Wasn't it tim who wrote: >a caveat...I'm an ecologist, not a programmer, so i'm totally out of >my element here....but, we're viewing this more as a tree, not as a >water modeling question which, Marcelo, would be more accurate as you >say, but beyond the scope of what we want to accomplish. > > I'm really just interested to see if it's possible to substitute the >storm sewer layer for the roads layer in GM and maybe some general >thoughts on how it could be done.
There's nothing in Google Maps that will help you find routes. However, since your network is a tree, it should be fairly simple to write your own route finder. One way to find routes is to label each node with a code that describes how to get there from the root. If the tree were a binary tree you could label nodes like LLRLRR, indicating whether to take the left or right branch. Then the route from LLRLRR to LLRRL is LLRLL LLRL LLR LLRR LLRRL You just discard characters from the end of the start label until you reach a substring that matches the front of the destination label, then append characters until you arrive at the destination label. (If there's no common substring, then you go all the way down to the root and back up the other side. If your tree isn't binary, then use more letters to describe the branches at each node. -- Mike Williams http://econym.org.uk/gmap -- 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=.
