Hi folks, My apologies if this is answered elsewhere, but I've searched all over. Briefly, I'm using the mapping toolbox to color polygons based on values in a shapefile . For some datasets (e.g., coloring US states by population), the way symbolspec groups the data is fine. But for others (i.e., things that some states do and others don't - e.g., growing cotton, or producing oil, etc.), a linear scale can't show the necessary details. In these cases, there are many states down at the bottom end of the scale, and just a few at the top.
Is there a way to 'shift' the colors to account for this - so that the colorbar is not dominated by a large value?
E.g.,if
data = [1 1.5 1.8 3 4.5 8 70 100]
I'd like values < 2 to be one color, the values > 2 and < 5 to be another, the values > 5 and < 10 another, etc. With these data, as I currently use makesymbolspec, I get all the low values ( i.e., less than 10) as one color. (Manually editing the colormap is possible (though tedious), but the colorbar would then be dominated by the color that stretches from, e.g., 10 - 100.)
Here's how I code the variable densityColors, to be used in geoshow:
densityColors = makesymbolspec('Polygon', ...
{'TmpData', [0 max(data)],...
'FaceColor', myColormap});
Thanks very much in advance!
