedensity Calculates edge density index on a raster map, using a 4 neighbour algorithm
• r.li Toolset for multiscale analysis of landscape structure
• 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
• r.li.padcv Calculates coefficient of variation of patch area on a raster map
• r.li.padrange Calculates range of patch area size on a raster map
• r.li.padsd Calculates standard deviation of patch area a raster map
• r.li.patchdensity Calculates patch density index on a raster map, using a 4 neighbour algorithm
• r.li.patchnum Calculates patch number index on a raster map, using a 4 neighbour algorithm.
• r.li.pielou Calculates Pielou’s diversity index on a raster map
• r.li.renyi Calculates Renyi’s diversity index on a raster map
• r.li.richness Calculates richness index on a raster map
• r.li.shannon Calculates Shannon’s diversity index on a raster map
• r.li.shape Calculates shape index on a raster map
• r.li.simpson Calculates Simpson’s diversity index on a raster map
• r.mapcalc Raster map calculator.
• r.mapcalc.simple Calculates a new raster map from a simple r.mapcalc expression.
• r.mask Creates a MASK for limiting raster operation.
• r.mfilter Performs raster map matrix 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.
• r.null Manages NULL-values of given raster map.
• r.out.ascii Converts a raster map layer into a GRASS ASCII text file.
• r.out.bin Exports a GRASS raster to a binary array.
• r.out.gdal Exports GRASS raster maps into GDAL supported formats.
• r.out.gridatb Exports GRASS raster map to GRIDATB.FOR map file (TOPMODEL).
• r.out.mat Exports a GRASS raster to a binary MAT-File.
• r.out.mpeg Converts raster map series to MPEG movie.
• r.out.png Export a GRASS raster map as a non-georeferenced PNG image.
• r.out.pov Converts a raster map layer into a height-field file for POV-Ray.
• r.out.ppm Converts a GRASS raster map to a PPM image file.
• r.out.ppm3 Converts 3 GRASS raster layers (R,G,B) to a PPM image file.
• r.out.vrml Exports a raster map to the Virtual Reality Modeling Language (VRML).
• r.out.vtk Converts raster maps into the VTK-ASCII format.
• r.out.xyz Exports a raster map to a text file as x,y,z values based on cell centers.
• r.pack Exports a raster map as GRASS GIS specific archive file
• r.param.scale Extracts terrain parameters from a DEM.
• 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.
• r.path Traces paths from starting points following input directions.
• r.plane Creates raster plane map given dip (inclination), aspect (azimuth) and one point.
• r.profile Outputs the raster map layer values lying on user-defined line(s).
• r.proj Re-projects a raster map from given location to the current location.
• r.quant Produces the quantization file for a floating-point map.
• r.quantile Compute quantiles using two passes.
• r.random.cells Generates random cell values with spatial dependence.
• r.random Creates a raster map layer and vector point map containing randomly located points.
• r.random.surface Generates random surface(s) with spatial dependence.
• r.reclass.area Reclasses a raster map greater or less than user specified area size (in
hectares).
• r.reclass Reclassify raster map based on category values.
• r.recode Recodes categorical raster maps.
• r.region Sets the boundary definitions for a raster map.
• r.regression.line Calculates linear regression from two raster maps: y = a + b*x.
• r.regression.multi Calculates multiple linear regression from raster maps.
• r.relief Creates shaded relief map from an elevation map (DEM).
• r.report Reports statistics for raster maps.
• r.resamp.bspline Performs bilinear or bicubic spline interpolation with Tykhonov regularization.
• r.resamp.filter Resamples raster map layers using an analytic kernel.
• r.resamp.interp Resamples raster map to a finer grid using interpolation.
• 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.
• r.resamp.stats Resamples raster map layers to a coarser grid using aggregation.
• r.resample GRASS raster map layer data resampling capability.
• r.rescale.eq Rescales histogram equalized the range of category values in a raster map layer.
