[GRASS-user] v.kernel and yellow background

Aren Cambre aren at arencambre.com
Sun Sep 11 21:29:26 EDT 2011

I applied that to the raster layer, and it had no effect. The entire
background remains yellow.

Here's the command: *r.null test_fail_heatmap null=0.0*

I also re-ran v.kernel and got no change.

Does http://trac.osgeo.org/grass/ticket/1276 have anything to do with this?


On Sun, Sep 11, 2011 at 4:27 PM, Markus Neteler <neteler at osgeo.org> wrote:

> 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
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