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

[Sachin Dole]

OK. I will look into this. I will need to start from scratch, so, it might
take me a while to do this. I will report back with questions. Thank you
Sander for the additional response
On Jan 12, 2015 12:04 PM, "Christoph Lingg" <christoph at lingg.eu> wrote:

> Good point Sander. There are two approaches to filter results. I thought
> about importing all documents and filtering on query time, whilst Sander's
> approach avoids even importing those documents.
>
> Cheers,
> Christoph
>
> Am 12.01.2015 um 18:56 schrieb Sander van Tulden <sander.vantulden at falk.nl
> >:
>
>  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> 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> 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>:
>>
>>  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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