[GRASS-dev] map display enhancement

Anna Petrášová kratochanna at gmail.com
Mon Jun 20 07:05:37 PDT 2016

On Mon, Jun 20, 2016 at 6:03 AM, Vincent Bain <bain at toraval.fr> wrote:
> Hi list !
> playing around with multiple layers in the map display I wonder if
> anyone ever suggested to introduce blending modes beside the already
> implemented "opacity" option. I mean it would be great to be able to

there is r.blend as you probably know.

> combine layers with various options (commonly known as Multiply, Screen,
> Addition, etc.).

could you also suggest a use case for these to better understand the
> It's probably a big task. Let me know if you think it is worth opening a
> ticket for that.

yes, sure. What I miss is semi-transparent rendering of layers with d
commands, now g.pnmcomp is used in the gui, but it's very inconvenient
for scripting.


> Yours,
> Vincent.
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