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

[Michael Barton]

Then, as is it won't work for us. If it can be upgraded to integers we can
try it.

Thanks for the info. Saved us some time in fruitless testing.

Now that we understand what is going on, we're getting better results. We
will still need to conduct more tests, but will report back to the list with
the results.

Michael


On 8/2/07 5:31 PM, "Glynn Clements" <glynn at gclements.plus.com> wrote:

> 
> 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.

__________________________________________
Michael Barton, Professor of Anthropology
Director of Graduate Studies
School of Human Evolution & Social Change
Center for Social Dynamics & Complexity
Arizona State University

phone: 480-965-6213
fax: 480-965-7671
www: http://www.public.asu.edu/~cmbarton