[GRASS-user] problem on vectorizing a float point raster

Nikos Alexandris nikos.alexandris at felis.uni-freiburg.de
Thu Jun 11 08:46:06 EDT 2009

(Kind of Off-Topic)

Micha Silver:
> As a further exercise, I took a small region of 540000 cells with 
> floating point values, and using the "feature=area" option to r.to.vect 
> I created a vector map of polygons.

Hi Micha! I am curious about the 540.000 cells. This is _not_ really
small, is it?

> It produced over 360000 polygons.

I wonder how long it took? For me a r.to.vect feature=point process with
~350.000 cells took more than 24 hours!


More information about the grass-user mailing list