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[openrailwaymap] Station importance

danmey at danmey at
Sat Apr 11 09:18:23 MEST 2015

this second mail is to think about other ways to determine the 
importance of a station without any specific tag.
I have to say that I have no idea about how difficult it is to render a 
map and define render rules. So throw eggs if these ideas are not really 
thought through...

One way to define the importance of a station could be to have a look a 
the route relations.
How many different route relations are conected with the stop_positions 
of the station? Do these relations have a range of service tags (from 
commuter to long_distance?)
Perhaps we could define a system to evaluate this.

A different way could be the number of platforms: more platforms means 
higher importance.
Either with the platform*s*-Tag 
( But it is not in 
really wide use. I don't use it, either.
But there could be a way to determine the number of platforms through 
the stop_area relation.

Of course, you can show me a lot of examples where a station with few 
route relations / platforms has higher importance than another station 
with more of these.
But as far as I understand the question, the problem is a render problem 
in cases of  collision. This happens with a small number of stations per 
case. So, we don't need absolute importance of stations here, but a 
relative ranking of these few stations.
And I suppose, in most of these cases, a non-perfect method like the 2 I 
proposed, could work.

What do you think?
Greetings, Daniel

Am 29.03.2015 um 22:11 schrieb Alexander Matheisen:
> Hello everybody,
> for rendering, it would be nice to have any information about the
> importance of a station/halt. With this information, the renderer could
> render captions in different zoom levels or font sizes or decide which
> label is rendered in cases of collision.
> Currently we have the tag railway:station_category=1-7 for mapping the
> German railway station category [1]. But this is very german-specific,
> so we should think about a way to tag the importance of a station using
> generic rules that are independent from any country-specific categories.
> Should we use the existing tag railway:station_category=* and translate
> the German definitions, so that they can be applied internationally?
> This would have the advantage that German stations, that are already
> tagged with the existing tag, do not require any retagging. But using
> just numeric values is not so
> Or should we create a new tag a tag like railway:station_importance=*
> with some category values such as local/regional/international/... and
> leave the existing railway:station_category=* tag for mapping
> country-specific categories?
> Any ideas?
> Regards
> Alex
> [1]
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