Os módulos de GRASS (versão 6.4svn)

g.access

Controls access to the current mapset for other users on the system.

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.

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.

g.gui

Launches a GRASS graphical user interface (GUI) session.

g.list

Lists available GRASS data base files of the user-specified data type to standard output.

g.manual

Display the HTML man pages of GRASS

g.mapset

Change current mapset.

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.

g.mremove

Removes data base element files from the user's current mapset.

g.parser

Provides automated parser, GUI, and help support for GRASS scipts.

g.pnmcomp

Overlays multiple PPM image files

g.proj

Converts co-ordinate system descriptions (i.e. projection information) between various formats (including GRASS format). Can also be used to create GRASS locations.

g.region

Manages the boundary definitions for the geographic region.

g.remove

Removes data base element files from the user's current mapset.

g.rename

Renames data base element files in the user's current mapset.

g.setproj

Interactively reset the location's projection settings.

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.

v.buffer

Creates a buffer around features of given type (areas must contain centroid).

v.build.all

Rebuilds topology on all vector maps in the current mapset.

v.build

Creates topology for GRASS vector map.

v.build.polylines

Builds polylines from lines or boundaries.

v.category

Attach, delete or report vector categories to map geometry.

v.centroids

Adds missing centroids to closed boundaries.

v.class

Classifies attribute data, e.g. for thematic mapping

v.clean

Toolset for cleaning topology of vector map.

v.colors

Set color rules for features in a vector using a numeric attribute column.

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.

v.db.addcol

Adds one or more columns to the attribute table connected to a given vector map.

v.db.addtable

Creates and adds a new attribute table to a given layer of an existing vector map.

v.db.connect

Prints/sets DB connection for a vector map to attribute table.

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.

v.db.renamecol

Renames a column in the attribute table connected to a given vector map.

v.db.select

Prints vector map attributes.

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.

v.delaunay

Creates a Delaunay triangulation from an input vector map containing points or centroids.

v.digit

Interactive editing and digitization of vector maps.

v.dissolve

Dissolves boundaries between adjacent areas sharing a common category number or attribute.

v.distance

Finds the nearest element in vector map 'to' for elements in vector map 'from'.

v.drape

Converts vector map to 3D by sampling of elevation raster map.

v.edit

Edits a vector map, allows adding, deleting and modifying selected vector features.

v.external

Creates a new vector as a read-only link to OGR layer.

v.extract

Selects vector objects from an existing vector map and creates a new map containing only the selected objects.

v.extrude

Extrudes flat vector object to 3D with defined height.

v.generalize

Vector based generalization.

v.hull

Uses a GRASS vector points map to produce a convex hull vector map.

v.in.ascii

Creates a vector map from ASCII points file or ASCII vector file.

v.in.db

Creates new vector (points) map from database table containing coordinates.

v.in.dxf

Converts files in DXF format to GRASS vector map format.

v.in.e00

Import E00 file into a vector map.

v.info

Outputs basic information about a user-specified vector map.

v.in.garmin

Download waypoints, routes, and tracks from a Garmin GPS receiver into a vector map.

v.in.geonames

Imports geonames.org country files into a GRASS vector points map.

v.in.gns

Imports US-NGA GEOnet Names Server (GNS) country files into a GRASS vector points map.

v.in.gpsbabel

Import waypoints, routes, and tracks from a GPS receiver or GPS download file into a vector map.

v.in.mapgen

Import Mapgen or Matlab vector maps into GRASS.

v.in.ogr

Convert OGR vector layers to GRASS vector map.

v.in.region

Create a new vector from the 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.

v.in.wfs

Import GetFeature from WFS

v.kcv

Randomly partition points into test/train 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.

v.label

Creates paint labels for a vector map from attached attributes.

v.lidar.correction

Correction of the v.lidar.growing output. It is the last of the three algorithms for LIDAR filtering.

v.lidar.edgedetection

Detects the object's edges from a LIDAR data set.

v.lidar.growing

Building contour determination and Region Growing algorithm for determining the building inside

v.lrs.create

Create Linear Reference System

v.lrs.label

Create stationing from input lines, and linear reference system

v.lrs.segment

Creates points/segments from input lines, linear reference system and positions read from stdin or a file.

v.lrs.where

Finds line id and real km+offset for given points in vector map using linear reference system.

v.mkgrid

Creates a GRASS vector map of a user-defined 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.

