[GRASS-dev] r.resample.rst behavior does not match manual

[Paulo van Breugel]

On Sun, Sep 6, 2015 at 3:26 PM, Markus Neteler <neteler at osgeo.org> wrote:

> On Mon, Aug 31, 2015 at 1:55 AM, Michael Barton <Michael.Barton at asu.edu>
> wrote:
> > Thanks for the clarification Stefan.
> >
> > It sounds like, unlike other resampling commands (unless they, too, are
> in
> > error), r.resample.rst needs to be run at the resolution of the original
> > map, not the output map.
>
> Yes. It has been implemented like that (not sure if there is any
> technical reason), yet going a bit against the "normal" workflow.
>

This seems indeed to go totally against the normal work flow. If not for a
technical reason, would it be possible / desirable changing this?


>
> > The output resolution will be determined by the
> > command, not by the region settings. This should go into the manual too,
> > along with the revised text you suggested.
>
> Stefan, Michael, please send a text snipped to me for the manual.
>
> > In a somewhat related question, do you have any idea how
> r.resample.filter
> > works? The manual is not very informative
>
> True - thanks to my long term inbox I found material here
> https://trac.osgeo.org/grass/ticket/1401#comment:8
>
> and merged it into the manual page:
> https://grass.osgeo.org/grass70/manuals/r.resamp.filter.html
> https://grass.osgeo.org/grass71/manuals/r.resamp.filter.html
>
> (please revise as needed).
>
> > and I couldn’t get any useful
> > downscaling results (lower to higher resolution) with my spot tests.
>
> Adding some examples there would be important.
>
> > r.resample.interp doesn’t seem to give expected results either. I’ll do a
> > test with demo data when I have a few minutes this week. I did get very
> good
> > downscaling results with r.resample.bspline, but it took a very long
> time.
>
> Perhaps time to expand
>
> https://grasswiki.osgeo.org/wiki/Interpolation#Resampling_of_raster_maps_to_finer_resolution
> ?
>
> Markus
> _______________________________________________
> grass-dev mailing list
> grass-dev at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/grass-dev
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/grass-dev/attachments/20150906/2d05b4bd/attachment.html>