I am trying to find out what is controlling vegetation in an area of Saudi Arabia for my masters project and I am currently focusing on the aspect of slopes in the area. I have a DEM layer and I have used the aspect tool to show me which direction the slopes are facing in. I also have a shapefile feature class of points of vegetation and wish to find out the proportion/percentage or density of this vegetation in each aspect (so how much of the vegetation is only on south facing slopes etc.) but I am struggling to find a way to do this. I have tried to do it with zonal statistics but I don't know how to get it to accept the different aspects as individual zones.
Does anyone have any ideas how I might go about this?