[GRASSLIST:3373] PNG driver 24 bit

Ulrich Leopold uleopold at science.uva.nl
Fri May 7 13:38:17 EDT 2004


I do not manage to get true color support. I installed the png driver
with 24 bit.

But when I 'export GRASS_TRUECOLOR=TRUE' for the PNG monitor the map
legend appears with steps in the color change. In the X-monitors it is
shown correctly with a smooth change in colours.
I guess this is because of non-true colours?

gd-2 and libpng-1.2.5 are installed.

Any ideas how I can achieve the true color support and a smooth gradient
in the legend for the PNG monitor?



Ulrich Leopold MSc.

Computational Bio- and Physical Geography (CBPG)
Institute for Biodiversity and Ecosystem Dynamics (IBED)
Faculty of Science
University of Amsterdam
Nieuwe Achtergracht 166
NL-1018WV Amsterdam

Room:   B2.52
Phone:	+31 20 525 7456 (7451 Secretary)
Fax:	+31 20 525 7431
Mobile:	+31 64 220 3028
Email:	uleopold at science.uva.nl
URL:    www.science.uva.nl/ibed/cbpg

More information about the grass-user mailing list