[GRASS-dev] more interesting failure for reading fp_range of a NULL map

[Hamish]

Yann:
> In the same way as there is a pixel based function to assess a
> NULL pixel value, it would be very interesting to have a
> function to test an all NULL raster map status.

see 'r.info -r' for overall map, or r.univar for within-region window.


?
Hamish