[GRASS-dev] Re: [bug #3112] r.watershed hangs

[Hamish]

> Charles Ehlschlaeger wrote:
> > The best fix would be to write an algorithm that chooses category
> > color based on adjacent cell values. Here is a psuedo code solution:

Hamish wrote:
> The random case doesn't do too poorly. (256^3 color possibilities vs.
> the four-color theorem)

minor correction:

lib/gis/color_rand.c defines:
MAX_COLORS 1024

(the code makes that 960 +- 64 in practice)

but that 1024 color palette is made up of RGB triplets from 256^3 space.


Hamish