OK, thanks for clarification. Probalby I should clarify my use case too. In contrary to your application I'm sitting at the consumer side. I don't want to produce an encoded line string, I just want to draw the polyline resulting from a direction query. This works fine, if I ignore the endoded levels. To not miss something, I wanted to acknowledge the encoded level now. So this is the state:
a) Querying for routes - OK b) Decoding returned polyline and levels - OK c) Transform polyline geocodes to picture coordinates and drawing the line - OK d) Question: How to interpret the level for each point? For this I had a look onto the reference, but I didn't get the answer for "What to do with the point _and_ the level?" for a given zoom. Thanks in advance. Maps.Huge.Info (Google Maps API Guru) schrieb: > You'll have to ignore what the official reference does with the > encoded levels. In order to use the encoded levels part of encoded > polylines, you need to use a line simplification algorithm that takes > into account the ever decreasing size of the line as the zoom moves > out. Marcelo Montagna and myself wrote this one: > > http://www.usnaviguide.com/google-encode.htm > > It uses a Douglas-Peucker algorithm to determine the encoded levels > string and also double escapes all the backslashes, something you'll > need to do if you plan on using the results. > > -John Coryat > > http://maps.huge.info > > http://www.usnaviguide.com > > > > --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
