[talk-au] Data Error - Junctions ?
Hello again talk-au, I'm new to editing in the OSM project and before I start making significant changes to another's work, I thought I should check with people more experienced with the project to make sure I'm correct. Background: I was having a look at my local area with Keepright and spotted a couple of "dead ended one ways". On close inspection in Potlatch, I see that the junctions have not been formed correctly. The layout of the streets, street names etc all appear to be correct. Well, I fixed those couple of dead ended one ways, but then checking other data around the immediate area, I see that just about all of the regular two way junctions have not been formed correctly. I started to fix them in one block of suburban streets, but the number of problems is significant, so I stopped my work to contact the mailing list to make sure I'm on the right track. (pardon the pun) The area to look at for an example is the hamlet of Hobartville in NSW near Richmond NSW. http://www.openstreetmap.org/?lat=-33.60619lon=150.74622zoom=16 As a specific example, if you look at Luttrell Street in Hobartville http://www.openstreetmap.org/?lat=-33.607542lon=150.745566zoom=18layers=B000FTF you will see that none of the junctions for side roads are correctly joined to Luttrell Street. This problem appears to be repeated across the area generally. My Plan: I'll do a detailed GPS trace of the area and double check all of the street names, then assuming that I'm correct and all of these streets need to form standard junctions, I'll go ahead and edit the area street by street with my trace and street names for reference to correct the junction issue. I wonder why these don't show up in Keepright with the "almost-junctions" check? Assuming this is an error on the part of the person who originally entered the data, is it prudent to contact them to let them know in case they continue to enter data this way ? Any advice or suggestions appreciated. Rick ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Data Error - Junctions ?
you will see that none of the junctions for side roads are correctly joined to Luttrell Street. This problem appears to be repeated across the area generally.br They should be joined with nodes at the junctions for all junctions, T or cross roads. It does not make much difference to the renderers but does for routers like gosmore. I'll do a detailed GPS trace of the area and double check all of the street names, then assuming that I'm correct and all of these streets need to form standard junctions, I'll go ahead and edit the area street by street with my trace and street names for reference to correct the junction issue.br br I wonder why these don't show up in Keepright with the almost-junctions check?br br Maybe not close enough, or too many errors showing up as keepright only shows 100 at a time. Assuming this is an error on the part of the person who originally entered the data, is it prudent to contact them to let them know in case they continue to enter data this way ?br br Probably a good idea. -- Cheers Ross ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Data Error - Junctions ?
Delta Foxtrot wrote: Because they aren't joined, Hi Delta, thanks for the reply. Because they aren't joined is exactly the reason they should show in Keepright IMO, although I take your point about false postives with service roads etc. >From Keepright: "almost-junctions Streets that have (at least) one unconnected end are examined here. If such an end-node is very close to any other way an error is reported. Unconnected end-nodes should probably be connected to adjacent ways." In the situation that prompted my original mail, most of these streets have no node connection to other ways whatsoever, and they are all very close to another way, because they indeed form junctions with those roads that they are very near. I'll play around with Keepright to see if I can get the errors to show, perhaps I'm doing something wrong with the number of error limit. Cheers, Rick ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
Re: [talk-au] Data Error - Junctions ?
2009/6/18 Rick Peterson ausr...@iinet.net.au: Background: I was having a look at my local area with Keepright and spotted a couple of dead ended one ways. On close inspection in Potlatch, I see that the junctions have not been formed correctly. The layout of the streets, street names etc all appear to be correct. Well, I fixed those couple of dead ended one ways, but then checking other data around the immediate area, I see that just about all of the regular two way junctions have not been formed correctly. I started to fix them in one block of suburban streets, but the number of problems is significant, so I stopped my work to contact the mailing list to make sure I'm on the right track. (pardon the pun) There are huge numbers of these around Australia. I think a lot of them are caused by people who originally traced the ways from imagery, and didn't make sure that the ways connected up properly (or at all, in some cases). It's gotten to the point where every time I edit an area to add names, etc the first thing I do is run an error check (I use JOSM) and fix as many as possible from the data I have. Otherwise when I get to the point of checking my own edits, they're swamped in other problems. I wonder why these don't show up in Keepright with the almost-junctions check? Maybe it's almost is closer than you might expect, or perhaps it's just buggy. Or there's so many errors it runs out before finishing the check? Stephen ___ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
