I have a polygon layer that is symbolized into four categories. Two of these categories are above a threshold limit and two are below. I would like to further distinguish the two categories above the threshold limit but putting "10% simple hatch" OVER the polgyon fill colour from the colour ramp. How do I combine symbol layers so that a solid background colour appears under hatching?
You can do this fairly easily using the symbol selector options, however it will need to be done for each symbol you want to change - it can't be done as part of the color ramp.