Hi Austin, With the experience I have doing import and road capture with my GPS I came to the conclusion that if the data is bad I would delete it. If I were the initial author of that road I you delete it with a complete set of new roads I would be very happy because you bring OSM in a better project.
So go ahead upload and thanks to participate in OSM. Michel 2009/6/7 Austin Henry <[email protected]> > Hi all, > > I'm working on importing (most of) the 082E tile, and the part of the > import process where you match roads in RoadMatcher is taking ages, even > though there's very little data in OSM for the area (the reason I picked > this tile, along with the fact that I used to live in the area). The > reason it's taking so long is the fact that the OSM data for Highway 3 > and the NRN data are very different in places. > > It seems like a combinations of things might have affected the data > that's present now: > - valleys throwing the GPS accuracy way out (or killing it entirely, and > enabling the "feature" of garmin (and other?) units where it just > interpolates until it gets a lock back); > - low sampling frequency in the saved GPX tracks, which then got > imported directly, or was traced at low zoom levels (the satellite > data for most of highway 3 is low-res); > - there are certainly other scenarios, but it's getting late and my > brain's a bit fuzzy from staring at RoadMatcher for hours. > > It looks like the data was generally collected in one drive through by a > non-local. I'm not saying the data's crap, some of is really quite > good. But there are parts of it where it looks like a helicopter was > used :) And I'm not entirely sure how trustworthy the NRN data really > is -- presumably it's good enough for the government to use, and most of > it says the positional accuracy is 25m or less... > > So, what should I do for an upload? Just upload the standalone portions > like the process says, or should I upload all of the data, and delete > the current OSM data where it's strange? > > The files for this tile are at > http://drop.io/bvhw44o#list/sort_by_name/order_by_asc/60 > for those who might wish to look at it. I can find bounding boxes for > some examples if folks wish them. > > peace, > Austin. > > -- > Build a man fire, he'll be warm for a day. > Set a man on fire, he'll be warm for the rest of his life. > > _______________________________________________ > Talk-ca mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/talk-ca > -- Michel Gilbert
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