[talk-au] M4-Parramatta Rd routing
Hi Ben, I found the Parramatta eastbound problem, the bridge near Henly Marine Drive was oneway the wrong way. I fixed it (couldn't help myself). I used Gosmore to check the westbound route to Springfield and all looks fine. I simulation drove Matts maps on the Garmin nuvi 260 and it stuck to the M4 like glue. I found a motorway link wrongway problem at the intersection with James Ruse Drive (also now fixed) but that couldn't have caused your problem. I'll look some more but to date I can't find the problem. I'm not sure how to get an IMG file back into mapsource which is a pity since I find Mapsource a little bit easier to to route checks with than Gosmore (although Gosmore is also more than adequete). Nick ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
[talk-au] Suburb boundaries
Hi. Does anyone have any thoughts on how to mark suburb boundaries (in areas that have them)? The closest thing I can find is boundary=administrative at http://wiki.openstreetmap.org/wiki/Key:boundary but I haven't seen this used anywhere. London uses this to mark boroughs (equivalent to council areas) with left:district=name and right:district=name to indicate the names on either side of the way. The above page seems to indicate that admin_level=10 shows a suburb border in Australia. Has anyone used this tag? How do you show the suburb names? Are there any examples of how this renders? - Ben Kelley. ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Suburb boundaries
Hi Ben, have you managed to find a good source of boundaries for NSW ? cheers On Mon, Jan 12, 2009 at 9:03 AM, Ben Kelley ben.kel...@gmail.com wrote: Hi. Does anyone have any thoughts on how to mark suburb boundaries (in areas that have them)? The closest thing I can find is boundary=administrative at http://wiki.openstreetmap.org/wiki/Key:boundary but I haven't seen this used anywhere. London uses this to mark boroughs (equivalent to council areas) with left:district=name and right:district=name to indicate the names on either side of the way. The above page seems to indicate that admin_level=10 shows a suburb border in Australia. Has anyone used this tag? How do you show the suburb names? Are there any examples of how this renders? - Ben Kelley. ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au -- Franc ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Suburb boundaries
That's a shame. A couple of years ago I had an email conversation with someone from the Lands Department and got permission to 'Derive Suburb Boundaries' - however when I thought about the conversation more deeply I came to the conclusion that it probably wasn't ok as he had probably got a bogus understanding of the OSM license (as I did not understand it that well at the time). Unfortunately, when I went back to contact him he seems to have disappeared. cheers On Mon, Jan 12, 2009 at 4:45 PM, Ben Kelley ben.kel...@gmail.com wrote: Hi. No I haven't found a good source of boundaries. The cadastral layer for the NSW Lands Department geospatial portal probably has them, but I'm not sure of the licensing issues. - Ben. On 1/12/09, Franc Carter franc.car...@gmail.com wrote: Hi Ben, have you managed to find a good source of boundaries for NSW ? cheers On Mon, Jan 12, 2009 at 9:03 AM, Ben Kelley ben.kel...@gmail.com wrote: Hi. Does anyone have any thoughts on how to mark suburb boundaries (in areas that have them)? The closest thing I can find is boundary=administrative at http://wiki.openstreetmap.org/wiki/Key:boundary but I haven't seen this used anywhere. London uses this to mark boroughs (equivalent to council areas) with left:district=name and right:district=name to indicate the names on either side of the way. The above page seems to indicate that admin_level=10 shows a suburb border in Australia. Has anyone used this tag? How do you show the suburb names? Are there any examples of how this renders? - Ben Kelley. ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au -- Franc -- Ben Kelley ben.kel...@gmail.com http://www.users.on.net/~bhkelley/ http://www.users.on.net/%7Ebhkelley/ -- Franc ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Suburb boundaries
On Mon, 2009-01-12 at 17:06 +1030, Darrin Smith wrote: [On the single area option] Personally I think that is still the best approach (the only downside I can see with it would be if a suburb was not defined by a closed area - although I'd imagine that would be quite rare). However, you'll find plenty of others that prefer one of the other two approaches. Yeah I'd have to say I actively dislike this approach because it encourages more and more cases of stacked ways. There's places in northern Adelaide where 1 road would end up with 6 additional ways stacked on top of it to represent this setup :/ ... But when the boundaries (or more often, parts of them) are just imaginary lines, creating multiple ways just for a boundary, then grouping them together as a relation seems like an awful lot of double handling (both for the mapper putting them in the map and for any automated process trying to reassemble them for any useful purpose). For the mapper I'd say this approach is much easier than trying to untangle up to 6 areas stacked on top of each other on a common boundary, 8 along a state boundary! In JOSM, it's fairly simple to see all stacked ways (using the middle mouse button, with control to hold/select) - then (as long as the ways have been tagged) it's very easy to pick the one you want to work with. Not sure whether it's that straightforward in the other editors or not. Also straightforward when working with raw OSM data (again, particularly if the ways have been tagged). With the single area approach, you only ever have to worry about one way per suburb, but you often have to deal with a few stacked ways. Conversely, with the other two approaches, you only have one way in any given place on the map, but you often have a whole swag of boundary ways per suburb. So I guess it's really a case of 6 of one, half a dozen of the other... And 0.6 api relations are ordered, post-processing of them is about to become remarkably easier once clients start putting in the members in order. That sounds more promising. Darrin's mapped most of Adelaide's nothern suburbs using this method, and that's probably the best Australian example of using relations for suburb boundaries (as well as postcode local government boundaries). And haven't I been banging my head against a wall trying to find useful data to do it, council signs only go so far... But surveying those imaginary line parts of boundaries, particularly in areas where there are no houses or businesses close enough to the estimated boundary to be authoritative is a bit more problematic - I haven't come up with a good method yet; perhaps someone else on the list can suggest one? (the Government - including Aussie Post - published data all appears to be encumbered). Yeah, this has caused me the greatest trouble in northern Adelaide as some areas really are vague. I've opted in the end to use a best guess estimate of where they lie, following on from someones comment a month ago when talking about adding roads, that a straight line linking 2 points where a road run was still accurate at some level. My thinking goes - If I know at this point these 2 places are either side of the boundary and over there those 2 places are then it's reasonable as a first cut to just link the two points and hope someone gets some better data later to follow the exact lines. Sounds resonable enough (presumably tagged with source=extrapolation or similar). At least that way, suburb boundaries can be completed. Cheers, Jack. ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
