Be aware that displaying 150 polylines simultaneously will make the map rather sluggish, particularly in slow browsers like MSIE. How sluggish it gets depends on many factors, such as the average number of vertices in those polylines, and the hardware, O/S and Internet connection speed and browser type.
Before committing a lot of effort into your project, try doing a quick test with 100-150 polylines that are representative of the data that you're going to be using, and see how slow it goes. For the purposes of such a test, you don't need real data. 100 copies of the same polyline will suffice. In fact, let me do that for you: http://econym.org.uk/temp/test_dirns100.htm plots 100 copies of the route from Manchester to Liverpool on top of each other. Try dragging and zooming the map. Notice that the responsiveness in the Google Chrome browser is quite acceptable, but in MSIE the movements are very slow and jerky. Other browsers come in somewhere between those two extremes. -- http://econym.org.uk/gmap The Blackpool Community Church Javascript Team --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
