[Tagging] Blatant tagging for the renderer: bridges & abandoned railways

phil at trigpoint.me.uk phil at trigpoint.me.uk
Mon Mar 9 16:30:19 UTC 2015

You should show them RichardF's cycle.travel site as a different way of rendering OSM, and it shows old railways.

Phil (trigpoint )

On Mon Mar 9 16:18:39 2015 GMT, ael wrote:
> On Mon, Mar 09, 2015 at 04:14:58PM +0100, Michael Reichert wrote:
> > Hi,
> > 
> > Am 2015-03-09 um 16:06 schrieb ael:
> > > Well, I have only changed the tag on the bridges themselves, and only on
> > > ways for which I did the original (and usually any subsequent) survey
> > > and edits. So I am not corrupting other people's data.
> > 
> > Wrong! You have corrupted data because you have changed tags to values
> > which are wrong. What about people who want to calculate the length of
> > the railway network including disused tracks which have not been removed
> > yet (and therefore are easy to reactivate)?
> That is ludicrous. I have changed a few metres only. The error bars on
> my surveys of several km of abondoned railway will far exceed that.
> > The edits you did can be described as (semi-)vandalism.
> That sort of comment is unworthy of OSM. I did the surveys. Very
> carefully. I tagged corectly as far as I knew at the time. I only
> changed a very small section on a couple of bridges to explore the
> rendering and was unaware of this hornets' nest of bickering. And
> consulted this list.  Another mapper who has given no source has added
> 1/2 km or more of track that I am fairly confident no longer exists: I
> intend to try to survey to confirm or refute, but it is on private
> ground.  He also added an entirely ficticious section of railway right
> across what is now a dual carriage way and other developments.  That
> might perhaps be near vandalism, although I suspect that he was a novice
> perhaps looking at an historical route, perhaps without realizing that
> he was modifying the database.
> Your sort of comment to someone who has contributed years of solid work
> to OSM is enough to make me consider ceasing to contribute.
> > Well, if these people do not like OSM because /one/ OSM-based map does
> > not show a couple of bridges, it is not bad if they do not use OSM. OSM
> > is a database and no map! Please explain this if they ask why osm.org
> > does not show bridge X.
> Many are likely to be complete novices, and even drawing that
> distinction at their first brush with the project might put them off.
> If I still give the talk after this reaction, I will pitch as best
> I can to the audience. If they are at the right level, obviously
> I will explain and illustrate the distinction between the data base
> and rendering. But that may be way over the heads of some local
> politicians. Or not.
> ael
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