---
name: "keywords"
section: "1grass"
platform: "linux"
package: "grass-doc"
version: "8.4.1-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/keywords"
---

# keywords(1grass)

## Keywords - Index of GRASS GIS modules

- **3D**

  v.drape, v.extrude, v.hull, v.out.postgis, v.surf.rst, v.to.3d, v.to.points, v.vol.rst

- **ACCA**

  i.landsat.acca

- **accumulation**

  r.series.accumulate, r.terraflow, r.watershed, t.rast.accdetect, t.rast.accumulate

- **actual evapotranspiration**

  i.eb.eta

- **addons**

  g.extension

- **aerial**

  g.gui.image2target, g.gui.photo2image

- **aggregation**

  r.in.xyz, r.neighbors, r.patch, r.reclass.area, r.resamp.stats, r.series, r3.in.xyz, r3.neighbors, t.rast.aggregate.ds, t.rast.aggregate, t.rast.neighbors, t.rast.series, v.neighbors

- **albedo**

  i.albedo

- **algebra**

  r.mapcalc, r.mapcalc.simple, r.mfilter, r.mode, r.neighbors, r.quantile, r.texture, r3.mapcalc, r3.neighbors, t.rast.algebra, t.rast.mapcalc, t.rast3d.algebra, t.rast3d.mapcalc, t.vect.algebra, v.neighbors

- **animation**

  g.gui.animation, r.out.mpeg

- **area**

  m.measure, v.buffer, v.centroids, v.clip, v.dissolve, v.in.ascii, v.to.db, v.to.lines, v.type

- **area estimation**

  r.surf.area

- **arrow**

  d.northarrow, d.rast.arrow

- **articulation points**

  v.net.bridge

- **ASCII**

  r.in.ascii, r.in.xyz, r.out.ascii, r.out.xyz, r3.in.ascii, r3.out.ascii, v.in.ascii, v.out.ascii

- **aspect**

  r.slope.aspect

- **ASTER**

  i.albedo, i.aster.toar, r.in.aster

- **atmospheric correction**

  i.atcorr, i.landsat.toar

- **attribute columns**

  v.info

- **attribute table**

  db.columns, db.connect, db.copy, db.createdb, db.databases, db.describe, db.dropcolumn, db.dropdb, db.droptable, db.execute, db.in.ogr, db.out.ogr, db.select, db.tables, db.test, db.univar, g.gui.dbmgr, t.vect.db.select, v.class, v.db.addcolumn, v.db.addtable, v.db.connect, v.db.dropcolumn, v.db.droprow, v.db.droptable, v.db.join, v.db.reconnect.all, v.db.renamecolumn, v.db.select, v.db.univar, v.db.update, v.distance, v.to.db, v.univar, v.vect.stats, v.what.rast, v.what.rast3, v.what.strds, v.what.vect

- **attribute update**

  v.db.update

- **attributes**

  v.reclass

- **autocorrelation**

  r.random.cells

- **AVHRR**

  i.albedo

- **azimuth**

  v.to.db

- **background**

  d.background

- **bartlett**

  r.resamp.filter

- **bicubic**

  r.resamp.bspline, r.resamp.interp

- **bilinear**

  r.resamp.bspline, r.resamp.interp

- **binning**

  r.in.xyz, r3.in.xyz

- **biomass**

  i.biomass

- **biophysical parameters**

  i.vi

- **blackman**

  r.resamp.filter

- **bounding box**

  v.to.db

- **box**

  r.resamp.filter

- **brightness temperature**

  i.aster.toar, i.landsat.toar

- **Brovey**

  i.pansharpen

- **buffer**

  r.buffer, r.buffer.lowmem, r.circle, v.buffer, v.parallel

- **canonical components analysis**

  i.cca

- **cartography**

  d.barscale, d.graph, d.grid, d.legend, d.legend.vect, d.linegraph, d.northarrow, d.rast.leg, d.text, d.title, d.vect.chart, d.vect.thematic

