Boundary geocoder

[digitalWestie]

In the following folder there's ruby code for determining the local authority a set of coordinates are found in:

https://github.com/openactive/api-dashboard/tree/master/lib/local_geocoder

It uses a ruby library called 'local-geocoder' which provides a geometry class with a contains_point? method.

The goal here would be to write equivalent version, but in python. It's possible someone has done this before so first step is to research code elsewhere.

This above example is fixed to UK local authorities, whereas we want to work to something a bit more abstract if possible.

Edit- it looks like the shapely library is the one we're after:

https://stackoverflow.com/questions/20776205/point-in-polygon-with-geojson-in-python

[Mike-Heneghan]

Spatial Data: https://spatialdata.gov.scot/geonetwork/srv/eng/catalog.search;jsessionid=C2E7BCE5BCC10F4E43717825B3982CC5#/metadata/f12c3826-4b4b-40e6-bf4f-77b9ed01dc14

Geodecoder: https://mygeodata.cloud/converter/wfs-to-geojson

[Mike-Heneghan]

Objective is an array of boundary data matches:

[{'code-type':'local_authority', 'code':'S12000046', 'name': 'Glasgow City' }, {{'code-type':'health_board', 'code':'S08000021', 'name': 'Glasgow Area } ]

[Mike-Heneghan]

Geo Data for Scottish Local Authorities:

• https://github.com/martinjc/UK-GeoJSON/tree/master/json/administrative/sco

[Mike-Heneghan]

The ultimate goal of the feature is:

• To create a search which can match boundaries providing taking a (lat,lng) as arguments.
• To create a way of checking how many services are in a boundary.

[Mike-Heneghan]

• [x] Need to move the geocoder code into search.py and add tests to ensure it's working correctly.

[Mike-Heneghan]

To do:

• [x] Find more boundary geo data to test against.
• [x] Update the boundary check to use the extra data sets.
• [x] Find a way to process the keys dependent on the data set?

[Mike-Heneghan]

Required methods:

• A method which takes a data_set, data_set_keys, and lat-long) and returns match objects i.e. {'code-type':'local_authority', 'code':'S12000046', 'name': 'Glasgow City' }.

[Mike-Heneghan]

Download QGIS version=3.4.8 and try to process the Health Board boundary data and convert into the correct format.

[Mike-Heneghan]

Health Integration Authorities (HSCP):

https://spatialdata.gov.scot/geonetwork/srv/eng/catalog.search;jsessionid=B56BC78E7E3D46F6847E18A7AF298975#/metadata/ac5e870f-8fc2-4c21-8b9c-3bd2311a583f

[Mike-Heneghan]

Now a long_lat can be passed in as an argument to check_boundaries and an object of all matching boundaries is returned.

[Mike-Heneghan]

Refactor the boundary_mappings as dictionaries and remove the unnecessary repetition of long_lat

[Mike-Heneghan]

Merge into master