How do I get a color ramp in ArcGIS to show from -X to 0 to X, as Red to White to Green?
Whenever I try, ArcGIS scales the colors from min to max, without regard to 0. White ends up representing a positive or negative value.
I want the full red to represent the negative of the full green even if I don't have symmetric values in my data! This is important if I do not wish to lie about the data. If I show full green for -5000 but full red for +25000 the scales are misleading and intermediate values cannot be accurately interpreted.