- **category**

  r.category, v.category, v.to.db

- **CCA**

  i.cca

- **centrality measures**

  v.net.centrality

- **centroid**

  v.centroids

- **chart maps**

  d.vect.chart

- **choropleth map**

  d.vect.thematic

- **circle**

  r.circle, v.buffer

- **citing**

  g.version

- **classification**

  g.gui.iclass, i.cluster, i.gensig, i.gensigset, i.maxlik, i.segment, i.signatures, i.smap, r.kappa, v.class

- **clip**

  v.clip, v.overlay

- **cloud detection**

  i.landsat.acca

- **clump**

  v.cluster

- **clumps**

  r.clump, r.object.geometry, r.volume

- **cluster**

  v.cluster

- **color table**

  d.colortable, r.colors, r.colors.out, r.colors.stddev, r.what.color, r3.colors, r3.colors.out, t.rast.colors, v.colors, v.colors.out

- **color transformation**

  d.his, i.his.rgb, i.rgb.his, r.his

- **colors**

  d.colorlist, i.colors.enhance

- **compactness**

  v.to.db

- **components**

  v.net.components

- **composite**

  r.blend, r.composite

- **compression**

  r.compress

- **computational region**

  g.region

- **connection settings**

  db.connect, db.drivers, db.login

- **connectivity**

  v.net.connectivity

- **contour**

  t.rast.contour

- **contours**

  r.contour

- **conversion**

  r.in.ascii, r.in.xyz, r.out.xyz, r.to.rast3, r.to.rast3elev, r.to.vect, r3.in.ascii, r3.in.xyz, r3.out.ascii, r3.to.rast, t.rast.to.rast3, t.rast.to.vect, v.to.rast, v.to.rast3

- **convolution**

  r.resamp.filter

- **coordinates**

  v.to.db

- **copy**

  g.copy, t.copy

- **copying**

  r.pack, r.unpack, v.pack, v.unpack

- **copyright**

  g.version

- **correlation**

  d.correlate

- **cost allocation**

  r.cost, r.walk, v.net.alloc, v.net.iso

- **cost surface**

  r.cost, r.drain, r.path, r.walk

- **create**

  t.create

- **create project**

  g.proj, r.in.gdal, t.rast.import, t.vect.import, v.in.ogr

- **cumulative costs**

  r.cost, r.spreadpath, r.walk

- **curvature**

  r.slope.aspect

- **data**

  g.download.location, g.download.project

- **DBF**

  v.db.reconnect.all

- **decimation**

  v.decimate

- **densification**

  v.split

- **deposition**

  r.sim.sediment

- **depressions**

  r.fill.dir

- **diagram**

  d.correlate, d.polar

- **difference**

  v.overlay

- **digitizer**

  g.gui.rdigit, g.gui.vdigit

- **displacement**

  v.generalize

- **dissolve**

  v.dissolve, v.extract

- **distance**

  d.geodesic, d.rhumbline, m.cogo, m.measure, r.distance, r.grow.distance, r.grow, v.distance

- **diversity index**

  r.li.dominance, r.li.pielou, r.li.renyi, r.li.richness, r.li.shannon, r.li.simpson

- **download**

  g.download.location, g.download.project, g.extension

- **drainage**

  r.watershed

- **DXF**

  v.in.dxf, v.out.dxf

- **E00**

  v.in.e00

- **edges**

  i.zc, v.lidar.edgedetection

- **editing**

  d.rast.edit, g.gui.rdigit, g.gui.vdigit, v.edit, v.type

- **elevation**

  d.shade, r.fillnulls, r.in.aster, r.param.scale, r.plane, r.relief, r.shade

- **emissivity**

  i.emissivity

- **energy balance**

  i.eb.eta, i.eb.evapfr, i.eb.hsebal01, i.eb.netrad, i.eb.soilheatflux, i.emissivity

