NAME¶
r.quantile - Compute quantiles using two passes.
KEYWORDS¶
raster, statistics
SYNOPSIS¶
r.quantile
r.quantile help
r.quantile [-
r]
input=
name
[
quantiles=
integer] [
percentiles=
float[,
float,...]] [
bins=
integer] [--
verbose] [--
quiet]
Flags:¶
- -r
-
Generate recode rules based on quantile-defined intervals.
- --verbose
-
Verbose module output
- --quiet
-
Quiet module output
Parameters:¶
- input=name
-
Name of input raster map
- quantiles=integer
-
Number of quantiles
Default: 4
- percentiles=float[,float,...]
-
List of percentiles
- bins=integer
-
Number of bins to use
Default: 1000000
DESCRIPTION¶
r.quantile computes quantiles in a manner suitable for use with large
amounts of data. It is using two passes.
EXAMPLE¶
Calculation of elevation quantiles:
g.region rast=elevation.dem -p
r.quantile input=elevation.dem percentiles=0.1,1,10,25,50,75,90,99,99.9
SEE ALSO¶
r.quant
AUTHOR¶
Glynn Clements
Last changed: $Date: 2011-06-03 18:42:11 +0200 (Fri, 03 Jun 2011) $
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