v.net.alloc

Allocate subnets for nearest centres (direction from centre).

v.net

Performs network maintenance.

v.net.iso

Splits net by cost isolines.

v.net.path

Finds shortest path on vector network.

v.net.salesman

Creates a cycle connecting given nodes (Traveling salesman problem).

v.net.steiner

Create Steiner tree for the network and given terminals

v.net.visibility

Visibility graph construction.

v.normal

Tests for normality for points.

v.out.ascii

Converts a GRASS binary vector map to a GRASS ASCII vector map.

v.out.dxf

Exports GRASS vector map layers to DXF file format.

v.out.gpsbabel

Exports a vector map to a GPS receiver or file format supported by GpsBabel.

v.outlier

Removes outliers from vector point data.

v.out.ogr

Converts to one of the supported OGR vector formats.

v.out.pov

Converts to POV-Ray format, GRASS x,y,z -> POV-Ray x,z,y

v.out.svg

Exports a GRASS vector map to SVG.

v.out.vtk

Converts a GRASS binary vector map to VTK ASCII output.

v.overlay

Overlays two vector maps.

v.parallel

Creates parallel line to input vector lines.

v.patch

Create a new vector map layer by combining other vector map layers.

v.perturb

Random location perturbations of GRASS vector points

v.proj

Allows projection conversion of vector maps.

v.qcount

Indices for quadrat counts of sites lists.

v.random

Randomly generate a 2D/3D vector points map.

v.rast.stats

Calculates univariate statistics from a GRASS raster map based on vector polygons and uploads statistics to new attribute columns.

v.reclass

Changes vector category values for an existing vector map according to results of SQL queries or a value in attribute table column.

v.report

Reports geometry statistics for vectors.

v.sample

Samples a raster map at vector point locations.

v.segment

Creates points/segments from input vector lines and positions.

v.select

Selects features from vector map (A) by features from other vector map (B).

v.split

Split lines to shorter segments.

v.support

Updates vector map metadata.

v.surf.bspline

Bicubic or bilinear spline interpolation with Tykhonov regularization.

v.surf.idw

Surface interpolation from vector point data by Inverse Distance Squared Weighting.

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.

v.to.3d

Performs transformation of 2D vector features to 3D.

v.to.db

Populates database values from vector features.

v.to.points

Create points along input lines in new vector with 2 layers.

v.to.rast3

Converts a binary GRASS vector map (only points) layer into a 3D GRASS raster map layer.

v.to.rast

Converts a binary GRASS vector map into a GRASS raster map .

v.transform

Performs an affine transformation (shift, scale and rotate, or GPCs) on vector map.

v.type

Change the type of geometry elements.

v.univar

Calculates univariate statistics for attribute. Variance and standard deviation is calculated only for points if specified.

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.

v.voronoi

Creates a Voronoi diagram from an input vector map containing points or centroids.

v.what

Queries a vector map layer at given locations.

v.what.rast

Uploads raster values at positions of vector points to the table.

v.what.vect

Uploads vector values at positions of vector points to the table.

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.

r.bilinear

Bilinear interpolation utility for raster map layers.

r.bitpattern

Compares bit patterns with a raster map.

r.blend

Blends color components of two raster maps by a given ratio.

r.buffer

Creates a raster map layer showing buffer zones surrounding cells that contain non-NULL category values.

r.carve

Takes vector stream data, transforms it to raster and subtracts depth from the output DEM.

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 layer.

r.colors.stddev

Set color rules based on stddev from a 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.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.

r.distance

Locates the closest points between objects in two raster maps.

r.drain

Traces a flow through an elevation model on a raster map.

r.external

Link GDAL supported raster file to a binary raster map layer.

r.fill.dir

Filters and generates a depressionless elevation map and a flow direction map from a given elevation layer.

r.fillnulls

Fills no-data areas in raster maps using v.surf.rst splines interpolation

r.flow

Construction of slope curves (flowlines), flowpath lengths, and flowline densities (upslope areas) from a raster digital elevation model (DEM)

r.grow.distance

Generates a raster map layer of distance to features in input layer.

