[GRASS-dev] bug in v.surf.bspline?

Hamish hamish_nospam at yahoo.com
Sun Oct 21 19:31:43 EDT 2007

Michael Barton wrote:

> Also, in both cases the interpolation does not respect a MASK.

It is not expected to. The MASK is put into action only when *reading* a raster
map, not when creating/writing one.

r.mapcalc MASK=fields
r.mapcalc one=1
g.remove MASK
r.univar one
# look, no NULL cells

r.mapcalc MASK=fields
r.mapcalc one_masked=one
g.remove MASK
r.univar one_masked
# lots of null cells, as the "one" map was masked while being read

If you don't remove MASK, r.univar (libgis) adds in nulls when it reads the


Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 

More information about the grass-dev mailing list