[GRASS-user] integration of sample.c algorithms into r.resample

Glynn Clements glynn at gclements.plus.com
Wed Aug 16 20:28:26 EDT 2006


Dylan Beaudette wrote:

> I have summarized three test cases here:
> http://169.237.35.250/~dylan/temp/raster_sampling/
> 
> 1. input raster extent > current region, resampling from 30m to 10m [ok]
> 2. input raster extent < current region, resampling from 30m to 10m [not ok]
> 3. input raster extent == current region, resampling from 30m to 10m [ok]
> 
> Note that for example 2, the summary from r.info suggests that there is 
> something wrong with indexing / overflowing :
> !!!
> min = -0.000000  max = 1356171748364289065433195553253
> 
> 
> possibly something to do with dealing with NULL values, and extending the 
> region???

Yes. I was only considering the bounds of the source map. I've updated
it to set the source region to cover the destination region, plus
neighbours.

I've attached an updated version.

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

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