[OSM-talk-be] replace ref on stops De Lijn with mijnlijn.be/x0xxxx

[Sander Deryckere]

2013/1/31 Jo <winfixit at gmail.com>

> Hi,
>
> I like that proposal, but I don't know how to implement it for
> openlinkmap. The developer is accepting patches, but he doesn't have time
> to code stuff himself anymore.
>

That's a pity.

>
> My initial proposal had the advantage of instant gratification. It would
> work with the current tagging habits. It's true that it has the
> disadvantage of being dependent on the continued use of that url domain by
> De Lijn and it's more verbose than I would like.
>

I agree with the advantage it has, but it creates other difficulties like
maintainability of the database. It's like the "Don't tag for the
renderer", only, a bit different.

It's not because openlinkmap displays a certain tag, that we should tag
everything this way.

>
> One small remark. The way I understand it we are moving to replacing
> highway=bus_stop with public_transport=platform. So it should work for that
> combination of tags as well.
>
> And it should be enough that a node contains De Lijn. Some stops are
> shared with MIVB/STIB, TEC and VEOLIA.
>

These are valid remarks, and show why the configuration file should be
crowd sourced. A single developer can never come up with all these
exceptions for all these different nations.

>
> Jo
>
>
I looked at the openlinkmap code, and it seems that he's filtering a lot of
tags before the file gets imported in a database. The filtering also
happens with a program that doesn't allow regex, only wildcards. So reading
such a configuration file would be a hell of a job.

I think I found something better. We could use the osmosis tagtransform
plugin (http://wiki.osm.org/Osmosis/TagTransform).  Where we could use a
configuration file to transform tags to an url:*= tag. Like the example
from De Lijn could be as following: http://pastebin.com/4G4FPyEq (currently
writing to url:delijn, but we could also check for the existence of an url
tag, and write to that if it's not present).

The disadvantages of this tool are that an url tag can only be created from
a single other tag (as the discussion page on the wiki says), And a key
needs to stay a key, and a value needs to stay a value.

Another drawback might be the installation of an extra plugin. It doesn't
seem so easy as it should be (version conflicts etc). But it should be very
straightforward to use the file afterwards, and to have this file crowd
sourced. And, on the positive side, the osmosis team is looking into making
this task part of the standard installation. In which case you won't have
to install anything new at all.

Regards,
Sander
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