> I'm trying to determine if a pixel is a road or not on a constantly > scrolling map. I'm using the javascript api to load and move the map.
The technique snap-to-street shown here http://econym.org.uk/gmap/snap.htm would allow you to determine if a point is witin distance 'x' of a street ; in some parts of the world. However trying to do that continuously, you would quickly break the speed or volume limits on the service, like you did with Static maps. Analyzing an image won't be very reliable, what happens if the pixel is part of the street name written on the map? are roads the same colour all over the world? etc. You might find you are able to get routing data from OpenStreetmap for a given area and perform your own local analysis. -- 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.
