[GRASS-user] v.rast.stats

[Micha Silver]

On 06/08/2010 05:24 PM, Sandile Gumede wrote:
> Hi,
>
> After running *v.rast.stats vect=catchments rast=rainfall 
> colprefix=precip*, I ran *v.info <http://v.info> -c catchments* and I 
> got 9 new columns:
> precip_min, precip_max, precip_ran, precip_mean, precip_std, 
> precip_var, precip_cf_, precip_sum,.....,precip_per.

>
> How do I then be able to see how much rain has fallen in each 
> catchment(polygon), and which direction is the water flowing?
v.db.select catchments column=precip_sum

If you display the stream network over the catchments, and use the 
"display=shape,dir" option to  d.vect then you'll see small arrows along 
the streams indicating direction of flow.


>
> -- 
> Kind Regards
> TS Gumede
> CSIR, Meraka Institute
> 072 258 1650
>
>
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-- 
Micha Silver
Arava Development Co. +972-52-3665918
http://surfaces.co.il


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