From e7169ad90280e7431ae62fbac4e41252ffcd9f76 Mon Sep 17 00:00:00 2001 From: Chris Hill-Scott Date: Thu, 24 Sep 2020 13:19:27 +0100 Subject: [PATCH] Add instructions for converting Shapefiles --- app/broadcast_areas/source_files/README.md | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 app/broadcast_areas/source_files/README.md diff --git a/app/broadcast_areas/source_files/README.md b/app/broadcast_areas/source_files/README.md new file mode 100644 index 000000000..17209b349 --- /dev/null +++ b/app/broadcast_areas/source_files/README.md @@ -0,0 +1,17 @@ +# 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](https://geoportal.statistics.gov.uk/), 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