[GRASSLIST:2379] Re: The g3.region settings ....

[Glynn Clements]

Geotronix wrote:

> I'm trying to get s.vol.rst to work for the computation of rainfall map
> using a 50m resolution cell (1000x1000 cells grid).
> Now, the site file that's input for s.vol.rst has 4 columns
> x|y|z|%rainfall(mm/year)
> 
> When I tried to launch s.vol.rst the first time it told me that I had to
> set the 3D region. SO I launched g3.createregion which reead the
> defaults from the current 2D region. I gave him the following options:
> 
> g3.createregion t=2500 b=0 dres=1
> 
> as to resemble:
> 
> t=2500 --> max altitude in meters that I have on my dem;
> b=0  --> min altitude on my dem ;
> dres=1 -->vertical resolution on 1 meter.
> 
> Now, I used the maskmap option for s.vol.rst so as to narrow the
> computation only to a subarea of the 1000x1000 cell area while all
> rainfall station (25) fall in the 1000x1000 cell area.
> 
> I launched the program and it is takeing a hell of a long time to
> compute. After 4 hours it's still at 0%.
> 
> Did I miss something in the settings of the 3D region or does it simply
> take so much time to compute? Yet, 1000x1000 cells don't seem to be much

It's a volume, not an area: 1000x1000x2500 = 2.5x10^9 cells.

-- 
Glynn Clements <glynn.clements at virgin.net>