[GRASSLIST:2564] NODATA in sites

[Daniel Victoria]

Hi list,

Is there such a thing as nodata or null for sites
value?
I'm doing a postgree/grass interface to interpolate
daily data and some stations have no precipitation
observation, but I can't ignore the station because
there are other data (temperature for instance).

Or could I treat the nodata when I interpolate the
sites using s.surf.idw? Or convert the sites to
rasters, define the null value and interpolate?

Thanks
Daniel

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