[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
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.osgeo.org/pipermail/grass-user/attachments/20090916/2719994b/attachment.html


More information about the grass-user mailing list