[GRASS-user] v vol rst super slow

[Markus Metz]

On Wed, May 23, 2018 at 1:40 PM, Markus Neteler <neteler at osgeo.org> wrote:
>
> On Wed, May 23, 2018 at 1:18 PM, Sören Gebbert
> <soerengebbert at googlemail.com> wrote:
> > Hi,
> > your region settings are interesting.
> > Do you really need a resolution of 5m in x,y plane and 1m in z
direction?
> > As a result you have 23,507,876,616 voxel to compute, but only 76887
> > points for interpolation.
> >
> > I would suggest you reduce the resolution of your region
> > significantly, at least to test the interpolation settings.
>
> Indeed, at least to get a complete run.
>
> > Best regards
> > Soeren
> >
> > 2018-05-23 13:09 GMT+02:00 Francois Chartier <fra.chartier at gmail.com>:
> >> see below
> >> g.region -3p
> >>
> >> projection: 1 (UTM)
> [...]
> >> cells:      76572888
> >> cells3:     23507876616
> [...]
> >> v.vol.rst input=BHMat1All_May12 at Toronto wcolumn=cat dmin=0.1
> >> 25 records selected from table
> >> Processing all selected output files will require 0 bytes of disk
space for
> >> temp files

These 0 bytes are caused by integer overflow, easy to fix.

> >> WARNING: Unable to create <(null)> raster map without cross_input
raster map
> >> being specified
>
> that comes from
> vector/v.vol.rst/main.c" line 640
>
> To be studied...

The reason is that no output has been specified.

Markus M
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