You guys obviously have much more logically minded street namers than in New Zealand, where I am. :-) For instance, if I look up George Street on my Auckland map, I have a choice of at least 6! Now I can eliminate most by combining with suburb, but there are two that are in adjoining suburbs, and I'm not entirely sure that google and whatever mapping source we would use would agree on suburb names, since those appear to be somewhat malleable too - presumably there is a real boundary, but google doesn't always agree with what I get from a street map. (they are using an unknown source for NZ street information I think - we have no way to ask for corrections to be made, unlike how I see you can in the US: there is a major motorway offramp that I can't get off with G Map directions even though its been in existence for at least 3 years!). Another good example is Queen St - 9 choices - again I can select by suburb, but then I also have Queen St West. Or Queens for that matter (Queens Rd; Dr; Ave; Pde; Arcade). And then there are the streets that have been cut in half by a motorway - some have 'east' and 'west' appended to them, but there is at least one example that doesn't! Take note if you visit Auckland! :-)
Anyway, I only add this in case anyone else is looking at this as a solution - there are a number of extra things to deal with to make it work - but at least I think you've pointed me at a solution that might do what we want. Will report back once I've messed with it some. thanks again ...stu On Mar 29, 3:37 am, Marcelo <[email protected]> wrote: > On Mar 28, 12:19 pm, stu <[email protected]> wrote: > > > I do wonder though whether its fair to expect that street names that > > we might enter will match identically with googles geocoded street > > names, and would also need to deal with identical street names. > > Think logically! :) > Suppose you're looking for "Walton street" in Chicago. > Go to maps.google.com and enter "Walton st" in the search field and > see what options you get. > Out of those options, if your route is in Chicago, and it contains the > word "Walton" in one of the steps, (never mind "St" or "street"), > then that's unlikely to refer to "Walton St, Pensacola, Escambia, FL", > and it is probably "Walton St, Proviso, Cook, IL", so that's your > street! > > -- > Marcelo -http://maps.forum.nu > -- > > > Another complexity is that we are actually interested in when a > > jounrey enters a zone of high traffic, and such zones may well not be > > the full streets (although they also won't just be easy circular or > > polygonal zones either). > > But when I get time this is certainly worth experimenting with to see > > how well it will work. > > > Out of interest - if appears that detection of polyline crossings is a > > common requirement in GIS and I'm wondering if anyone is aware whether > > this might be built into future API versions (or whether it is > > something that the API should / cannot be expected to do)? > > > thanks again, and any other thoughts on the problem are appreciated. > > ...stu > > > On Mar 27, 1:49 am, Rossko <[email protected]> wrote: > > > > > I've been working with the API to draw journeys using various travel > > > > modes as a series of snapped polylines on a map. > > > > > I now need to try and detect when any part of a journey enters / > > > > leaves one of several streets. > > > > Snapped ... to what? Geocoded street address presumably, does this > > > not conatin information you can work with? -- 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.
