Topic: statistics

d.correlate		Prints a graph of the correlation between raster maps (in pairs).
db.univar		Calculates univariate statistics on selected table column.
i.cca		Canonical components analysis (CCA) program for image processing.
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.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.kappa		Calculates error matrix and kappa parameter for accuracy assessment of classification result.
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.quant		Produces the quantization file for a floating-point map.
r.reclass.area		Reclasses a raster map greater or less than user specified area size (in hectares).
r.regression.line		Calculates linear regression from two raster maps: y = a + b*x.
r.regression.multi		Calculates multiple linear regression from raster maps.
r.report		Reports statistics for raster maps.
r.statistics		Calculates category or object oriented statistics.
r.stats		Generates area statistics for raster map.
r.stats.quantile		Compute category quantiles using two passes.
r.stats.zonal		Calculates category or object oriented statistics (accumulator-based statistics).
r.support.stats		Update raster map statistics
r.univar		Calculates univariate statistics from the non-null cells of a raster map.
r3.stats		Generates volume statistics for 3D raster maps.
r3.univar		Calculates univariate statistics from the non-null cells of a 3D raster map.
t.rast.univar		Calculates univariate statistics from the non-null cells for each registered raster map of a space time raster dataset.
t.rast3d.univar		Calculates univariate statistics from the non-null cells for each registered 3D raster map of a space time 3D raster dataset.
t.vect.univar		Calculates univariate statistics of attributes for each registered vector map of a space time vector dataset
v.db.univar		Calculates univariate statistics on selected table column for a GRASS vector map.
v.kcv		Randomly partition points into test/train sets.
v.normal		Tests for normality for vector points.
v.outlier		Removes outliers from vector point data.
v.qcount		Indices for quadrat counts of vector point lists.
v.rast.stats		Calculates univariate statistics from a raster map based on a vector map and uploads statistics to new attribute columns.
v.univar		Calculates univariate statistics of vector map features.

See also the corresponding keyword statistics for additional references.

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