GRASS Toolbox raster data modules
提供: OSGeo.JP Wiki
GRASS Toolbox raster data modules
This Section lists all graphical dialogs in the GRASS Toolbox to work with
and analyse raster data in a currently selected GRASS location and mapset.
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| Develop raster map modules in the GRASS Toolbox | |
| Module name | Purpose |
|---|---|
| r.compress | Compresses and decompresses raster maps |
| r.region.region | Sets the boundary definitions to current or default region |
| r.region.raster | Sets the boundary definitions from existent raster map |
| r.region.vector | Sets the boundary definitions from existent vector map |
| r.region.edge | Sets the boundary definitions by edge (n-s-e-w) |
| r.region.alignTo | Sets region to align to a raster map |
| r.null.val | Transform cells with value in null cells |
| r.null.to | Transform null cells in value cells |
| r.quant | This routine produces the quantization file for a floating-point map |
| r.resamp.stats | Resamples raster map layers using aggregation |
| r.resamp.interp | Resamples raster map layers using interpolation |
| r.resample | GRASS raster map layer data resampling capability. Before you must set new resolution |
| r.resamp.rst | Reinterpolates and computes topographic analysis using regularized spline with tension and smoothing |
| r.support | Allows creation and/or modification of raster map layer support files |
| r.support.stats | Update raster map statistics |
| r.proj | Re-project a raster map from one location to the current location |
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| Raster color management modules in the GRASS Toolbox | |
| Module name | Purpose |
|---|---|
| r.colors.table | Set raster color table from setted tables |
| r.colors.rules | Set raster color table from setted rules |
| r.colors.rast | Set raster color table from existing raster |
| r.blend | Blend color components for two raster maps by given ratio |
| r.composite | Blend red, green, raster layers to obtain one color raster |
| r.his | Generates red, green and blue raster map layers combining
hue, intensity, and saturation (his) values from user-specified inputraster map layers |
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| Spatial raster analysis modules in the GRASS Toolbox | |
| Module name | Purpose |
|---|---|
| r.buffer | Raster buffer |
| r.mask | Create a MASK for limiting raster operation |
| r.mapcalc | Raster map calculator |
| r.mapcalculator | Simple map algebra |
| r.neighbors | Raster neighbors analyses |
| v.neighbors | Count of neighbouring points |
| r.cross | Create a cross product of the category value from multiple raster map layers |
| r.series | Makes each output cell a function of the values assigned to the corresponding cells in the output raster map layers |
| r.patch | Create a new raster map by combining other raster maps |
| r.statistics | Category or object oriented statistics |
| r.cost | Outputs a raster map layer showing the cumulative cost of
moving between different geographic locations on an input raster map layerwhose cell category values represent cost |
| r.drain | Traces a flow through an elevation model on a raster map layer |
| r.shaded.relief | Create shaded map |
| r.slope.aspect.slope | Generate slope map from DEM (digital elevation model) |
| r.slope.aspect.aspect | Generate aspect map from DEM (digital elevation model) |
| r.param.scale | Extracts terrain parameters from a DEM |
| r.texture | Generate images with textural features from a raster map (first serie of indices) |
| r.texture.bis | Generate images with textural features from a raster map (second serie of indices) |
| r.los | Line-of-sigth raster analysis |
| r.clump | Recategorizes into unique categories contiguous cells |
| r.grow | Generates a raster map layer with contiguous areas grown by one cell |
| r.thin | Thin no-zero cells that denote line features |
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| Surface management modules in the GRASS Toolbox | |
| Module name | Purpose |
|---|---|
| r.random | Creates a random vector point map contained in a raster |
| r.random.cells | Generates random cell values with spatial dependence |
| v.kernel | Gaussian kernel density |
| r.contour | Produces a contours vector map with specified step from a raster map |
| r.contour2 | Produces a contours vector map of specified contours from a raster map |
| 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 theuser |
| r.surf.random | Produces a raster map layer of uniform random deviates whose range can be expressed by the user |
| r.bilinear | Bilinear interpolation utility for raster map layers |
| v.surf.bispline | Bicubic or bilinear spline interpolation with Tykhonov regularization |
| r.surf.idw | Surface interpolation utility for raster map layers |
| r.surf.idw2 | Surface generation program |
| r.surf.contour | Surface generation program from rasterized contours |
| v.surf.idw | Interpolate attribute values (IDW) |
| v.surf.rst | Interpolate attribute values (RST) |
| r.fillnulls | Fills no-data areas in raster maps using v.surf.rst splines interpolation |
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| Raster category and label modules in the GRASS Toolbox | |
| Module name | Purpose |
|---|---|
| r.reclass.area.greater | Reclasses a raster map greater than user specified area size (in hectares) |
| r.reclass.area.lesser | Reclasses a raster map less than user specified area size (in hectares) |
| r.reclass | Reclass a raster using a reclassification rules file |
| r.recode | Recode raster maps |
| r.rescale | Rescales the range of category values in a raster map layer |
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| Hydrologic modelling modules in the GRASS Toolbox | |
| Module name | Purpose |
|---|---|
| r.carve | Takes vector stream data, transforms it to raster, and subtracts depth from the output DEM |
| r.fill.dir | Filters and generates a depressionless elevation map and a flow direction map from a given elevation layer |
| r.lake.xy | Fills lake from seed point at given level |
| r.lake.seed | Fills lake from seed at given level |
| r.topidx | Creates a 3D volume map based on 2D elevation and value raster maps |
| r.basins.fill | Generates a raster map layer showing watershed subbasins |
| r.water.outlet | Watershed basin creation program |
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| Reports and statistic analysis modules in the GRASS Toolbox | |
| Module name | Purpose |
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| r.category | Prints category values and labels associated with user-specified raster map layers |
| r.sum | Sums up the raster cell values |
| r.report | Reports statistics for raster map layers |
| 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.median | Finds the median of values in a cover map within areas assigned the same category value in a user-specified base map |
| r.mode | Finds the mode of values in a cover map within areas
assigned the same category value in a user-specified base map.reprojectraster image |
| r.volume | Calculates the volume of data clumps, and produces a GRASS vector points map containing the calculated centroids of these clumps |
| r.surf.area | Surface area estimation for rasters |
| r.univar | Calculates univariate statistics from the non-null cells of a raster map |
| r.covar | Outputs a covariance/correlation matrix for user-specified raster map layer(s) |
| r.regression.line | Calculates linear regression from two raster maps: y = a + b * x |
| r.coin | Tabulates the mutual occurrence (coincidence) of categories for two raster map layers |
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