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@Micha & @gene your answers were helpful for me to get to my desired results. GRASS 6.4.4 (my_project) :~ sudo vim $GISBASE/etc/colors bcyr_custom.txt (enter my password). Now I slightly change the "bcyr" color palette. -0.000001 255:255:255 0.000000 255:255:255 0.060000 255:255:255 0.060001 blue 0.333333 cyan 0.666667 yellow 1.000000 red ...


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A way to do this is with a "reclass" map, set up to classify the continuous data into fixed categories. The format of the reclass file might be: GRASS 7.0.0 (WGS84):~ >cat concensus_reclass.txt 0.000000 thru 0.059999 = 1 0.060000 thru 0.333332 = 2 0.333333 thru 0.666666 = 3 0.666667 thru 1.0 = 4 Your color rules file will be changed to: 1 238:238:238 ...


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As you say, r.cpt2grass is an add-on. Simply download the script and make it executable. It should be executed in the Grass environment (GRASS shell for example) GRASS 6.4.4 (geol):~ > r.cpt2grass --help # or GRASS 7 Description: Convert or apply a GMT color table to a GRASS raster map Usage: r.cpt2grass [-s] input=string [map=string] [output=string] ...


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If you happen to work in R, you can use the vec2dtransf package (which is mine :) ). You would simply need to load your Shapefiles into R using rgdal and define your affine transformation to apply it on the data. After such process, you can export your data to a transformed Shapefile also via rgdal. In vec2dtransf, affine transformations can be defined from ...


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Using arrows is not an option defined in the current CSS of CartoDB, but bullets are defined here. You'd need to add them from the image uploader (IMG button) for legends in order to use them. Unfortunately, there are no arrows in the icon sets available, so you'll need to use your own images.



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