[GRASS-user] quantile/percentile
Laura Poggio
laura.poggio at gmail.com
Wed Sep 16 07:37:07 EDT 2009
Dear all,
I would need to calculate the resulting percentile map from a large number
of maps (>10000), obtaining the values for 5 and 95 percentile for each
pixel. Is there any function in GRASS?
I did not find anything in mapcalc. Other functions such r.quantile or
r.univar provide a summarising quantile value for every map, but this is not
very helpful in my case.
I could use R but before I would like to try with GRASS, also because I am
afraid that R would require a huge amount of memory as the raster have about
150000 pixels.
Thank you in advance
Laura
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