Alternative to r.median for GRASS 7.x?

Nikos Alexandris <[email protected]>
Newsgroups gmane.comp.gis.grass.user
Message-ID <[email protected]>
Dear statistics experts,

how can we compute the median of a floating point cover raster map, over
a base map (using the conventional terminology as in r.stats.zonal)?

It appears that there is no module to get the median out of floating
point raster maps, using a base map as in r.stats.zonal or r.statistics
(which does not support floating point figures).

Is there an alternative to r.median for GRASS 7.x?


A work around with r.statistics, is to use r.reclass and get the
floating point numbers (reported via r.stats -n1) as category labels of the
cover map. Yet, r.reclass rounds up floats before assigning a category.

At the moment the shortest path seems to be v.rast.stats. This would
require some conversions back and forth from raster to vector for the
base map though.

Thank you for any hints, Nikos

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