notifications-admin/app/broadcast_areas/source_files

Adding or updating source files

If the files are in GeoJSON format you can drop them straight in.

If you have a Shapefile, for example from the ONS Open Geography Portal, you need to convert it:

• download the .zip from the portal
• extract it, giving you a folder with a few files in
• go to https://mapshaper.org
• drag all the files in the folder into mapshaper
• click ‘import’
• you should see a rendering of the shapes
• click ‘console’ (top right)
• run this command: mapshaper -proj wgs84
• click ‘export’ (top right)
• choose ‘GeoJSON’
• click the button
• done