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r.resamp.stats.1grass
Langue: en
Version: 250640 (debian - 07/07/09)
Section: 1 (Commandes utilisateur)
NAME
r.resamp.stats - Resamples raster map layers to a coarser grid using aggregation.KEYWORDS
raster, resampleSYNOPSIS
r.resamp.statsr.resamp.stats help
r.resamp.stats [-nw] input=name output=name [method=string] [--overwrite] [--verbose] [--quiet]
Flags:
- -n
Propagate NULLs- -w
Weight according to area (slower)- --overwrite
Allow output files to overwrite existing files- --verbose
Verbose module output- --quiet
Quiet module output
Parameters:
- input=name
Name of input raster map- output=name
Name for output raster map- method=string
Aggregation method
Options: average,median,mode,minimum,maximum,quart1,quart3,perc90,sum,variance,stddev
Default: average
DESCRIPTION
r.resamp.stats fills a grid cell (raster) matrix with aggregated values generated from a set of input layer data points.
Without the -w switch, the aggregate is computed over all of the input cells whose centers lie within the output cell.
With the -w switch, the aggregate uses the values from all input cells which intersect the output cell, weighted according to the proportion of the source cell which lies inside the output cell. This is slower, but produces a more accurate result.
NOTES
Resampling modules (r.resample, r.resamp.stats, r.resamp.interp, r.resamp.rst) resample the map to match the current region settings.
SEE ALSO
g.region, r.resample, r.resamp.rst r.resamp.interpAUTHOR
Glynn ClementsLast changed: $Date: 2008-09-26 08:08:36 +0200 (Fri, 26 Sep 2008) $
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