On Tue, Jan 31, 2012 at 1:16 PM, Charlotte Wolter <[email protected]> wrote: > Hello, > > After reading Martijn's most recent email, I decided to check my > area of LA for potentially missing streets. I found that portions of West > Olympic Boulevard, a MAJOR LA throroughfare, is among those on death row. > So, I made a few adjustments and changes to Olympic, fixing some > alignments and adding info, such as number of lanes. Since I've signed the > license, is that enough to preserve Olympic Blvd. from extinction? > Also, I am wondering why it's on death row in the first place, since > it undoubtedly was brought in originally as part of a TIGER import. > Shouldn't major streets like this be immune from deletion? In fact, > shouldn't anything from a TIGER import be immune?
The problem is the TIGER import needed a lot of improvement. For example, most TIGER roads are a single way, even for major dual carriageway roads. This means that people have created new ways and copied TIGER tags on to them to match the other carriageway. If the person who did this is a decliner, then that way is on the chopping block. Another way that TIGER data gets tainted is way splitting. TIGER has some very long single ways. People have split the ways to map things like bridges, turning restrictions or route relations. When a way that was originally from TIGER is split, one part will keep the old way ID and be attributed back to the TIGER import. The other part will be a new way and attributed to the person who split the way which might be a decliner. Now, especially in the case of way splitting I'm not sure how much copyright can really be claimed. These are the kind of ways where I tend to make sure there are no dirty nodes, improve geometry if necessary and then add an odbl=clean tag. I have mostly been working in rural areas where it is fairly obvious that nothing besides way splitting was done by the decliner. In busy urban areas things might be more complicated though... Toby _______________________________________________ Talk-us mailing list [email protected] http://lists.openstreetmap.org/listinfo/talk-us
