Is there a way to combine two 2D maps in order to display the elevation difference between them? I want to measure the growth of trees over time. Looking at the differential seems like a nice way to do this.
Currently I can tweak the elevation limits that control coloring of the 2D Elevation Map but this just allows me to highlight one range of elevations at a time. I could, say, look at the tops of the taller evergreen trees to try and pick out differences between the maps. But then the shorter deciduous trees become obscured. The differential would show the differences in all trees simultaneously while also eliminating changes due to the geological topology.
It would be like taking two big X-Y spreadsheets holding the value for the elevation in each cell, subtracting them cell-by-cell and then color plotting the result using continuous colors (NOT like the colors convolved with contours in the existing Elevation Map).
Very nice for monitoring the growth of crops too. Maybe there is a App for this already? Please let me know.