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<H2> GRASS Toolbox raster data modules </H2> <P> 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. <P> <BR><P></P> <DIV ALIGN="CENTER"> <DIV ALIGN="CENTER"> </DIV> <P> <BR> <A NAME="81"></A> <TABLE CELLPADDING=3 BORDER="1"> <CAPTION><STRONG>Table 19:</STRONG> GRASS Toolbox: Develop raster map modules</CAPTION> <TR><TD ALIGN="CENTER" COLSPAN=2><SPAN><SPAN CLASS="textbf">Develop raster map modules in the GRASS Toolbox</SPAN></SPAN></TD> </TR> <TR><TH ALIGN="LEFT" VALIGN="TOP" WIDTH=113><SPAN CLASS="textbf">Module name</SPAN></TH> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340><SPAN CLASS="textbf">Purpose</SPAN></TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.compress</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Compresses and decompresses raster maps</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.region.region</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Sets the boundary definitions to current or default region</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.region.raster</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Sets the boundary definitions from existent raster map</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.region.vector</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Sets the boundary definitions from existent vector map</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.region.edge</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Sets the boundary definitions by edge (n-s-e-w)</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.region.alignTo</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Sets region to align to a raster map</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.null.val</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Transform cells with value in null cells</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.null.to</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Transform null cells in value cells</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.quant</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>This routine produces the quantization file for a floating-point map</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.resamp.stats</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Resamples raster map layers using aggregation</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.resamp.interp</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Resamples raster map layers using interpolation</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.resample</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>GRASS raster map layer data resampling capability. Before you must set new resolution</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.resamp.rst</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Reinterpolates and computes topographic analysis using regularized spline with tension and smoothing</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.support</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Allows creation and/or modification of raster map layer support files</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.support.stats</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Update raster map statistics</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.proj</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Re-project a raster map from one location to the current location</TD> </TR> </TABLE> </DIV> <BR> <P> <BR><P></P> <DIV ALIGN="CENTER"> <DIV ALIGN="CENTER"> </DIV> <P> <BR> <A NAME="93"></A> <TABLE CELLPADDING=3 BORDER="1"> <CAPTION><STRONG>Table 20:</STRONG> GRASS Toolbox: Raster color management modules</CAPTION> <TR><TD ALIGN="CENTER" COLSPAN=2><SPAN><SPAN CLASS="textbf">Raster color management modules in the GRASS Toolbox</SPAN></SPAN></TD> </TR> <TR><TH ALIGN="LEFT" VALIGN="TOP" WIDTH=113><SPAN CLASS="textbf">Module name</SPAN></TH> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340><SPAN CLASS="textbf">Purpose</SPAN></TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.colors.table</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Set raster color table from setted tables</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.colors.rules</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Set raster color table from setted rules</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.colors.rast</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Set raster color table from existing raster</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.blend</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Blend color components for two raster maps by given ratio</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.composite</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Blend red, green, raster layers to obtain one color raster</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.his</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Generates red, green and blue raster map layers combining hue, intensity, and saturation (his) values from user-specified input raster map layers</TD> </TR> </TABLE> </DIV> <BR> <P> <BR><P></P> <DIV ALIGN="CENTER"> <DIV ALIGN="CENTER"> </DIV> <P> <BR> <A NAME="105"></A> <TABLE CELLPADDING=3 BORDER="1"> <CAPTION><STRONG>Table 21:</STRONG> GRASS Toolbox: Spatial raster analysis modules</CAPTION> <TR><TD ALIGN="CENTER" COLSPAN=2><SPAN><SPAN CLASS="textbf">Spatial raster analysis modules in the GRASS Toolbox</SPAN></SPAN></TD> </TR> <TR><TH ALIGN="LEFT" VALIGN="TOP" WIDTH=113><SPAN CLASS="textbf">Module name</SPAN></TH> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340><SPAN CLASS="textbf">Purpose</SPAN></TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.buffer</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Raster buffer</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.mask</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Create a MASK for limiting raster operation</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.mapcalc</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Raster map calculator</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.mapcalculator</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Simple map algebra</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.neighbors</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Raster neighbors