[GRASS-user] Interpolating rainfall data across area from points

[Francois Chartier]

Can grass R interpolate a 3d raster?

On Fri, Oct 12, 2018, 16:17 Rich Shepard, <rshepard at appl-ecosys.com> wrote:

> On Fri, 12 Oct 2018, Markus Metz wrote:
>
> > With only 58 points, you will not get a lot of spatial detail, no matter
> > what interpolation method you use. For example, using 58 points to create
> > a surface with e.g. 1 million points is a waste of time: there is simply
> > not enough spatial detail in the input. You can check, as you have done,
> > by changing the resolution of the current region for the output and
> > comparing the results. The only solution for more spatial detail is to
> get
> > more input points.
>
> Markus,
>
>    Thanks for the insight. Yes, there are too few data points for the size
> of
> the area. So, I'll not use this map, but present a table of annual mean
> values instead.
>
> Thanks,
>
> Rich
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