.TH r.stats.zonal 1grass "" "GRASS 7.2.0" "Grass User's Manual"
.SH NAME
\fI\fBr.stats.zonal\fR\fR  \- Calculates category or object oriented statistics (accumulator\-based statistics).
.SH KEYWORDS
raster, statistics, zonal statistics
.SH SYNOPSIS
\fBr.stats.zonal\fR
.br
\fBr.stats.zonal \-\-help\fR
.br
\fBr.stats.zonal\fR [\-\fBcr\fR] \fBbase\fR=\fIname\fR \fBcover\fR=\fIname\fR \fBmethod\fR=\fIstring\fR \fBoutput\fR=\fIname\fR  [\-\-\fBoverwrite\fR]  [\-\-\fBhelp\fR]  [\-\-\fBverbose\fR]  [\-\-\fBquiet\fR]  [\-\-\fBui\fR]
.SS Flags:
.IP "\fB\-c\fR" 4m
.br
Cover values extracted from the category labels of the cover map
.IP "\fB\-r\fR" 4m
.br
Create reclass map with statistics as category labels
.IP "\fB\-\-overwrite\fR" 4m
.br
Allow output files to overwrite existing files
.IP "\fB\-\-help\fR" 4m
.br
Print usage summary
.IP "\fB\-\-verbose\fR" 4m
.br
Verbose module output
.IP "\fB\-\-quiet\fR" 4m
.br
Quiet module output
.IP "\fB\-\-ui\fR" 4m
.br
Force launching GUI dialog
.SS Parameters:
.IP "\fBbase\fR=\fIname\fR \fB[required]\fR" 4m
.br
Name of base raster map
.IP "\fBcover\fR=\fIname\fR \fB[required]\fR" 4m
.br
Name of cover raster map
.IP "\fBmethod\fR=\fIstring\fR \fB[required]\fR" 4m
.br
Method of object\-based statistic
.br
Options: \fIcount, sum, min, max, range, average, avedev, variance, stddev, skewness, kurtosis, variance2, stddev2, skewness2, kurtosis2\fR
.br
\fBcount\fR: Count of values in specified objects
.br
\fBsum\fR: Sum of values in specified objects
.br
\fBmin\fR: Minimum of values in specified objects
.br
\fBmax\fR: Maximum of values in specified objects
.br
\fBrange\fR: Range of values (max \- min) in specified objects
.br
\fBaverage\fR: Average of values in specified objects
.br
\fBavedev\fR: Average deviation of values in specified objects
.br
\fBvariance\fR: Variance of values in specified objects
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\fBstddev\fR: Standard deviation of values in specified objects
.br
\fBskewness\fR: Skewness of values in specified objects
.br
\fBkurtosis\fR: Kurtosis of values in specified objects
.br
\fBvariance2\fR: (2\-pass) Variance of values in specified objects
.br
\fBstddev2\fR: (2\-pass) Standard deviation of values in specified objects
.br
\fBskewness2\fR: (2\-pass) Skewness of values in specified objects
.br
\fBkurtosis2\fR: (2\-pass) Kurtosis of values in specified objects
.IP "\fBoutput\fR=\fIname\fR \fB[required]\fR" 4m
.br
Resultant raster map
.SH DESCRIPTION
\fIr.stats.zonal\fR is a tool to analyse exploratory statistics of a
floating\-point \(dqcover layer\(dq according to how it intersects with objects
in a \(dqbase layer\(dq. A variety of standard statistical measures are possible
(called \(dqzonal statistics\(dq in some GIS).
.SH NOTES
\fIr.stats.zonal\fR is intended to be a partial replacement for
\fIr.statistics\fR, with support
for floating\-point cover maps at the expense of not supporting
quantiles. For this, see \fIr.stats.quantile\fR.
.SH SEE ALSO
\fI
r.quantile,
r.stats.quantile,
r.statistics
\fR
.SH AUTHOR
Glynn Clements
.PP
\fILast changed: $Date: 2016\-08\-07 23:28:59 +0200 (Sun, 07 Aug 2016) $\fR
.SH SOURCE CODE
.PP
Available at: r.stats.zonal source code (history)
.PP
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.PP
© 2003\-2016
GRASS Development Team,
GRASS GIS 7.2.0 Reference Manual