On Sat, Aug 15, 2015 at 6:43 AM, Colin Smale <colin.sm...@xs4all.nl> wrote:
> So who decides what is good data and what is bad data? > The community as a whole decides what is good and bad data. That starts with the local community and moves up to the OSM community as a whole in terms of whether or not data belongs in OSM or not. > And "visibility on the ground" needs nuancing. Are we to remove > underground pipelines/power lines? > If you were able to go underground, then you'd find such data. But if you can't- how do you know these lines exist? You probably are using a feature that you *can* see without being underground. > Or boundaries? > I specifically addressed political boundaries in my previous mail. "Visible and/or verifiable" might be better. A rule that needs loads of > exceptions, is not a well formed rule. > Verifiable and visible are essentially synonymous in this discussion. > An abandoned railway route IS an abandoned railway route, even today (i.e. > that is current data). It WAS a working railway line. That is all > verifiable. > Yes, but we don't map things that used to be present but are no longer present. A road used to be here but is now a building. We don't map the old road, only what's present now. - Serge
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