Incorrect locality interpolation

[ambrusadrianz]

Hey team!

I was using your awesome geocoding engine when I noticed something interesting.
Let me tell you more about it.

---

Here's what I did 😇

https://pelias.github.io/compare/#/v1/autocomplete%3Flayers=street&focus.point.lat=59.4391&focus.point.lon=17.9415&text=granva&size=1

---

Here's what I got 🙀

{
  "geocoding": {
    "version": "0.2",
    "attribution": "http://api.yourpelias.com/attribution",
    "query": {
      "text": "granva",
      "parser": "pelias",
      "parsed_text": {
        "subject": "granva"
      },
      "size": 1,
      "layers": [
        "street"
      ],
      "private": false,
      "focus.point.lat": 59.4391,
      "focus.point.lon": 17.9415,
      "lang": {
        "name": "English",
        "iso6391": "en",
        "iso6393": "eng",
        "defaulted": false
      }
    },
    "engine": {
      "name": "Pelias",
      "author": "Mapzen",
      "version": "1.0"
    },
    "timestamp": 1582112887879
  },
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "geometry": {
        "type": "Point",
        "coordinates": [
          17.950292,
          59.413714
        ]
      },
      "properties": {
        "id": "polyline:481559",
        "gid": "openstreetmap:street:polyline:481559",
        "layer": "street",
        "source": "openstreetmap",
        "source_id": "polyline:481559",
        "name": "Granvägen",
        "street": "Granvägen",
        "distance": 2.869,
        "accuracy": "centroid",
        "country": "Sweden",
        "country_gid": "whosonfirst:country:85633789",
        "country_a": "SWE",
        "region": "Stockholm",
        "region_gid": "whosonfirst:region:85688429",
        "region_a": "ST",
        "county": "Stockholm",
        "county_gid": "whosonfirst:county:1159303035",
        "localadmin": "Vantor",
        "localadmin_gid": "whosonfirst:localadmin:1125362217",
        "locality": "Stockholm",
        "locality_gid": "whosonfirst:locality:101752307",
        "neighbourhood": "Kista",
        "neighbourhood_gid": "whosonfirst:neighbourhood:85902231",
        "continent": "Europe",
        "continent_gid": "whosonfirst:continent:102191581",
        "label": "Granvägen, Stockholm, Sweden"
      },
      "bbox": [
        17.949897,
        59.412975,
        17.951959,
        59.414611
      ]
    }
  ],
  "bbox": [
    17.949897,
    59.412975,
    17.951959,
    59.414611
  ]
}

---

Here's what I was expecting ✨

Something seems to be off with the lookup. This street should be in Sollentuna locality (kommun) not in Stockholm.

[missinglink]

Hi @ambrusadrianz, this record was associated with Stockholm because the lat/lon is contained within this polygon https://spelunker.whosonfirst.org/id/101752307/

I'm not familiar with Stockholm geography, is this shape not correct?

[missinglink]

We also have this polygon https://spelunker.whosonfirst.org/id/1125772423/

[missinglink]

this tool illustrates some of the upcoming functionality of our new spatial service: https://spatial.synergy.io/explore/pip#13/59.413714/17.950292

[ambrusadrianz]

I'm not really familiar with Stockholm geography neither. I just happen to work on a project which needs geocoding for Sweden.

Sollentuna is just a locality inside Stockholm county as far as I know. So this Stockholm polygon might be too broad.

OpenstreetMap Nominatim seems to get this right. query for granvagen

[ambrusadrianz]

The problem might be with the WOF locality placeType classification. Because this seems more like Stockholm county.

[missinglink]

We don't currently use OSM boundary data, although this is on the roadmap.

If you compare the records from WOF and OSM you'll find that they are very similar:

• https://spatial.synergy.io/explore/place/osm/relation%3A398023
• https://spatial.synergy.io/explore/place/wof/1125394701

Some options for you:

• Open a bug report at https://github.com/whosonfirst-data/whosonfirst-data highlighting an error (if there is one?) in the WOF data and offering a suggested edit to fix it
• If there is a bug in wof-admin-lookup then let us know, I don't believe the bug is within Pelias
• Sponsor or contribute to the new spatial service which will allow a mix of WOF and OSM boundary data in Pelias.

[ambrusadrianz]

The new spatial service looks really cool. I will check it out. Keep up the good work 👍

Seems like the WOF classification for that area is too broad, I will put an issue on WOF to see what they think.

Do you have a roadmap for the spatial service?

[ambrusadrianz]

@missinglink this can be closed I think. Added one on WOF: whosonfirst-data/whosonfirst-data#1794

Thanks for the fast responses 👍