- **erase**

  d.background

- **erosion**

  r.sim.sediment, r.uslek, r.usler

- **evaporative fraction**

  i.eb.evapfr, i.eb.hsebal01

- **evapotranspiration**

  i.evapo.mh, i.evapo.pm, i.evapo.pt, i.evapo.time

- **export**

  d.out.file, d.to.rast, db.out.ogr, r.colors.out, r.external.out, r.out.ascii, r.out.bin, r.out.gdal, r.out.gridatb, r.out.mat, r.out.mpeg, r.out.png, r.out.pov, r.out.ppm, r.out.ppm3, r.out.vrml, r.out.vtk, r.out.xyz, r.pack, r3.colors.out, r3.out.ascii, r3.out.bin, r3.out.netcdf, r3.out.v5d, r3.out.vtk, t.rast.export, t.rast.out.vtk, t.vect.export, v.colors.out, v.db.select, v.external.out, v.out.ascii, v.out.dxf, v.out.ogr, v.out.postgis, v.out.pov, v.out.svg, v.out.vtk, v.pack

- **extensions**

  g.extension.all, g.extension

- **extent**

  g.region, r.info, r3.info, t.info, v.info

- **exterior**

  v.fill.holes

- **external**

  r.external, r.external.out, v.external, v.external.out

- **extract**

  t.rast.extract, t.rast3d.extract, t.vect.extract, v.decimate, v.extract, v.outlier

- **Fast Fourier Transform**

  i.fft, i.ifft

- **fill**

  d.background, v.fill.holes

- **fill sinks**

  r.fill.dir

- **filter**

  r.mfilter, r.neighbors, r.resamp.filter, r3.neighbors, v.outlier

- **FIR**

  r.resamp.filter

- **fire**

  r.ros, r.spread, r.spreadpath

- **flood**

  r.lake

- **flow**

  r.sim.water, r.terraflow, v.net.flow

- **focal statistics**

  r.neighbors, r3.neighbors

- **FPAR**

  i.biomass

- **fractal**

  r.surf.fractal, v.to.db

- **frame**

  d.frame

- **fusion**

  i.pansharpen

- **gauss**

  r.resamp.filter

- **gazetteer**

  v.in.geonames

- **GCP**

  g.gui.gcp, g.gui.image2target, g.gui.photo2image, i.ortho.transform, m.transform, v.transform

- **generalization**

  v.decimate, v.generalize

- **geometry**

  g.gui.gcp, g.gui.image2target, g.gui.photo2image, i.image.mosaic, i.ortho.photo, i.rectify, r.circle, r.patch, r.region, r.thin, r.to.vect, v.buffer, v.build, v.build.polylines, v.clean, v.delaunay, v.drape, v.edit, v.extrude, v.fill.holes, v.generalize, v.hull, v.in.ogr, v.in.region, v.mkgrid, v.overlay, v.parallel, v.patch, v.perturb, v.rectify, v.report, v.segment, v.select, v.split, v.to.3d, v.to.db, v.to.lines, v.to.points, v.transform, v.type, v.univar, v.voronoi

- **geomorphology**

  r.param.scale

- **geomorphons**

  r.geomorphon

- **georectification**

  g.gui.gcp, g.gui.image2target, g.gui.photo2image

- **gradient**

  r3.gradient

- **graphical modeler**

  g.gui.gmodeler

- **graphics**

  d.background, d.erase, d.frame, d.his, d.info, d.mon, d.rast, d.redraw, d.rgb, d.vect, m.nviz.image, m.nviz.script, wxpyimgview, ximgview

- **graticule**

  d.grid

- **great circle**

  d.geodesic

- **grid**

  d.grid, v.mkgrid

- **groundwater flow**

  r.gwflow, r3.gwflow

- **grow**

  v.buffer

- **GUI**

  g.gui.animation, g.gui.datacatalog, g.gui.dbmgr, g.gui.gcp, g.gui.gmodeler, g.gui, g.gui.iclass, g.gui.image2target, g.gui.mapswipe, g.gui.photo2image, g.gui.psmap, g.gui.rdigit, g.gui.rlisetup, g.gui.timeline, g.gui.tplot, g.gui.vdigit

