8:37 p.m.
Dear Peter,
The issue you describe is familiar to me. The UK OSM ways contain a lot of irregular tag
combinations like usage=yard and usage=cargo. The last couple of months I’ve been working
on these issues (along with adding speed limits) in England, Wales and Scotland. I hope
that it is already solving more and more of the problems you describe.
If you want to contribute, I would recommend to install and use JOSM
(https://josm.openstreetmap.de/). It allows you to download specific relations/ways/nodes
from the OSM database through queries. Another possibility is to search the data you
downloaded for specific properties. You can use these features to look problematic
properties like “railway=rail -usage=* -service=*”. When you found the ways, you can add
the appropriate tags. If you need further help on this, feel free to let me know.
Best regards,
Jeroen
Op 19 mei 2020 om 14:57 heeft Rolf Eike Beer <eike(a)sf-mail.de>
het volgende geschreven:
Am Dienstag, 19. Mai 2020, 12:33:38 CEST schrieb osm(a)peterrobins.co.uk:
> I've been looking at OpenRailwayMap for GB, where I live. I thought at first
> that it was missing numerous lines, but on investigating further I find
> that this is because large numbers of ways have no usage tag, and it looks
> like OpenRailwayMap only shows lines which are not tagged as 'main' or
> 'branch' when you are zoomed right in. Having to edit each way separately
> would be a large amount of work, especially as lines often consist of
> multiple ways. What's the simplest way of (a) finding which ways don't
> currently have it, and (b) adding the appropriate tag? Without it, I fear
> that OpenRailwayMap is of limited use.
I'm not entirely sure if I understand your problem. It may be one of the
following 3 (or something entirely different of course):
-lines with both usage as well as service are not shown: this is a tagging
mistake and we force users to correct there things with that
-lines without usage are not shown at low zoom levels. Things without usage
are likely minor tracks, drawing them on low zoom levels would clutter the
output and slow down the renderer. If it's important, it probably _is_ a main
or branch line.
-lines with some special usage values (like military) are permitted to also
have service tagged, but they are currently not rendered (https://github.com/
OpenRailwayMap/OpenRailwayMap-CartoCSS/issues/7)
11:18 a.m.
New subject: Adding usage tag for multiple ways
hello, Jeroen. I noticed your edits on a couple of lines. After posting here, I changed
the Shrewsbury-Chester line, which immediately provoked a discussion on whether this was a
main or a branch line
https://www.openstreetmap.org/changeset/85440239#map=10/52.8533/-2.9105. There doesn't
seem to be much consistency in these classifications. This route now appears on more zoom
levels on OpenRailwayMap.
This line does not have any relations apart from a route=train one for Chester-Wrexham as
part of WCML to Euston. The neighbouring Crewe-Shrewsbury though has 2 route=tracks. This
seems to me to be a good way to group ways together, but doesn't appear to be
consistently used either. route=train is nice to have, but I would imagine is a large
amount of work to maintain, as services, unlike tracks, change frequently.
I've been looking at Overpass Turbo to familiarise myself with the API. Using 'out
tags' looks like a good way of limiting the output to just a list of which tracks
don't have a usage tag. I'm reluctant to install Java just to use JOSM, but may
well take a look. Thanks for your suggestions.
1674
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1677
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openrailwaymap@openrailwaymap.org
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participants (2)
-
Jeroen Wegdam
-
osm＠peterrobins.co.uk