#967: r.out.png: respect TRANSPARENT and COMPRESSION enviro vars --------------------------+------------------------------------------------- Reporter: hamish | Owner: [email protected] Type: enhancement | Status: new Priority: normal | Milestone: 7.0.0 Component: Raster | Version: svn-trunk Resolution: | Keywords: r.out.png Platform: All | Cpu: All --------------------------+------------------------------------------------- Comment (by glynn):
Replying to [ticket:967 hamish]: > Peter Löwe discovered that r.out.png does not respect GRASS_TRANSPARENT or GRASS_PNG_COMPRESSION, which limits the module's usefulness. (especially the lack of NULL->alpha) > I'm guessing we should have it respect both GRASS_TRANSPARENT and a module flag, if they conflict I guess go with the enviro variable. > Same for compression with a module option=1-9. You guessed wrong ;) GRASS_TRANSPARENT and GRASS_PNG_COMPRESSION are for the display drivers, which don't have the option of reading parameters from the command-line, so they have to use environment variables instead. r.out.png should use command-line options; it shouldn't be looking at environment variables. While you're at it, there are a dozen or so other parameters which could reasonably be set by command-line options. -- Ticket URL: <https://trac.osgeo.org/grass/ticket/967#comment:1> GRASS GIS <http://grass.osgeo.org>
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