I am kind of stuck here. I have 3 or 4 different layers that demonstrate things such as population by zip code, average hospital transport time by zip code, etc...there are 4 layers with the data broken down to the zip code level for the state. How can I take all four of these layers and make a composite map showing which areas are in need for more services and which areas are not. My maps are just regular polygon maps and when i try to use the weighted overaly analysis tool it wants everything in raster not polygon. Can anyone help me with this process?