[GRASS-user] legend with logaritmic scale

Hamish hamish_b at yahoo.com
Sun Mar 16 16:17:55 EDT 2008


Jarek Jasiewicz wrote:

> I add to raster following color table:
> 
> 0,001 0 0 56
> 0,01 0 0 128
> 0,1 0 0 255
> 1 white
> 10 255 0 0
> 100 128 0 0
> 1000 56 0 0

I am not sure, but I think you have to use "." as the decimal point, not
",". Also if you like the RGB values can be separated by a ":" like
"R:G:B" instead of "R G B". That doesn't really matter, it just makes it
easier to read.


> the range of value is about 0.003-120, but most data are between 0.1
> and 10, so logaritmic transformation wuld be good idea (unfortunately,
> for some reason, I cannot logtransoform entire raster)
> 
> Is posible to transform legend to display it in logaritmic scale??

New for GRASS 6.3 is "r.colors -g" to use logarithmic scaling.


Hamish



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