[GRASS-dev] questions for compatibility

[Andrea Antonello]

That is interesting, since that seems to give really an alpha for every
pixel. I was looking towards having alpha inside the rules in order to
have parts of the maps at different translucency.
However, if gdal creates another map for alpha, the path to persistence
will be long. I'll have to check what QGis does for this case.
In JGrass we would like to have alpha persistent and since we want to
keep compatibility with GRASS, I would really love to hear some opinions
from the developer team in order to follow their rules, instead of
changing afterwards to fix compatibility.
Any idea about what would be best?

Andrea

Hamish probaly wrote:
> Glynn Clements wrote:
>> Maps don't have a translucency (alpha-blending) value.
> 
> Just to note, r.in.gdal will save the .alpha channel, if present in the
> input map. But AFAIK the GIS treats it as just another map.
> 
> You can also try d.his to replicate the effect.
> 
> 
> Hamish
>