- **hamming**

  r.resamp.filter

- **hann**

  r.resamp.filter

- **hazard**

  r.lake, r.ros, r.spread

- **heatmap**

  v.kernel

- **help**

  g.manual

- **hermite**

  r.resamp.filter

- **hexagon**

  v.mkgrid

- **hillshade**

  d.shade, r.relief, r.shade

- **HIS**

  d.his, i.his.rgb, i.pansharpen, i.rgb.his, r.his

- **histogram**

  d.histogram

- **history**

  r.info, v.info

- **hotspot**

  v.kernel

- **hydrology**

  r.basins.fill, r.carve, r.drain, r.fill.dir, r.flow, r.gwflow, r.lake, r.path, r.sim.sediment, r.sim.water, r.solute.transport, r.stream.extract, r.terraflow, r.topidx, r.topmodel, r.uslek, r.usler, r.water.outlet, r.watershed, r3.flow, r3.gwflow

- **IDW**

  r.fill.stats, r.surf.idw, v.surf.idw

- **IHS**

  d.his, i.his.rgb, i.pansharpen, i.rgb.his, r.his

- **image collections**

  i.band.library, r.semantic.label

- **imagery quality assessment**

  i.modis.qc

- **import**

  db.in.ogr, g.download.location, g.download.project, i.in.spotvgt, r.external, r.import, r.in.ascii, r.in.aster, r.in.bin, r.in.gdal, r.in.gridatb, r.in.mat, r.in.png, r.in.poly, r.in.srtm, r.in.wms, r.in.xyz, r.proj, r.unpack, r3.in.ascii, r3.in.bin, r3.in.v5d, r3.in.xyz, t.rast.import, t.vect.import, v.external, v.import, v.in.ascii, v.in.db, v.in.dxf, v.in.e00, v.in.geonames, v.in.lines, v.in.mapgen, v.in.ogr, v.in.wfs, v.proj, v.unpack

- **installation**

  g.extension.all, g.extension

- **interpolation**

  r.fill.stats, r.fillnulls, r.resamp.bspline, r.resamp.interp, r.series.interp, r.surf.contour, r.surf.idw, t.rast.gapfill, v.surf.bspline, v.surf.idw, v.surf.rst, v.vol.rst

- **intersection**

  v.overlay

- **isolines**

  v.net.iso

- **kernel density**

  v.kernel

- **kernel filter**

  r.resamp.filter

- **lanczos**

  r.resamp.filter, r.resamp.interp

- **land flux**

  i.emissivity

- **land surface temperature**

  i.modis.qc

- **landform**

  r.param.scale

- **Landsat**

  i.albedo, i.landsat.acca, i.landsat.toar, i.tasscap

- **landscape structure analysis**

  g.gui.rlisetup, r.li.cwed, r.li.dominance, r.li.edgedensity, r.li.mpa, r.li.mps, r.li.padcv, r.li.padrange, r.li.padsd, r.li.patchdensity, r.li.patchnum, r.li.pielou, r.li.renyi, r.li.richness, r.li.shannon, r.li.shape, r.li.simpson

- **latitude**

  r.latlong

- **layer**

  v.category, v.db.connect

- **legend**

  d.legend, d.legend.vect, d.rast.leg, d.vect.thematic

- **length**

  v.to.db

- **level1**

  d.vect, g.region, r.random, v.cluster, v.decimate, v.edit, v.external, v.in.ascii, v.in.dxf, v.info, v.patch, v.perturb, v.random, v.rectify

- **license**

  g.version

- **LIDAR**

  r.in.xyz, r3.in.xyz, v.decimate, v.lidar.correction, v.lidar.edgedetection, v.lidar.growing, v.outlier, v.surf.bspline

- **line**

  v.buffer, v.build.polylines, v.dissolve, v.edit, v.in.ascii, v.in.lines, v.parallel, v.to.lines, v.to.points, v.type

- **line of sight**

  r.viewshed

- **linear reference system**

  v.lrs.create, v.lrs.label, v.lrs.segment, v.lrs.where

- **list**

  g.list, t.list, t.rast.list, t.rast3d.list, t.vect.list

- **longitude**

  r.latlong

- **LOS**

  r.viewshed

- **machine vision geomorphometry**

  r.geomorphon

- **manual**

  g.manual

- **map annotations**

  d.northarrow, d.rast.arrow, d.rast.num

- **map management**

  g.access, g.copy, g.dirseps, g.filename, g.findetc, g.findfile, g.gui.datacatalog, g.list, g.remove, g.rename, i.group, i.target, r.compress, r.null, r3.null, t.create, t.list, t.rast.list, t.rast3d.list, t.register, t.remove, t.rename, t.unregister, t.vect.list