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 raster map layers combining hue, intensity and saturation (HIS) values from user-specified input raster map layers.

r.horizon

Horizon angle computation from a digital elevation model.

r.in.arc

Converts an ESRI ARC/INFO ascii raster file (GRID) into a (binary) raster map layer.

r.in.ascii

Converts ASCII raster file to binary raster map layer.

r.in.aster

Georeference, rectify and import Terra-ASTER imagery and relative DEM's using gdalwarp.

r.in.bin

Import a binary raster file into a GRASS raster map layer.

r.info

Output basic information about a raster map layer.

r.in.gdal

Import GDAL supported raster file into a binary raster map layer.

r.in.gridatb

Imports GRIDATB.FOR map file (TOPMODEL) into GRASS raster map

r.in.mat

Imports a binary MAT-File(v4) to a GRASS raster.

r.in.poly

Creates raster maps from ASCII polygon/line/point data files.

r.in.srtm

Import SRTM HGT files into GRASS

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.

r.kappa

Calculate error matrix and kappa parameter for accuracy assessment of classification result.

r.lake

Fills lake from seed at given level.

r.le.patch

Calculates attribute, patch size, core (interior) size, shape, fractal dimension, and perimeter measures for sets of patches in a landscape.

r.le.pixel

Contains a set of measures for attributes, diversity, texture, juxtaposition, and edge.

r.le.setup

Interactive tool used to setup the sampling and analysis framework that will be used by the other r.le programs.

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.

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

Landscape structure analysis package overview.

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.richness

Calculates dominance's diversity index on a raster map

r.li.setup

Configuration editor for r.li.'index'

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.los

Line-of-sight raster analysis program.

r.mapcalc

Raster map calculator.

r.mapcalculator

Calculate new raster map from a r.mapcalc expression.

r.mask

Create a MASK for limiting raster operation

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.fp

Raster map matrix filter.

r.mfilter

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.arc

Converts a raster map layer into an ESRI ARCGRID file.

r.out.ascii

Converts a raster map layer into an 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.gdal.sh

Exports GRASS raster 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

Raster File Series to MPEG Conversion Program.

r.out.png

Export GRASS raster as non-georeferenced PNG image format.

r.out.pov

Converts a raster map layer into a height-field file for POVRAY.

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.

r.out.ppm

Converts a GRASS raster map to a PPM image file at the pixel resolution of the currently defined region.

r.out.tiff

Exports a GRASS raster map to a 8/24bit TIFF image file at the pixel resolution of the currently defined region.

r.out.vrml

Export a raster map to the Virtual Reality Modeling Language (VRML)

r.out.vtk

Converts raster maps into the VTK-Ascii format

r.out.xyz

Export a raster map to a text file as x,y,z values based on cell centers.

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.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 one 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

Creates a new map layer whose category values are based upon a reclassification of the categories in an existing raster map layer.

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.report

Reports statistics for raster map layers.

r.resamp.interp

Resamples raster map layers to a finer grid using interpolation.

r.resample

GRASS raster map layer data resampling capability.

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.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.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.

r.series

Makes each output cell value a function of the values assigned to the corresponding cells in the input raster map layers.

r.shaded.relief

Creates shaded relief map from an elevation map (DEM).

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 map layers of slope, aspect, curvatures and partial derivatives from a raster map layer of true elevation values. Aspect is calculated counterclockwise from east.

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.

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 layers.

r.sum

Sums up the raster cell values.

r.sun

Solar irradiance and irradiation model.

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.

r.support

Allows creation and/or modification of raster map layer support files.

r.support.stats

Update raster map statistics

r.surf.area

Surface area estimation for rasters.

r.surf.contour

Surface generation program from rasterized contours.

r.surf.fractal

Creates a fractal surface of a given fractal dimension.

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.

r.surf.idw2

Surface generation program.

r.surf.idw

Surface interpolation utility for raster map.

r.surf.random

Produces a raster map layer of uniform random deviates whose range can be expressed by the user.

r.terraflow

Flow computation for massive grids (Float version).

r.texture

Generate images with textural features from a raster map.

r.thin

Thins non-zero cells that denote linear features in a raster map layer.

r.tileset

Produces tilings of the source projection for use in the destination region and projection.

r.timestamp

Print/add/remove a timestamp for a raster map.

r.topidx

Creates topographic index [ln(a/tan(beta))] map from elevation map.

r.topmodel

Simulates TOPMODEL which is a physically based hydrologic model.

r.to.rast3elev

Creates a 3D volume map based on 2D elevation and value raster maps.

r.to.rast3

Converts 2D raster map slices to one 3D raster volume map.

r.to.vect

Converts a raster map into a vector map layer.

