[Gvsig_english] [Gvsig-english] Zonal Stats

[Nicolas DEVAUX]

GvSIG 1.9
Sextante
Ubuntu 9.10

Hello list,
I tried to make a zonal stats (zones defined by vector polygons and 
value extract from a grid). For that I'm using Sextant tool :  *Tools 
for polygon layer/Grid statistics in polygons
*I have each time an error message : java.lang.NullPoinerException

I used an Integer Raster in Tif format, but I'm surprise that this 
algorithm doesn't ask anything about vector attribute field to use in 
order to identity individual polygon for zonal stats...

Does any body have an idea on this problem or an alternative tool to 
make traditional zonal stats ???

Thanks

Nicolas

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    devaux at supagro.inra.fr

Nicolas DEVAUX
Laboratoire d'étude des Interactions entre Sol, Agrosystème et Hydrosystème
UMR LISAH AgroM-INRA-IRD
Bat. 24
place Viala
34060 Montpellier cedex 1
tél : +33 0(4) 99 61 25 45
fax: +33 0(4) 67 63 26 14
email: devaux at supagro.inra.fr
http://sol.ensam.inra.fr/lisah/
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