[GRASS-user] î.evapo.potrad negative ETpot values

[Niels Thevs]

Over the past few months I used i.evapo.potrad, in order to calculate 
ETpot. Now, this module yields erratic negative values. Is it possible 
for me as a ordinary user to extract the mathematics behind 
i.evapo.potrad somewhere so that I could calculate ETpot with a script, 
which I write by myself ?

thanks for help

Niels

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Dr. Niels Thevs
Institute of Botany and Landscape Ecology
Greifswald University
Grimmer Strasse 88
17487 Greifswald
Germany

Tel.: +49-3834-86-4131
Fax:  +49-3834-86-4114

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