You are correct. Then I have no idea how to do this...
On Tue, Jun 10, 2014 at 9:32 AM, Veronica Andreo <[email protected]> wrote: > Yeah, I also tried that, and of course, I get a nice gradient in the > legend, but then I need to somehow edit tick-marks. > Logarithm of chlorophyll concentration is, from my point of view, > uninformative. I need the actual values. > I just want to change the display of the legend, like making log of x or y > axis in a plot, that you do not change the > values themselves, just rescale the axis for better visualization... but > maybe not (yet) possible in GRASS ;) > > Thanks much! > Vero > > > 2014-06-10 7:40 GMT-03:00 Daniel Victoria <[email protected]>: > >> What if you use r.mapcalc and apply log to your map to make a new one >> with rescaled values? >> On Jun 9, 2014 12:36 PM, "Veronica Andreo" <[email protected]> wrote: >> >>> 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 >>> >>> _______________________________________________ >>> grass-user mailing list >>> [email protected] >>> http://lists.osgeo.org/mailman/listinfo/grass-user >>> >> >
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