- **mask**

  r.mask, r3.mask

- **Maximum Likelihood Classification**

  i.gensig, i.maxlik

- **measurement**

  m.measure

- **merge**

  r.patch, t.merge

- **metadata**

  r.describe, r.info, r.region, r.support, r.timestamp, r3.info, r3.support, r3.timestamp, t.connect, t.info, t.select, t.support, t.upgrade, v.info, v.support, v.timestamp

- **miscellaneous**

  m.cogo, m.measure, m.nviz.image, m.nviz.script, m.proj, m.transform

- **MLC**

  i.gensig, i.maxlik

- **model**

  r.ros, r.sim.sediment, r.sim.water, r.spread, r.topmodel

- **MODIS**

  i.albedo, i.modis.qc, i.tasscap

- **modules**

  g.search.modules

- **monitors**

  d.erase, d.frame, d.info, d.mon, d.redraw

- **mosaic**

  r.buildvrt

- **mosaicking**

  i.image.mosaic, r.patch

- **multispectral**

  i.oif, i.spectral

- **NDVI**

  i.in.spotvgt, i.vi

- **nearest neighbor**

  r.resamp.interp, r.resample

- **neighbor**

  r.neighbors, r3.neighbors

- **net radiation**

  i.eb.netrad

- **netCDF**

  r3.out.netcdf

- **network**

  d.path, v.lrs.create, v.lrs.label, v.lrs.segment, v.lrs.where, v.net.alloc, v.net.allpairs, v.net.bridge, v.net.centrality, v.net.components, v.net.connectivity, v.net.distance, v.net.flow, v.net, v.net.iso, v.net.path, v.net.salesman, v.net.spanningtree, v.net.steiner, v.net.timetable, v.net.visibility

- **network generalization**

  v.generalize

- **network maintenance**

  v.net

- **no-data**

  r.mask, r.null, r3.mask, r3.null

- **no-data filling**

  r.fill.stats, r.fillnulls, r.resamp.bspline, t.rast.gapfill, v.surf.rst, v.vol.rst

- **node**

  v.build.polylines, v.edit, v.segment, v.split, v.to.points

- **null data**

  r.mask, r.null, r3.mask, r3.null

- **object recognition**

  i.segment

- **OGC web services**

  r.in.wms, v.in.wfs

- **OGC WFS**

  v.in.wfs

- **OGC WMS**

  r.in.wms

- **OGC WMTS**

  r.in.wms

- **OGR**

  v.external, v.external.out, v.in.ogr, v.out.ogr

- **orthorectify**

  i.ortho.camera, i.ortho.elev, i.ortho.init, i.ortho.photo, i.ortho.rectify, i.ortho.target, i.ortho.transform

- **output**

  d.out.file, db.out.ogr, r.external.out, r.out.ascii, r.out.bin, r.out.gdal, r.out.gridatb, r.out.mat, r.out.mpeg, r.out.png, r.out.pov, r.out.ppm, r.out.ppm3, r.out.vrml, r.out.vtk, r.out.xyz, r3.out.ascii, r3.out.netcdf, r3.out.v5d, r3.out.vtk, t.rast.out.vtk, v.external.out, v.out.ascii, v.out.dxf, v.out.ogr, v.out.postgis, v.out.pov, v.out.svg, v.out.vtk

- **overland flow**

  r.sim.water

- **paint labels**

  d.labels, v.label, v.label.sa

- **parallel**

  r.mfilter, r.neighbors, r.patch, r.resamp.filter, r.resamp.interp, r.series, r.sim.sediment, r.sim.water, r.slope.aspect, r.sun, r.univar, t.rast.univar, t.rast3d.univar, v.surf.rst

- **patch index**

  r.li.cwed, r.li.edgedensity, r.li.mpa, r.li.mps, r.li.padcv, r.li.padrange, r.li.padsd, r.li.patchdensity, r.li.patchnum, r.li.shape

