The maximum magnitude of latitude that can be handled by World Mercator is around 86 degrees. Anything greater than that is subject to nearly infinite error due to the projection characteristics.
The problem is easy to understand if you think about what World Mercator does. The idea with this projection is that latitude and longitude lines are perpendicular to each other regardless of where they lie on the globe. In reality, longitude lines converge as the latitude increases, at the pole, you can put your foot on every longitude line, so the error in this projection goes to infinity at that point. Around 86 degrees, the error is so great that the projection becomes useless. -John Coryat http://maps.huge.info http://www.usnaviguide.com http://www.zipmaps.net --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
