[Taginfo-dev] New functions

[Shaun McDonald]

Hi Jochen,

Thanks for the good work and the reminder to update the GB instance that I run at http://taginfo.openstreetmap.org.uk 

I’ve noticed a minor typo on http://taginfo.openstreetmap.org.uk/reports/historic_development and http://taginfo.openstreetmap.org/reports/historic_development where did’t should be didn’t.

Shaun

> On 4 Mar 2015, at 16:36, Jochen Topf <jochen at remote.org> wrote:
> 
> Hi!
> 
> There are a few new functions available in taginfo:
> - "Similar" tab in key view and "Similar keys" report. Similarity in this
>  context means one key is a substring of the other (ignoring case) or
>  the Levenshtein distance between keys is <= 3. Keys with three characters or
>  less are ignored. The "Similar" tab reports all those keys similar to the
>  given key, the "Similar keys" report only shows rarely used keys that are
>  very similar to common keys. Currently there is no way of tuning the
>  parameters for these checks. Please tell me if you are having problems
>  with the settings for your extract.
> - "Historic development" report showing numbers of unique keys, tags, and
>  relation types over time. This report uses data accumulated over time in
>  the taginfo-history.db database by each taginfo update run. This data
>  wasn't used until now.
> 
> To ease the transition, the "Similar keys" report will show a warning if
> the data needed for the report is not available. After the next update run
> it should just work. The "Similar" tab will only work once the config
> setting 'user_interface.key_page.show_tab_similar' is set to 'true'. By
> default it is 'false'.
> 
> To update to this version:
> - Update taginfo from github.
> - Call 'make' in the 'tagstats' directory. There will be an additional binary
>  called 'similarity'. Set 'sources.db.bindir' to wherever that binary is.
>  The default will just access that 'tagstats' directory, but you can change
>  that if you prefer to have the binary somewhere else.
> - Run the update as usual.
> - If the update ran through properly, there are two new tables in the
>  'taginfo-db.db' called 'similar_keys' and 'similar_keys_common_rare'.
> - Set config 'user_interface.key_page.show_tab_similar' to 'true'.
> - Restart server.
> 
> The main taginfo site should have the updates tomorrow. You can check the
> updates at the test site:
> http://mercator.openstreetmap.de/keys/cuisine#similar
> http://mercator.openstreetmap.de/reports/similar_keys
> http://mercator.openstreetmap.de/reports/historic_development
> 
> Jochen
> -- 
> Jochen Topf  jochen at remote.org  http://www.jochentopf.com/  +49-173-7019282
> 
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