- **patching**

  r.patch

- **PCA**

  i.pansharpen, i.pca

- **percentile**

  r.quantile, r.stats.quantile

- **perimeter**

  v.fill.holes, v.to.db

- **permission**

  g.access

- **photo**

  g.gui.image2target, g.gui.photo2image

- **plot**

  d.profile, g.gui.timeline, g.gui.tplot

- **PNG**

  r.in.png, r.out.png

- **point**

  v.edit, v.in.ascii, v.in.lines, v.segment, v.to.lines, v.to.points, v.type

- **point cloud**

  v.cluster

- **point density**

  v.kernel

- **point pattern**

  v.kcv, v.mkgrid, v.normal, v.perturb, v.qcount, v.random

- **points**

  v.decimate, v.in.db, v.kcv, v.normal

- **polar**

  m.cogo

- **position**

  d.where, r.what, v.what, v.what.rast, v.what.rast3, v.what.strds, v.what.vect

- **PostGIS**

  v.external, v.external.out, v.out.postgis

- **principal components analysis**

  i.pca

- **printing**

  g.gui.psmap, ps.map

- **profile**

  d.profile, r.profile, r.transect, r3.cross.rast, v.profile

- **projection**

  g.proj, m.proj, r.import, r.latlong, r.proj, v.import, v.proj

- **proximity**

  r.grow.distance, r.grow

- **quantile**

  r.quantile, r.stats.quantile

- **quantization**

  r.quant

- **querying**

  d.where, i.spectral, r.what.color, r.what, v.rast.stats, v.what, v.what.rast, v.what.rast3, v.what.strds, v.what.vect

- **radiance**

  i.aster.toar, i.atcorr, i.landsat.toar

- **radiometric conversion**

  i.aster.toar, i.atcorr, i.landsat.toar

- **rainfall**

  r.usler

- **random**

  r.random.cells, r.random, r.random.surface, r.surf.gauss, r.surf.random, v.extract, v.perturb, v.random

- **rasterization**

  v.to.rast

- **rate of spread**

  r.ros

- **reclass**

  r.clump, r.object.geometry

- **reclassification**

  r.reclass, r.recode, v.reclass

- **recode categories**

  r.recode

- **rectify**

  i.rectify, v.rectify

- **reflectance**

  i.albedo, i.aster.toar, i.atcorr, i.landsat.toar, i.modis.qc

- **register**

  t.register

- **regression**

  r.regression.line, r.regression.multi

- **relief**

  d.shade, r.relief, r.shade

- **remove**

  g.remove, t.remove

- **rename**

  g.rename, t.rename, v.db.renamecolumn

- **resample**

  r.resamp.bspline, r.resamp.filter, r.resamp.interp, r.resamp.rst, r.resamp.stats, r.resample

- **rescale**

  r.rescale.eq, r.rescale

- **resolution**

  g.region

- **RGB**

  d.his, d.rgb, i.colors.enhance, i.his.rgb, i.rgb.his, r.composite, r.his, r.rgb

- **rhumbline**

  d.rhumbline

- **ring**

  v.fill.holes

- **RST**

  r.resamp.rst, v.surf.rst, v.vol.rst

- **salesman**

  v.net.salesman

- **sampling**

  d.where, r.random.cells, r.random, t.rast.what, t.sample, t.vect.observe.strds, t.vect.what.strds, v.drape, v.extrude, v.kcv, v.random, v.rast.stats, v.sample, v.what.rast, v.what.rast3, v.what.strds, v.what.vect

- **satellite**

  i.albedo, i.aster.toar, i.atcorr, i.colors.enhance, i.landsat.acca, i.landsat.toar, i.modis.qc