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.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.

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.

r.water.outlet

Watershed basin creation program.

r.watershed

Watershed basin analysis program.

r.what.color

Queries colors for a raster map layer.

r.what

Queries raster map layers on their category values and category labels.

r3.cross.rast

Creates cross section 2D raster map from 3d raster map based on 2D elevation map

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

r3.info

Outputs basic information about a user-specified 3D raster map layer.

r3.in.v5d

import of 3-dimensional Vis5D files (i.e. the v5d file with 1 variable and 1 time step)

r3.mapcalc

3D raster map calculator.

r3.mapcalculator

Calculates new grid3D volume from r3.mapcalc expression.

r3.mask

Establishes the current working 3D raster 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.

r3.out.ascii

Converts a 3D raster map layer into an ASCII text file

r3.out.v5d

Export of GRASS 3D raster map to 3-dimensional Vis5D file.

r3.out.vtk

Converts 3D raster maps (G3D) into the VTK-Ascii format

r3.stats

Generates volume statistics for raster3d maps.

r3.timestamp

Print/add/remove a timestamp for a 3D raster map

r3.to.rast

Converts 3D raster maps to 2D raster maps

r3.univar

Calculates univariate statistics from the non-null 3d cells of a raster3d map.

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

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.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.m

Display manager for GRASS

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.

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.

d.rast

Displays and overlays raster map layers in the active display frame on the graphics monitor.

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.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

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

Displays vector data in the active frame on the graphics monitor.

d.vect.thematic

Displays thematic vector map

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.

db.columns

List all columns for a given table.

db.connect

Prints/sets general DB connection for current mapset and exits.

db.copy

Copy a table.

db.describe

Describes a table in detail.

db.drivers

List all database drivers.

db.dropcol

Drops a column from selected attribute table

db.droptable

Drops an attribute table.

db.execute

Executes any SQL statement.

db.in.ogr

Imports attribute tables in various formats.

db.login

Sets user/password for driver/database.

db.out.ogr

Exports attribute tables into various formats.

db.select

Selects data from table.

db.tables

Lists all tables for a given database.

db.test

Test database driver, database must exist and set by db.connect.

m.cogo

A simple utility for converting bearing and distance measurements to coordinates and vice versa.

m.proj

Convert coordinates from one projection to another (cs2cs frontend).

ps.map

Hardcopy PostScript map output utility.

i.atcorr

Performs atmospheric correction using the 6S algorithm.

i.cca

Canonical components analysis (cca) program for image processing.

i.class

Generates spectral signatures for an image by allowing the user to outline regions of interest.

i.cluster

Generates spectral signatures for land cover types in an image using a clustering algorithm.

i.fft

Fast Fourier Transform (FFT) for image processing.

i.fusion.brovey

Brovey transform to merge multispectral and high-res panchromatic channels

i.gensig

Generates statistics for i.maxlik from raster map.

i.gensigset

Generates statistics for i.smap from raster map.

i.group

Creates, edits, and lists groups and subgroups of imagery files.

i.his.rgb

Transforms raster maps from HIS (Hue-Intensity-Saturation) color space to RGB (Red-Green-Blue) color space.

i.ifft

Inverse Fast Fourier Transform (IFFT) for image processing.

i.image.mosaic

Mosaics up to 4 images and extends colormap; creates map *.mosaic

i.in.spotvgt

Import of SPOT VGT NDVI file into a raster map

i.landsat.rgb

Performs auto-balancing of colors for LANDSAT images.

i.maxlik

Classifies the cell spectral reflectances in imagery data.

i.oif

Calculates Optimum-Index-Factor table for LANDSAT TM bands 1-5, & 7

i.ortho.photo

Menu driver for the photo imagery programs.

i.pca

Principal components analysis (pca) program for image processing.

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.

i.rgb.his

Transforms raster maps from RGB (Red-Green-Blue) color space to HIS (Hue-Intensity-Saturation) color space.

i.smap

Performs contextual image classification using sequential maximum a posteriori (SMAP) estimation.

i.spectral

Displays spectral response at user specified locations in group or images.

i.target

Targets an imagery group to a GRASS location and mapset.

i.tasscap

Tasseled Cap (Kauth Thomas) transformation for LANDSAT-TM data

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.