[Talk-GB] addr:place cleanup process

[Greg]

Hi Rob,

I’m afraid I haven’t had the time to read the full threads on addressing and addr:place yet, but as you mentioned OS Open Names you might be interested in the code/approach for the Food Hygiene Open Data OpenStreetMap Tool (FHODOT), which attempts to parse freeform addresses into OSM tags and makes use of OS Open Names.

It generates addr:hamlet/village/town in addition to using a Wikipedia list of postal towns for addr:city. This seemed like the best approach at the time, although that may prove not to be the case depending on these discussions.

In any case the code is at https://github.com/gregrs-uk/fhodot <https://github.com/gregrs-uk/fhodot> and is under a free licence (GPL). You can see how it works at https://gregrs.dev.openstreetmap.org/fhodot/ <https://gregrs.dev.openstreetmap.org/fhodot/>.

Best wishes,
Greg


> On 14 Jan 2022, at 19:24, Rob Nickerson <rob.j.nickerson at gmail.com> wrote:
> 
> Hi all,
> 
> There has not really been any comments on the process steps in JOSM so I don't know if I should proceed or not. I guess I will wait a bit longer as it's only been a day so far.
> 
> In the meantime, I was thinking about what other approaches we could use to help with this clean up effort. I realised that there is the OS Open Names data set which includes a list of populated places (i.e. settlements). If these values match an addr:place tag then it is a good indication that the addr:place tag is wrong and should be addr:suburb or addr:city instead.
> 
> I have therefore made a spreadsheet of all the addr:place tag values (downloaded from TagInfo GB) that match an OS Open Names "populatedPlace" value.
> 
> I've marked a few  rows as fixed in the spreadsheet based on the edits I made to test the JOSM approach. The spreadsheet is open access so feel free to use this tracker. It is sorted by highest to lowest use of the addr:place tag.
> 
> https://docs.google.com/spreadsheets/d/1BGeIyhlL-UODGOVJK543Iy699guc3C6Z0udFE57tYu0/edit?usp=sharing <https://docs.google.com/spreadsheets/d/1BGeIyhlL-UODGOVJK543Iy699guc3C6Z0udFE57tYu0/edit?usp=sharing>
> 
> Thanks,
> Rob
> 
> 
> On Thu, 13 Jan 2022 at 23:51, Rob Nickerson <rob.j.nickerson at gmail.com <mailto:rob.j.nickerson at gmail.com>> wrote:
> Hi all,
> 
> As we learnt the other week, the addr:place tag has often been incorrectly used here in the UK. The tag addr:place is meant to be used when the address does not reference a street (tagged with addr:street) at all. This is frequently seen in small villages in continental Europe which often don't have any street names at all.
> 
> In the UK most cases of addr:place and addr:street being used together are incorrect and are cases where addr:suburb should have been used instead of addr:place. You can browse the Nominatim QA <https://nominatim.org/qa/#map=8.06/53.26/-0.64&layer=addr_place_and_street> to find examples and help clean these up. 
> 
> To help with this clean up effort I have tested an approach in JOSM that some might consider as captured by the Automated Edits code of conduct. I therefore wanted to share this process before proceeding.
> 
> Step 1:
> Identify a potentially incorrect use of the addr:place tag. To do this I am looking at the list of values used on TagInfo GB and checking if any of these are villages/towns. If they are then there is a high chance that the addr:place tag is incorrect.
> https://taginfo.openstreetmap.org.uk/keys/addr%3Aplace#values <https://taginfo.openstreetmap.org.uk/keys/addr%3Aplace#values>
> 
> Step 2:
> Open the data in JOSM using an overpass query. An example query I am using to download the data is:
> 
> [out:xml][timeout:90];
> {{geocodeArea:England}}->.searchArea;
> (
>   nwr["addr:place"="Eccleston"](area.searchArea);
> );
> (._;>;);
> out meta;
> 
> Step 3:
> Inspect the data in JOSM paying particular attention to other addr:* tags. To do this I start by doing a Ctrl+F and search for e.g. "addr:place"="Eccleston". This selects all the features with this tag. I can then see the full range of addr:* tags used on these features. High use of addr:street reiterates the incorrect use of addr:place. I can also see if the addr:suburb tag has been used on any features -> if it has then I go investigate this separately. I also investigate uses of all other addr tags except housenumber/name, unit, flats and street.
> 
> Step 4
> Change addr:place to add:suburb. I get to this stage quicker if step 3 does not identify any conflicting addr:* tags (e.g. if the only other addr tags are housenumber/name and street). The more addr:* tags there are the more I look into individual OSM features before making this change.
> 
> As always, if in doubt then I don't proceed.
> 
> How do you feel about this sort of approach? With proper time spent carefully looking at the other addr tags that have been used, then I believe it is a low risk edit.
> 
> P.S. Feel free to check out the results of a couple trials I made. e.g. https://www.openstreetmap.org/changeset/116122672#map=14/53.6500/-2.7281 <https://www.openstreetmap.org/changeset/116122672#map=14/53.6500/-2.7281> I'll pause on making more as I realise I should get the discussion going first.
> 
> Thank you,
> Rob
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