- **scripts**

  g.dirseps, g.filename, g.findetc, g.findfile, g.gisenv, g.message, g.tempfile

- **search**

  g.list, g.search.modules

- **search path**

  g.mapsets

- **SEBAL**

  i.eb.eta, i.eb.evapfr, i.eb.hsebal01, i.eb.netrad, i.eb.soilheatflux

- **sediment flow**

  r.sim.sediment

- **segment**

  v.segment, v.split

- **segmentation**

  i.segment, i.smap

- **select**

  t.vect.db.select, v.decimate, v.extract, v.outlier

- **semantic label**

  i.band.library, r.semantic.label

- **Sentinel**

  i.tasscap

- **separate**

  r.rgb

- **series**

  r.patch, r.series.accumulate, r.series, r.series.interp, t.rast.series

- **settings**

  d.colorlist, d.font, d.fontlist, g.gisenv, g.mapset, g.mapsets, g.region, t.connect

- **shadow**

  r.sun, r.sunmask

- **sharpen**

  i.pansharpen

- **shift**

  t.shift

- **shortest path**

  d.geodesic, d.path, v.net.allpairs, v.net.distance, v.net.path, v.net.timetable, v.net.visibility

- **shrink**

  v.buffer

- **sides**

  v.to.db

- **signatures**

  g.gui.iclass, i.cluster, i.gensig, i.gensigset, i.signatures

- **simple**

  r.mapcalc.simple

- **simple features**

  v.out.postgis

- **simplification**

  v.generalize

- **sinc**

  r.resamp.filter

- **sink**

  r.fill.dir, r.terraflow

- **sinuous**

  v.to.db

- **skeleton**

  v.voronoi

- **slope**

  r.slope.aspect, v.to.db

- **SMAP**

  i.gensigset, i.smap

- **smoothing**

  v.generalize

- **snapping**

  t.snap, v.clean, v.in.ogr

- **soil**

  r.sim.sediment, r.sim.water, r.uslek, r.usler

- **soil heat flux**

  i.eb.soilheatflux

- **soil moisture**

  i.eb.evapfr, i.eb.hsebal01

- **solar**

  r.horizon, r.sun, r.sunhours, r.sunmask

- **solute transport**

  r.solute.transport

- **spanning tree**

  v.net.spanningtree

- **spatial query**

  v.overlay, v.select

- **splines**

  r.fillnulls, r.resamp.bspline, r.resamp.rst, v.surf.rst

- **split**

  r.rgb

- **SPOT**

  i.in.spotvgt

- **spread**

  r.ros, r.spread

- **SQL**

  db.copy, db.createdb, db.databases, db.dropdb, db.execute, db.select, v.db.select

- **SQLite**

  v.db.reconnect.all

- **SRTM**

  r.in.srtm

- **statistics**

  d.correlate, d.histogram, db.univar, i.cca, i.oif, r.clump, r.coin, r.covar, r.cross, r.in.xyz, r.kappa, r.mfilter, r.mode, r.neighbors, r.object.geometry, r.quant, r.quantile, r.reclass.area, r.regression.line, r.regression.multi, r.report, r.statistics, r.stats, r.stats.quantile, r.stats.zonal, r.support.stats, r.surf.area, r.texture, r.univar, r3.in.xyz, r3.neighbors, r3.stats, r3.univar, t.rast.univar, t.rast3d.univar, t.vect.univar, v.class, v.db.univar, v.kcv, v.neighbors, v.normal, v.outlier, v.perturb, v.qcount, v.random, v.rast.stats, v.report, v.univar

- **steiner tree**

  v.net.steiner

- **stratified random sampling**

  v.random

- **stream network**

  r.stream.extract, r.watershed

- **stream power index**

  r.watershed

- **sun energy**

  r.sun, r.sunhours

- **sun position**

  r.horizon, r.sunhours, r.sunmask

- **supervised classification**

  g.gui.iclass, i.gensig, i.gensigset, i.smap

- **support**

  g.message, g.tempfile, g.version

- **surface**

  r.contour, r.fill.stats, r.fillnulls, r.random.surface, r.resamp.bspline, r.surf.area, r.surf.contour, r.surf.fractal, r.surf.gauss, r.surf.idw, r.surf.random, v.surf.bspline, v.surf.idw, v.surf.rst, v.vol.rst

