[GRASS-user]Re: Problem with v.vol.rst and 3d-interpolation

GRASS GRASS user
1

Hello,

I ask Helena and she gave me the anwser. You have to use a parameter "zmult" with v.vol.rst (I try some values between 180 and 10 and choose zmult=50 for my question) . How to use "zmult" is not described in the help until now.

Regards.

-----Ursprüngliche Nachricht-----
Von: Stuart Edwards <sedwards2@cinci.rr.com>
Gesendet: 16.06.07 18:33:03
An: Christian Butzeck <butzeck@web.de>
CC: grassuser@grass.itc.it
Betreff: Re: [GRASS-user] Problem with v.vol.rst and 3d-interpolation

Maybe try adding some 'dummy' data points at the top of the clay
layer and the water table to force the analysis. Try adding a series
of points in the top 1m of the clay (say every 0.1m) with a value of
0.000001 mg/L) and the same in the 1m interval above the water
table. Not very elegant, but it will probably pull the interpolated
values back into the aquifer. Let me know if it works --

Stu

_________________________________________________________________________
In 5 Schritten zur eigenen Homepage. Jetzt Domain sichern und gestalten!
Nur 3,99 EUR/Monat! http://www.maildomain.web.de/?mc=021114

2

Christian Butzeck wrote:

Hello,

I ask Helena and she gave me the anwser. You have to use a parameter
"zmult" with v.vol.rst (I try some values between 180 and 10 and choose
zmult=50 for my question) . How to use "zmult" is not described in the
help until now.

Regards.

Hi,
it *is* explained:

g.manual v.vol.rst
"Parameters wmult and zmult allow user to re-scale the w-values and
z-coordinates of the point data (useful e.g. for transformation of
elevations given in feet to meters, so that the proper values of gradient
and curvatures can be computed)."

Cheers
Markus
--
View this message in context: http://www.nabble.com/Problem-with-v.vol.rst-and-3d-interpolation-tf3782585.html#a11270367
Sent from the Grass - Users mailing list archive at Nabble.com.