[Photon] Q: can photon search on tags? Can I add it?

Mon Jan 12 17:56:52 UTC 2015

Hi Sashin,

For my use case we needed to filter out all POIs and certain other tags. I made a solution for this (beware, it is pretty quick'n'dirty and could use some optimizations) for Photon. I use a json file with a tag->value whitelist, so the importing process only uses the tags of the json file for the index. You could take a look at this (closed) PR here: https://github.com/komoot/photon/pull/129

It might help you solve your use case,

Greets,

Sander van Tulden

Op 12 jan. 2015 om 18:46 heeft Sachin Dole <sdole at genvega.com<mailto:sdole at genvega.com>> het volgende geschreven:

That is very nice of you not only to reply but also to add reg_name to index.

I have another q for you, please: how can I use photon to search with a filter on tags? For example, I know that my app is only interested in nodes, ways and relations that have the tag with key "tourism" or a combination of a few different tags. In this case, I would like to completely filter out Hawaii county from results, while, still showing Hawaii state and Hawaii airport and various beaches in Hawaii state.

Once again, I would love to roll up my sleeves and get my hands dirty if that's what it will need.

Thank you once again.

On Jan 12, 2015 11:22 AM, "Christoph Lingg" <christoph at lingg.eu<mailto:christoph at lingg.eu>> wrote:
Hi Sachin,

thanks for your feedback. Photon searches in much more than name, also street country, housnumber, postcode and administrative levels.

We are already including a bunch of name variants, like loc_name.

Reg name is not used very often, see http://taginfo.openstreetmap.org/keys/reg_name. Anyway, you were just writing at a moment when I was working on the importer, so I just  regional names to the photon index. see https://github.com/komoot/photon/commit/a8bc9b255ddffd47103172b579e47fd38c642786

We are currently working on reimporting new data, if we are lucky we will have a new photon version by the end of this week. Keep the finger crossed.

Cheers,
Christoph

Am 12.01.2015 um 13:09 schrieb Sachin Dole <sdole at genvega.com<mailto:sdole at genvega.com>>:

Hello,

Can photon search on other tags than just name? For example, if you search for "Big Island", photon does not return the main island of United States state of Hawai'i. On nominatim, it returns correctly. In this case, the "name" of the relation is "Hawai'i" but "reg_name" is "Big Island" and nominatim search correctly. If photon currently does not allow for this, can I try to add this ability on a fork? I will have to start from scratch (create a new database etc), and I have no problem doing so if indeed it is needed. If it already exists, it will be great if you can show me an example on http://photon.komoot.de/

THANKS a lot!

Best,
Sachin Dole

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