- **surface information**

  v.drape, v.what.rast, v.what.rast3

- **Tasseled Cap transformation**

  i.tasscap

- **terrain**

  i.topo.corr, r.param.scale, r.relief, r.slope.aspect

- **terrain patterns**

  r.geomorphon

- **texture**

  r.texture

- **tiling**

  r.tile, r.tileset, r3.retile

- **time**

  r.timestamp, r3.timestamp, t.copy, t.create, t.info, t.list, t.merge, t.rast.accdetect, t.rast.accumulate, t.rast.aggregate.ds, t.rast.aggregate, t.rast.algebra, t.rast.colors, t.rast.contour, t.rast.export, t.rast.extract, t.rast.gapfill, t.rast.import, t.rast.list, t.rast.mapcalc, t.rast.neighbors, t.rast.out.vtk, t.rast.series, t.rast.to.rast3, t.rast.to.vect, t.rast.univar, t.rast.what, t.rast3d.algebra, t.rast3d.extract, t.rast3d.list, t.rast3d.mapcalc, t.rast3d.univar, t.register, t.remove, t.rename, t.sample, t.select, t.shift, t.snap, t.support, t.topology, t.unregister, t.upgrade, t.vect.algebra, t.vect.db.select, t.vect.export, t.vect.extract, t.vect.import, t.vect.list, t.vect.observe.strds, t.vect.univar, t.vect.what.strds, v.timestamp, v.what.strds

- **time management**

  t.merge, t.shift, t.snap

- **timestamp**

  r.timestamp, r3.timestamp, v.timestamp

- **topographic correction**

  i.topo.corr

- **topographic index**

  r.topidx, r.watershed

- **topology**

  t.topology, v.build.all, v.build, v.build.polylines, v.clean, v.generalize, v.in.ogr, v.info, v.out.postgis

- **transect**

  r.profile, r.transect, v.profile

- **transformation**

  i.fft, i.ifft, i.ortho.transform, i.pca, i.tasscap, m.proj, m.transform, r.proj, v.proj, v.transform

- **triangulation**

  v.delaunay, v.voronoi

- **type casting**

  v.db.update

- **union**

  v.overlay

- **unit test**

  test.r3flow, test.raster3d.lib

- **univariate statistics**

  r.resamp.stats, r.univar, r3.univar, v.rast.stats, v.univar, v.vect.stats

- **unregister**

  t.unregister

- **user interface**

  g.gui

- **variables**

  g.gisenv

- **vectorization**

  r.to.vect

- **vegetation**

  i.modis.qc

- **vegetation index**

  i.vi

- **version**

  g.version

- **vertex**

  v.build.polylines, v.edit, v.segment, v.split, v.to.points

- **viewshed**

  r.viewshed

- **virtual raster**

  r.buildvrt

- **visibility**

  v.net.visibility

- **visualization**

  d.shade, m.nviz.image, m.nviz.script, r.shade, ximgview

- **volume**

  r.volume, r3.stats

- **voxel**

  r.to.rast3, r.to.rast3elev, r3.cross.rast, r3.flow, r3.gradient, r3.gwflow, r3.in.ascii, r3.in.bin, r3.in.v5d, r3.in.xyz, r3.info, r3.mask, r3.mkdspf, r3.neighbors, r3.null, r3.out.ascii, r3.out.bin, r3.out.netcdf, r3.out.v5d, r3.out.vtk, r3.retile, r3.stats, r3.support, r3.timestamp, r3.to.rast, t.rast.to.rast3, t.rast3d.algebra, t.rast3d.extract, t.rast3d.list, t.rast3d.mapcalc, t.rast3d.univar, v.to.rast3, v.vol.rst

- **VRML**

  r.out.vrml

- **VTK**

  r.out.vtk, r3.out.vtk, t.rast.out.vtk, v.out.vtk

- **watershed**

  r.basins.fill, r.water.outlet, r.watershed

- **wetness**

  r.topidx

- **workflow**

  g.gui.gmodeler

- **Worldview**

  i.tasscap

- **yield**

  i.biomass

- **zonal statistics**

  r.statistics, r.stats.quantile, r.stats.zonal, r.univar, v.rast.stats, v.vect.stats

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© 2003-2025 GRASS Development Team, GRASS GIS 8.4.1 Reference Manual