analyses</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>v.neighbors</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Count of neighbouring points</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.cross</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Create a cross product of the category value from multiple raster map layers</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.series</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Makes each output cell a function of the values assigned to the corresponding cells in the output raster map layers</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.patch</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Create a new raster map by combining other raster maps</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.statistics</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Category or object oriented statistics</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.cost</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Outputs a raster map layer showing the cumulative cost of moving between different geographic locations on an input raster map layer whose cell category values represent cost</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.drain</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Traces a flow through an elevation model on a raster map layer</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.shaded.relief</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Create shaded map</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.slope.aspect.slope</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Generate slope map from DEM (digital elevation model)</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.slope.aspect.aspect</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Generate aspect map from DEM (digital elevation model)</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.param.scale</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Extracts terrain parameters from a DEM</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.texture</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Generate images with textural features from a raster map (first serie of indices)</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.texture.bis</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Generate images with textural features from a raster map (second serie of indices)</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.los</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Line-of-sigth raster analysis</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.clump</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Recategorizes into unique categories contiguous cells</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.grow</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Generates a raster map layer with contiguous areas grown by one cell</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.thin</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Thin no-zero cells that denote line features</TD> </TR> </TABLE> </DIV> <BR> <P> <BR><P></P> <DIV ALIGN="CENTER"> <DIV ALIGN="CENTER"> </DIV> <P> <BR> <A NAME="117"></A> <TABLE CELLPADDING=3 BORDER="1"> <CAPTION><STRONG>Table 22:</STRONG> GRASS Toolbox: Surface management modules</CAPTION> <TR><TD ALIGN="CENTER" COLSPAN=2><SPAN><SPAN CLASS="textbf">Surface management modules in the GRASS Toolbox</SPAN></SPAN></TD> </TR> <TR><TH ALIGN="LEFT" VALIGN="TOP" WIDTH=113><SPAN CLASS="textbf">Module name</SPAN></TH> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340><SPAN CLASS="textbf">Purpose</SPAN></TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.random</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Creates a random vector point map contained in a raster</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.random.cells</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Generates random cell values with spatial dependence</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>v.kernel</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Gaussian kernel density</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.contour</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Produces a contours vector map with specified step from a raster map</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.contour2</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Produces a contours vector map of specified contours from a raster map</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.surf.fractal</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Creates a fractal surface of a given fractal dimension</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.surf.gauss</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>GRASS module to produce a raster map layer of gaussian deviates whose mean and standard deviation can be expressed by the user</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.surf.random</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Produces a raster map layer of uniform random deviates whose range can be expressed by the user</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.bilinear</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Bilinear interpolation utility for raster map layers</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>v.surf.bispline</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Bicubic or bilinear spline interpolation with Tykhonov regularization</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.surf.idw</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Surface interpolation utility for raster map layers</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.surf.idw2</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Surface generation program</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.surf.contour</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Surface generation program from rasterized contours</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>v.surf.idw</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Interpolate attribute values (IDW)</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>v.surf.rst</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Interpolate attribute values (RST)</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.fillnulls</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Fills no-data areas