GRASS logo

Note: A new GRASS GIS stable version has been released: GRASS GIS 7.4, available here.
Updated manual page: here

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

Table of contents

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 14:29:36 -0700 (Sun, 07 Aug 2016) $

SOURCE CODE

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

Note: A new GRASS GIS stable version has been released: GRASS GIS 7.4, available here.
Updated manual page: here

Main index | Raster index | Topics index | Keywords index | Full index

© 2003-2018 GRASS Development Team, GRASS GIS 7.0.7svn Reference Manual