Hi Kevin, Apple's MapKit framework can display tiles over the Google tiles in an MKOverlayView in iOS4.
If you have a paid iPhone Developer account, take a look at the Mapping/Location talk from the last WWDC [1]. They show a demo app that consumes a gdal-generated tile-cache (stored on the device) and shows it on top of Google's tiles in a standard MKMapView, so the MapKit Framework can be used to control overlaying vector data on top it it, just like Google Maps. The complete code for the app is in the WWDC demo code package that is unfortunately only available to registered iPhone developers. It does not look like it made it into the non NDA'd MapKit samples like the other demos from the talk. Also, I'm assuming you want to do this to have your maps available off-line? The tile caches can get very large very fast, so if at all possibly, I would recommend loading them from a tile server rather than from the device. [1] https://developer.apple.com/videos/wwdc/2010/ Cheers. Michael -- Michael Weisman [email protected] @mweisman On 2010-08-27, at 1:35 PM, Kevin Elliott wrote: > Hey geo-friends, > > Is anyone aware of a very simple GIS API for iPhone? I'd like to create a > very simple polygonal map of the world, and some layers of the countries, > states/subregions, and cities. I do not want a Google Map or OSM, I want > custom drawn maps. Doing this on the web has been really easy, especially > for making quick mashups to fill in regional boundaries with different > shades of color to represent meaningful data. I am making an app that could > benefit from being able to display some data in real time on this custom map > by filling in polygons. > > I know that route-me can handle custom map tiles, but I do not want to run a > tile server for this effort, as it should all be on device if at all > possible. > > Any suggestions? > > Kevin Elliott > [email protected] | http://kevinelliott.net | http://twitter.com/kevinelliott > _______________________________________________ > Geowanking mailing list > [email protected] > http://geowanking.org/mailman/listinfo/geowanking_geowanking.org _______________________________________________ Geowanking mailing list [email protected] http://geowanking.org/mailman/listinfo/geowanking_geowanking.org
