https://github.com/hubgit/boundary-line-constituencies-simplified
A simplified version of the Ordnance Survey UK parliamentary constituencies shapefile
https://github.com/hubgit/boundary-line-constituencies-simplified
Last synced: 3 months ago
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A simplified version of the Ordnance Survey UK parliamentary constituencies shapefile
- Host: GitHub
- URL: https://github.com/hubgit/boundary-line-constituencies-simplified
- Owner: hubgit
- Created: 2015-01-02T10:37:38.000Z (over 11 years ago)
- Default Branch: master
- Last Pushed: 2015-01-02T15:00:38.000Z (over 11 years ago)
- Last Synced: 2026-03-01T19:48:52.564Z (4 months ago)
- Language: Makefile
- Size: 27.8 MB
- Stars: 2
- Watchers: 1
- Forks: 0
- Open Issues: 0
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Metadata Files:
- Readme: README.md
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README
## Description
The [Ordnance Survey's Boundary-Line](http://www.ordnancesurvey.co.uk/business-and-government/products/boundary-line.html) shapefile for UK parliamentary constituencies is 70MB, which is too large for CartoDB's free plan.
These versions of the shapefile are simplified to 1% or 10% of the size, by removing detail from the polygons.
## Usage
Upload [simplified-1/westminster_constituencies.zip](simplified-1/westminster_constituencies.zip) to CartoDB.
## Build
* `npm install`
* `make`
## Sources
### [Boundary-Line](http://www.ordnancesurvey.co.uk/business-and-government/products/boundary-line.html)
Click "Free download", check the "Download" box for the Boundary-Line product, select "ESRI Shape" format, click "Next", fill in the form, wait for the email to arrive, download the zip file, extract the `Data/westminster_const_region.*` files.
### [mapshaper](https://github.com/mbloch/mapshaper)
* `npm install -g mapshaper`
### [CartoDB](https://cartodb.com/)
* Login, click "View your tables", click "New table",
* Upload the `westminster_constituencies.zip` file.
* https://hubcart.cartodb.com/tables/westminster_constituencies
## License
Contains Ordnance Survey data © Crown copyright and database right 2014
http://www.ordnancesurvey.co.uk/opendata/licence