[OSM-dev] tag implication database/library

[François Lacombe]

Hi Per Eric,

What you are looking for is definitely on the wiki side.

The information isn't available as described for now but it would be
interesting to document tags like this.
And a new application/projet might not be necessary if wiki can support it.


That question was rose a few times ago.

All the best

*François Lacombe*

fl dot infosreseaux At gmail dot com
www.infos-reseaux.com
@InfosReseaux <http://www.twitter.com/InfosReseaux>

2016-11-17 11:51 GMT+01:00 Per Eric Rosén <per at rosnix.net>:

> Hi!
>
> I have been making a few maps and applications using OSM data, mostly
> stored in postgis. In all cases, I have had to make custom carto rules /
> database post-processing / application rules to compensate for multiple
> ways of expressing the same information in OSM. Also, in some cases,
> for taking care of which tag implies which information.
>
> Is there some way of doing this just once; for example with some parseable
> implication database, and library? There is some "implies" on the wiki; but
> it's not completely chine-readable in a reliable way.
>
> Such a database would probably also need being optionally keyed on
> country, "highway=cycleway" may imply different rules in different
> countries for example.
>
> Would such a tool/database be useful, if not existing already?
>
> I see two somewhat different usage cases, and I don't know if the same
> tool/database should be used for both:
>
> 1. normalizing a database before usage, for example changing
>    "highway=ford" to "ford=yes" and moving to modern lifecycle tags
>
>    (it could be argued that this shoud be done on the main OSM database
>     by a bot, but data consumers could probably have larger or more
>     specific needs of normalization compared to what can be agreed to do
>     by changing the master OSM data)
>
> 2. getting specific implications without writing it to a database, for
>    example highway=cycleway implies bicycle=yes, foot=yes in country X
>
> best regards
> Per Eric Rosén
> --
> ^): Per Eric Rosén http://rosnix.net/~per/
> /   per at rosnix.net GPG 7A7A BD68 ADC0 01E1 F560 79FD 33D1 1EC3 1EBB 7311
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