r.stats.zonal.1grass man page

r.stats.zonal — Calculates category or object oriented statistics (accumulator-based statistics).

Keywords

raster, statistics, zonal statistics

Synopsis

r.stats.zonal
r.stats.zonal --help
r.stats.zonal [-cr] base=name cover=name method=string output=name  [--overwrite]  [--help]  [--verbose]  [--quiet]  [--ui]

Flags

-c

Cover values extracted from the category labels of the cover map

-r

Create reclass map with statistics as category labels

--overwrite

Allow output files to overwrite existing files

--help

Print usage summary

--verbose

Verbose module output

--quiet

Quiet module output

--ui

Force launching GUI dialog

Parameters

base=name [required]

Name of base raster map

cover=name [required]

Name of cover raster map

method=string [required]

Method of object-based statistic
Options: count, sum, min, max, range, average, avedev, variance, stddev, skewness, kurtosis, variance2, stddev2, skewness2, kurtosis2
count: Count of values in specified objects
sum: Sum of values in specified objects
min: Minimum of values in specified objects
max: Maximum of values in specified objects
range: Range of values (max - min) in specified objects
average: Average of values in specified objects
avedev: Average deviation of values in specified objects
variance: Variance of values in specified objects
stddev: Standard deviation of values in specified objects
skewness: Skewness of values in specified objects
kurtosis: Kurtosis of values in specified objects
variance2: (2-pass) Variance of values in specified objects
stddev2: (2-pass) Standard deviation of values in specified objects
skewness2: (2-pass) Skewness of values in specified objects
kurtosis2: (2-pass) Kurtosis of values in specified objects

output=name [required]

Resultant raster map

Description

r.stats.zonal is a tool to analyse exploratory statistics of a floating-point "cover layer" according to how it intersects with objects in a "base layer". A variety of standard statistical measures are possible (called "zonal statistics" in some GIS).

Notes

r.stats.zonal is intended to be a partial replacement for r.statistics, with support for floating-point cover maps at the expense of not supporting quantiles. For this, see r.stats.quantile.

See Also

r.quantile, r.stats.quantile, r.statistics

Author

Glynn Clements

Last changed: $Date: 2016-08-07 23:28:59 +0200 (Sun, 07 Aug 2016) $

Source Code

Available at: r.stats.zonal source code (history)

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© 2003-2017 GRASS Development Team, GRASS GIS 7.2.1 Reference Manual

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