[GRASS-user] r.sun DTM resolution

[Salvatore Mellino]

Hi,

if I use a DTM with a resolution 40x40 in r.sun the output (global radiation) will be expressed in Wh/(40*40)m2/day, is it true?
If I want values expressed in Wh/m2/day I have to use a DTM with a resolution 1x1 m, or is it different? How can I change a raster resolution?

Thanks

Salvatore