GRASS GIS 8.3.3dev Reference Manual: Topic statistics

Note: This document is for an older version of GRASS GIS that has been discontinued. You should upgrade, and read the current manual page.

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.object.geometry	Calculates geometry parameters for raster objects.
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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