[GRASS-user] Grass 7 and 7.1 r.surf.idw problem

[Robert Kuszinger]

Dear Markus,

thanks for the comments, I'm already taking part in the ticket handling
mentioned above with testcase creation and testing. It seems that 7.0
problems solved at r65214 <https://trac.osgeo.org/grass/changeset/65214>,
I'll test it further.

Very good community, anyway :)

Robert



2015-05-17 19:28 GMT+02:00 Markus Neteler <neteler at osgeo.org>:

> On Thu, May 7, 2015 at 12:28 PM, Robert Kuszinger <kuszinger at giscom.hu>
> wrote:
> > (I'm sorry for the previous one going out without subject)
> >
> > Hello,
> >
> > I've tried to use r.surf.idw on a large raster. It works well in 6.4.4.
> >
> > I've moved to 7.1 SVN, where everything is marvellous, at least what I
> use,
> > except r.surf.idw which creates the same output as the impot was.
> > I've also svn-ed and compiled 7.0.1, where r.surf.idw did the same.
>
> There are two issues open:
> https://trac.osgeo.org/grass/query?status=!closed&keywords=~r.surf.idw
>
> > Namely:
> >
> > r.surf.idw --overwrite --verbose input=output_temp1 output=output_temp2
> > npoints=7
> >
> > when finished, output_temp2 is the same as output_temp1 and no
> interpolation
> > seems to be done.
> >
> > One more big difference:
> > 6.4.4 uses less than 2G ram and finishes in a few minutes. In 7.0 and
> 7.1 it
> > eats all 6GB RAM, 4 GB SWAP and runs much-much longer, understandably...
>
> This is kind of surprising. Are you sure that the computation region
> was really the same (extent + resolution)?
> Could you provide us with a reproducible example?
>
> > Should I stay with 6.4.4?
>
> Likely not :-)
>
> Markus
>
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