If you are looking for US data, you can download them from US Census in ESRI shape format. Then you need to extract the coordinates from it, construct the Polygon and overlay it on Google map.
Or you can use the easy way get the coordinates from the web service.: http://www.dyngeometry.com/web/XYQuery.aspx Hope it is helpful. On Aug 21, 2:30 pm, Stedwick <[email protected]> wrote: > I'm trying to draw boundaries for things like states, counties, and > cities on a Google map, but where do I get the coordinates for the > polygons representing these objects? I haven't been able to find this > information in any remotely usable format anywhere on the Internet. > Sometimes I find a file that has coordinates in it, but when I put the > coordinates into Google maps the point that shows up is completely in > the wrong place. > > I've been doing a little bit of research, and apparently there are > tons of different coordinate systems which can be projected in many > different ways, and it's way too complicated to sift through. Not to > mention all the different file formats, such as shape files, KML, and > whatever. > > I know this data must exist somewhere, because I've seen other people > do similar things using Google maps. However, where do they get their > data from? > > Does anybody know any good place to get this data in a very simple > format, such as a simple CSV file with the name of the state in one > column, and a bunch of coordinates in the next columns? > > Thanks! > > Philip --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Maps API" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/Google-Maps-API?hl=en -~----------~----~----~----~------~----~------~--~---
