[GRASS-user] error in r.sun with latin and longin maps

Hamish hamish_b at yahoo.com
Wed Jun 27 14:13:35 PDT 2012


tigrida wrote: 
> I want to create a map  with r.sun  but I get the
> following error:
...
> my  instruction is:
>  
> r.sun -s elevin=dem aspin=aspecto.allen slopein=pendiente
> lin=3.0
> albedo=albedo_178  latin=latitud longin=longitud
> beam_rad=beam_inst_pixel_178
> diff_rad=diffuse_inst_pixel_178
> refl_rad=reflected_inst_pixel_178 day=178 step=0.5
> declin=0.406818033
> time=11.11667 dist=1.0 numpartitions=1 
...
> Any idea how I can solve this problem?


don't use the latin= and lonin= options. You don't need them
from a UTM source location, the values will be calculated
automatically. (which turns out to be no slower than reading
them off the disk)


Hamish


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