in raster maps using v.surf.rst splines interpolation</TD> </TR> </TABLE> </DIV> <BR> <P> <BR><P></P> <DIV ALIGN="CENTER"> <DIV ALIGN="CENTER"> </DIV> <P> <BR> <A NAME="129"></A> <TABLE CELLPADDING=3 BORDER="1"> <CAPTION><STRONG>Table 23:</STRONG> GRASS Toolbox: Change raster category values and labels modules</CAPTION> <TR><TD ALIGN="CENTER" COLSPAN=2><SPAN><SPAN CLASS="textbf">Raster category and label modules in the GRASS Toolbox</SPAN></SPAN></TD> </TR> <TR><TH ALIGN="LEFT" VALIGN="TOP" WIDTH=113><SPAN CLASS="textbf">Module name</SPAN></TH> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340><SPAN CLASS="textbf">Purpose</SPAN></TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.reclass.area.greater</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Reclasses a raster map greater than user specified area size (in hectares)</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.reclass.area.lesser</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Reclasses a raster map less than user specified area size (in hectares)</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.reclass</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Reclass a raster using a reclassification rules file</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.recode</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Recode raster maps</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.rescale</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Rescales the range of category values in a raster map layer</TD> </TR> </TABLE> </DIV> <BR> <P> <BR><P></P> <DIV ALIGN="CENTER"> <DIV ALIGN="CENTER"> </DIV> <P> <BR> <A NAME="141"></A> <TABLE CELLPADDING=3 BORDER="1"> <CAPTION><STRONG>Table 24:</STRONG> GRASS Toolbox: Hydrologic modelling modules</CAPTION> <TR><TD ALIGN="CENTER" COLSPAN=2><SPAN><SPAN CLASS="textbf">Hydrologic modelling modules in the GRASS Toolbox</SPAN></SPAN></TD> </TR> <TR><TH ALIGN="LEFT" VALIGN="TOP" WIDTH=113><SPAN CLASS="textbf">Module name</SPAN></TH> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340><SPAN CLASS="textbf">Purpose</SPAN></TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.carve</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Takes vector stream data, transforms it to raster, and subtracts depth from the output DEM</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.fill.dir</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Filters and generates a depressionless elevation map and a flow direction map from a given elevation layer</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.lake.xy</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Fills lake from seed point at given level</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.lake.seed</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Fills lake from seed at given level</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.topidx</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Creates a 3D volume map based on 2D elevation and value raster maps</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.basins.fill</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Generates a raster map layer showing watershed subbasins</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.water.outlet</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Watershed basin creation program</TD> </TR> </TABLE> </DIV> <BR> <P> <BR><P></P> <DIV ALIGN="CENTER"> <DIV ALIGN="CENTER"> </DIV> <P> <BR> <A NAME="153"></A> <TABLE CELLPADDING=3 BORDER="1"> <CAPTION><STRONG>Table 25:</STRONG> GRASS Toolbox: Reports and statistic analysis modules</CAPTION> <TR><TD ALIGN="CENTER" COLSPAN=2><SPAN><SPAN CLASS="textbf">Reports and statistic analysis modules in the GRASS Toolbox</SPAN></SPAN></TD> </TR> <TR><TH ALIGN="LEFT" VALIGN="TOP" WIDTH=113><SPAN CLASS="textbf">Module name</SPAN></TH> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340><SPAN CLASS="textbf">Purpose</SPAN></TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.category</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Prints category values and labels associated with user-specified raster map layers</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.sum</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Sums up the raster cell values</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.report</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Reports statistics for raster map layers</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.average</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Finds the average of values in a cover map within areas assigned the same category value in a user-specified base map</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.median</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Finds the median of values in a cover map within areas assigned the same category value in a user-specified base map</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.mode</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Finds the mode of values in a cover map within areas assigned the same category value in a user-specified base map.reproject raster image</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.volume</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Calculates the volume of data clumps, and produces a GRASS vector points map containing the calculated centroids of these clumps</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.surf.area</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Surface area estimation for rasters</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.univar</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Calculates univariate statistics from the non-null cells of a raster map</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.covar</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Outputs a covariance/correlation matrix for user-specified raster map layer(s)</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.regression.line</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Calculates linear regression from two raster maps: y = a + b * x</TD> </TR> <TR><TD ALIGN="LEFT" VALIGN="TOP" WIDTH=113>r.coin</TD> <TD ALIGN="LEFT" VALIGN="TOP" WIDTH=340>Tabulates the mutual occurrence (coincidence) of categories for two raster map layers</TD> </TR> </TABLE> </DIV> <BR> <P> <P>
GRASS Toolbox raster data modules
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