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r.stats.zonal(1grass) Grass User's Manual r.stats.zonal(1grass)

NAME

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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© 2003-2016 GRASS Development Team, GRASS GIS 7.2.0 Reference Manual

GRASS 7.2.0