• r.rescale Rescales the range of category values in a raster map layer.
• r.rgb Splits a raster map into red, green and blue maps.
• r.ros Generates rate of spread raster maps.
• r.series.accumulate Makes each output cell value a accumulationfunction of the values assigned to
the corresponding cells in the input raster map layers.
• r.series Makes each output cell value a function of the values assigned to the corresponding
cells in the input raster map layers.
• r.series.interp Interpolates raster maps located (temporal or spatial) in between input raster
maps at specific sampling positions.
• r.shade Drapes a color raster over an shaded relief or aspect map.
• r.sim.sediment Sediment transport and erosion/deposition simulation using path sampling method
(SIMWE).
• r.sim.water Overland flow hydrologic simulation using path sampling method (SIMWE).
• r.slope.aspect Generates raster maps of slope, aspect, curvatures and partial derivatives from an
elevation raster map.
• r.solute.transport Numerical calculation program for transient, confined and unconfined solute
transport in two dimensions
• r.spread Simulates elliptically anisotropic spread.
• r.spreadpath Recursively traces the least cost path backwards to cells from which the cumulative
cost was determined.
• r.statistics Calculates category or object oriented statistics.
• r.stats Generates area statistics for raster map.
• r.stats.quantile Compute category quantiles using two passes.
• r.stats.zonal Calculates category or object oriented statistics (accumulator-based statistics).
• r.stream.extract Performs stream network extraction.
• r.sun Solar irradiance and irradiation model.
• r.sunhours Calculates solar elevation, solar azimuth, and sun hours.
• r.sunmask Calculates cast shadow areas from sun position and elevation raster map.
• r.support Allows creation and/or modification of raster map layer support files.
• r.support.stats Update raster map statistics
• r.surf.area Prints estimation of surface area for raster map.
• r.surf.contour Generates surface raster map from rasterized contours.
• r.surf.fractal Creates a fractal surface of a given fractal dimension.
• r.surf.gauss Generates a raster map using gaussian random number generator.
• r.surf.idw Provides surface interpolation from raster point data by Inverse Distance Squared
Weighting.
• r.surf.random Produces a raster surface map of uniform random deviates with defined range.
• r.terraflow Performs flow computation for massive grids.
• r.texture Generate images with textural features from a raster map.
• r.thin Thins non-null cells that denote linear features in a raster map layer.
• r.tile Splits a raster map into tiles.
• r.tileset Produces tilings of the source projection for use in the destination region and
projection.
• r.timestamp Modifies a timestamp for a raster map.
• r.to.rast3 Converts 2D raster map slices to one 3D raster volume map.
• r.to.rast3elev Creates a 3D volume map based on 2D elevation and value raster maps.
• r.to.vect Converts a raster map into a vector map.
• r.topidx Creates a topographic index (wetness index) raster map from an elevation raster map.
• r.topmodel Simulates TOPMODEL which is a physically based hydrologic model.
• r.transect Outputs raster map layer values lying along user defined transect line(s).
• r.univar Calculates univariate statistics from the non-null cells of a raster map.
• r.unpack Imports a GRASS GIS specific raster archive file (packed with r.pack) as a raster map
• r.uslek Computes USLE Soil Erodibility Factor (K).
• r.usler Computes USLE R factor, Rainfall erosivity index.
• r.viewshed Computes the viewshed of a point on an elevation raster map.
• r.volume Calculates the volume of data "clumps".
• r.walk Creates a raster map showing the anisotropic cumulative cost of moving between different
geographic locations on an input raster map whose cell category values represent cost.
• r.water.outlet Creates watershed basins from a drainage direction map.
• r.watershed Calculates hydrological parameters and RUSLE factors.
• r.what.color Queries colors for a raster map layer.
• r.what Queries raster maps on their category values and category labels.
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© 2003-2019 GRASS Development Team, GRASS GIS 7.8.2 Reference Manual