[GRASS-user] v.kernel and yellow background

[Markus Neteler]

On Sun, Sep 11, 2011 at 10:49 PM, Aren Cambre <aren at arencambre.com> wrote:
> I am running v.kernel on a vector layer of points. The points are mostly
> bunched up in small-ish areas, but when I run v.kernel, the entire
> background is yellow.
> Is it possible to make v.kernel use a transparent (clear) background where
> it finds no activity, rather than painting everything yellow first?

I suppose that you got the value 0.000000 in those cells.
This is different from  NULL, hence it is not "transparent".

With r.null you can assign 0.0 to NULL.

Hope this helps
Markus