I'm working with ArcGis 10 and I have different polygon features in different layers with their attributes like shape_area. I would like to create a unique graphic where is possible to see the respective percentage of each one. Can I do this if I have different layers? if is not possible is there a good way to do this graph? Thank you.
Perhaps just combine them all once to get a total area to use for your calculations.
I may be wrong but it seems that you might want to sum all the areas of one layer and show that percentage as a class.