[GRASS-user] zone statistics ?

[Didrik Pinte]

Hi,

Is it possible to get kind of zonal statistics in Grass ? I don't know
if the term is the rigth one, but here is what I want to do.

I have two vector layers. I want to update the first layer using
information from the second layer.

Ex.
Layer_2 is a network of cells with an average pumping rate. 

If cell_1 of layer_1 overlaps cell_2 and cell_3 in layer_2, I want the
average pumping rate of cell_1 to be a spatial mean of the pumping rates
of cell_2 and cell_3 according to their surface in cell1.

Is it clear enough ?

I'm sure there is a pretty straigthforward way to do this in grass but I
haven't found it.

Thank you all in advance for the help.

Didrik

Ps : I'm running Grass 6.2.0 (Debian/Sid).
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: Ceci est une partie de message
	=?ISO-8859-1?Q?num=E9riquement?= =?ISO-8859-1?Q?_sign=E9e?=
Url : http://lists.osgeo.org/pipermail/grass-user/attachments/20070108/2deb725c/attachment.bin