[GRASS-user] Setting layer transparency from a script

GRASS GRASS user
1

Hello,

I'm using a Python script to generate maps for publication by setting
GRASS_RENDER_FILE and running the different d.* commands. Is it
possible to add opacity to some of the layers?

Regards,
Laurent

2

Laurent C.:

Hello,

I'm using a Python script to generate maps for publication by setting
GRASS_RENDER_FILE and running the different d.* commands. Is it
possible to add opacity to some of the layers?

Dear Laurent,

not a direct answer, but you might want to read
<https://lists.osgeo.org/pipermail/grass-user/2016-March/073831.html&gt;

Also, the r.out.png tool has a "-t Make NULL cells transparent" flag.

Kind regards and thank you for your excellent work I've seen elsewhere.

Nikos

3

Hi Nikos,

What I would like is the possibility to set a percentage of opacity. But if I understand well, it is what is doing pnmcomp.

Thanks for your appreciation.

Regards,
Laurent

···

On 11 Mar 2017 03:35, “Nikos Alexandris” <nik@nikosalexandris.net> wrote:

Laurent C.:

Hello,

I’m using a Python script to generate maps for publication by setting
GRASS_RENDER_FILE and running the different d.* commands. Is it
possible to add opacity to some of the layers?

Dear Laurent,

not a direct answer, but you might want to read
<https://lists.osgeo.org/pipermail/grass-user/2016-March/073831.html>

Also, the r.out.png tool has a “-t Make NULL cells transparent” flag.

Kind regards and thank you for your excellent work I’ve seen elsewhere.

Nikos