<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Sep 6, 2015 at 3:26 PM, Markus Neteler <span dir="ltr"><<a href="mailto:neteler@osgeo.org" target="_blank">neteler@osgeo.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Mon, Aug 31, 2015 at 1:55 AM, Michael Barton <<a href="mailto:Michael.Barton@asu.edu">Michael.Barton@asu.edu</a>> wrote:<br>
> Thanks for the clarification Stefan.<br>
><br>
> It sounds like, unlike other resampling commands (unless they, too, are in<br>
> error), r.resample.rst needs to be run at the resolution of the original<br>
> map, not the output map.<br>
<br>
Yes. It has been implemented like that (not sure if there is any<br>
technical reason), yet going a bit against the "normal" workflow.<br></blockquote><div><br></div><div>This seems indeed to go totally against the normal work flow. If not for a technical reason, would it be possible / desirable changing this?<br> <br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
> The output resolution will be determined by the<br>
> command, not by the region settings. This should go into the manual too,<br>
> along with the revised text you suggested.<br>
<br>
Stefan, Michael, please send a text snipped to me for the manual.<br>
<br>
> In a somewhat related question, do you have any idea how r.resample.filter<br>
> works? The manual is not very informative<br>
<br>
True - thanks to my long term inbox I found material here<br>
<a href="https://trac.osgeo.org/grass/ticket/1401#comment:8" rel="noreferrer" target="_blank">https://trac.osgeo.org/grass/ticket/1401#comment:8</a><br>
<br>
and merged it into the manual page:<br>
<a href="https://grass.osgeo.org/grass70/manuals/r.resamp.filter.html" rel="noreferrer" target="_blank">https://grass.osgeo.org/grass70/manuals/r.resamp.filter.html</a><br>
<a href="https://grass.osgeo.org/grass71/manuals/r.resamp.filter.html" rel="noreferrer" target="_blank">https://grass.osgeo.org/grass71/manuals/r.resamp.filter.html</a><br>
<br>
(please revise as needed).<br>
<br>
> and I couldn’t get any useful<br>
> downscaling results (lower to higher resolution) with my spot tests.<br>
<br>
Adding some examples there would be important.<br>
<br>
> r.resample.interp doesn’t seem to give expected results either. I’ll do a<br>
> test with demo data when I have a few minutes this week. I did get very good<br>
> downscaling results with r.resample.bspline, but it took a very long time.<br>
<br>
Perhaps time to expand<br>
<a href="https://grasswiki.osgeo.org/wiki/Interpolation#Resampling_of_raster_maps_to_finer_resolution" rel="noreferrer" target="_blank">https://grasswiki.osgeo.org/wiki/Interpolation#Resampling_of_raster_maps_to_finer_resolution</a><br>
?<br>
<br>
Markus<br>
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