[GRASS-dev] ps.map: raster always under vector map?

[Hamish]

Glynn:
> Bear in mind that the raster map is always opaque, so it will obscure
> anything which is drawn beneath it.

Markus:
> That's exactly what I need: in my case the raster map contains a few
> cells only, but I need it on top to not be covered by vector contour
> lines etc.
..
> Maybe ps.map's raster command needs an additional parameter "ontop" or
> something like this? Hacking C code as Hamish suggests might be asked
> too much for the average user.


are the null areas solid white, not transparent?

Glynn:
>  Level 3 PostScript supports masked
> images, but ps.map doesn't make use of this.

has anyone ever used the vector masking flag in ps.map?
maybe something interesting in there.



Hamish