[GRASS-dev] question about any July changes in hydrology functions

Glynn Clements glynn at gclements.plus.com
Thu Aug 2 20:31:29 EDT 2007


Michael Barton wrote:

> 1. Is there any speed advantage/disadvantage to using r.mfilter over
> r.neighbors? At the moment, because we are trying to get rid of occasional
> spikes, I don't think that a weighted mean will give better results than an
> unweighted mean. But the only way to get functions like a weighted mean is
> to use r.mfilter, so it would be good to know if there are any known
> performance hits or if it is faster.

r.mfilter currently works with integers. AFAICT, there's no
fundamental reason why it can't be upgraded to FP.

-- 
Glynn Clements <glynn at gclements.plus.com>




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