Pages du manuel Linux : Commandes destinées aux utilisateurs

r.out.ppm
Converts a GRASS raster file to a PPM image file at the pixel resolution of the CURRENTLY DEFINED REGION.
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.tiff
Exports a GRASS raster file to a 8/24bit TIFF image file at the pixel resolution of the currently defined region.
r.param.scale
Extracts terrain parameters from a DEM. Uses a multi-scalar approach by taking fitting quadratic parameters to any size window (via least squares)
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-project a raster map from one location to the current location.
r.quant
This routine produces the quantization file for a floating-point map.
r.random
Creates a raster map layer and vector point map containing randomly located sites.
r.random.cells
Generates random cell values with spatial dependence.
r.random.surface
Generates random surface(s) with spatial dependence.
r.reclass
Creates a new map layer whose category values are based upon the user's reclassification of categories in an existing raster map layer.
r.reclass.area
Reclasses a raster map greater or less than user specified area size (in hectares)
r.recode
Recode 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.rst
Reinterpolates and computes topographic analysis from input raster file to a new raster file (possibly with different resolution) using regularized spline with tension and smoothing.
r.resample
GRASS raster map layer data resampling capability.
r.rescale
Rescales the range of category values in a raster map layer.
r.rescale.eq
Rescales histogram equalized the range of categoryvalues 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.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. It optionally produces raster maps to contain backlink UTM coordinates for tracing spread paths.
r.spreadpath
Recursively traces the least cost path backwards to cells from which the cumulative cost was determined.
r.statistics
Category or object oriented statistics.
r.stats
Generates area statistics for raster map layers.
r.sum
Sums up the raster cell values.
r.sun
Computes direct (beam), diffuse and reflected solar irradiation raster maps for given day, latitude, surface and atmospheric conditions. Solar parameters (e.g. sunrise, sunset times, declination, extraterrestrial irradiance, daylight length) are saved in a local text file. Alternatively, a local time can be specified to compute solar incidence angle and/or irradiance raster maps. The shadowing effect of the topography is optionally incorporated.
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.surf.area
Surface area estimation for rasters.
r.surf.contour
Surface generation program from rasterized contours.
r.surf.fractal
GRASS module to create a fractal surface of a given fractal dimension. Uses spectral synthesis method. Can create intermediate layers showing the build up of different spectral coefficients (see Saupe, pp.106-107 for an example of this). Use this module to generate naturally looking synthetical elevation models (DEM).
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.idw
Surface interpolation utility for raster map layers.
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.
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.timestamp
Print/add/remove a timestamp for a raster map.
r.to.vect
Converts a raster map into a vector map layer.
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.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.water.outlet
Watershed basin creation program.