Interesting, we always used 9 so that the entire map isn't re-rendered each time someone zooms in/out - We actually match the zoom levels that Apple Maps or Google Maps have (as these are overlays we just assume that zoom levels had to be equal to the underlying maps it's why we use .SVG's for lossless compression). Thanks for the EPSG:3857 standard 1 last Q: What special experience should I look for in an iOS dev for this, Nav. & A* Algorithm - need to hire a good dev for this. Thank you!

Hello Ed Ford, In our case we create the overlay by tracing pathways, roads and POIs (her design over a map) then she provides the final map overlay in 9 pieces, but she doesn't know the coordinates because she puts the overlay in a square (so she can chop into 9 equal pieces). It's almost like having to put her design back on top of a map, lining up the pathways, then looking at the corners for the coordinates. Is that possible to do in Mapkit after the design is created?