I have a shapefile with a field containing floating point numbers ranging from about -200 to 20. Many records have a value of exactly 0. I would like to symbolize the layer as follows:
- < 0 (green)
- = 0 (yellow)
- `> 0 (red)
It looks as though in Symbology > Quantities > Graduated colors only ranges are possible. I first selected three classes and defined the bottom 2 cuttoffs as zero:
However when I try to set the color ramp in the symbology I see that an exact value of 0 is not possible:
Also checking the layer I see that all of my zero values have a red color, which isn't what I want.
How do I force the middle category to be exactly 0, and the top and bottom categories to exclude zero?