[GRASS-user] logarithmic scale in raster legend

[Veronica Andreo]

Hi list!

I have these raster maps of chlorophyll concentration (mg/m3) with a lot of
very small values (from 0.02 to 1.5) and few high values (between 20 and
100)... I managed to create my own color table to get a good visualization
of the variation... but when I display the legend, i loose the color
variation in smaller values...

Is it possible to create a logarithmic legend or at least determine which
tick-marks I'm interested in?? I've tried with "use" parameter in d.legend
(which seemed to meet my needs) setting it to: 0.01,0.1,1,10,100, but works
only for categories... There's no such a thing in ps.map, either... which
would be the right approach? any ideas?

Thanks much in advance!
Best,

Vero
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