Serge Wroclawski writes: > Though I'm not the person you're talking about, the problem with your > argument, in your case is that you map things in places you have not > been.
Some, yes, and some, no. How would you know without talking to me? Here's a perfect example: http://www.openstreetmap.org/?lat=42.9072&lon=-73.35237&zoom=15 Do you see a railroad there on the Bing imagery? I don't. I mapped that railbed by looking at aerial photos and old and current public-domain maps. Then I visited it, and it was *exactly* as I had mapped it. Well, being there I found a few improvements, but that's the point, right? And even better, I found out that it was an official rail-trail. > I've seen imported data from you that was created before the LWG's > position on these things, and a lot of it is *highly* suspect. Suspect in what sense? Copyright-infringed? Nope. I use 100% USGS data and in many cases my own eyes. Did that data come from outside OSM? Yes, it came from a pre-OSM database every point of which I clicked. The shapefile is still available at http://russnelson.com/nyrr/ It's the result of decades of work, and you can observe the progress in the changing versions. Don't accuse me of violating copyright. Don't even GO there. http://opensource.org/docs/osi-emeritus-members Have I done the field work to verify all of this mapping? No. Here is my todo list: http://rutlandtrail.org/todomap.cgi Feel free to ask me to add to it. > So I can imagine that someone else, encountering similar data, would > make a similar conclusion "This data is wrong, thus needs to be > removed. When I've encountered this kind of data from you, I've > reached out and contacted you, and you've corrected some of it. Imagine away, but they left out the "contacted you" part. > As a mapper, you have mapped from third party sources and not been in > the place physically to confirm. But you expect other mappers to have > a different threshold for deleting these edit, why? Because they are not an expert. Sorry, they're not. You have to use multiple sources to find a railroad right-of-way. You can't just look at a leafed-over aerial photo (as above), or an aerial photo where you can't identify the railroad remains. Sometimes it's as subtle as a tree-row with a few extra-tall trees (I traded the SH&E that way and later found a US Army map that had the whole thing mapped exactly as I had it). Sometimes it's a pile of rocks or a bit of concrete that doesn't belong there. Sometimes it's buildings with a corner cut off, or a wall askew. Sometimes it's a bit of pavement that's a darker color. You go look on the old maps to confirm, and yep, it's there. Sometimes it's just a vague shadow on a not-current but not particularly old aerial photo. > I agree that we need better communication mechanisms and better > monitoring of edits. I do not agree that deletions should only happen > when someone has physically gone into the area other. I didn't say that, and I agree with you. I said that if you haven't been there, and the person who put it there objects, you should presume that they know better than you. Humility, not arrogance. -- --my blog is at http://blog.russnelson.com Crynwr supports open source software 521 Pleasant Valley Rd. | +1 315-600-8815 Potsdam, NY 13676-3213 | Sheepdog _______________________________________________ talk mailing list talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk
