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data downloading

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Ed Chalstrey 2022-03-09 13:24:27 +00:00
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etl/README.md
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# Creating a Colouring London database from scratch
## Data loading
## Data downloading
The scripts in this directory are used to extract, transform and load (ETL) the core datasets
for Colouring London:
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1. Building geometries, sourced from Ordnance Survey MasterMap (Topography Layer)
1. Unique Property Reference Numbers (UPRNs), sourced from Ordnance Survey AddressBase
To get the required datasets, you'll need to complete the following steps:
1. Sign up for the Ordnance Survey [Data Exploration License](https://www.ordnancesurvey.co.uk/business-government/licensing-agreements/data-exploration-sign-up). You should receive an e-mail with a link to log in to the platform (this could take up to a week).
2. Navigate to https://orders.ordnancesurvey.co.uk/orders and click the button for: ✏️ Order. From here you should be able to click another button to add a product.
3. Drop a rectangle or Polygon over London and make the following selections, clicking the "Add to basket" button for each:
![](screenshot/MasterMap.png)
<p></p>
![](screenshot/AddressBase.png)
4. You should be then able to check out your basket and download the files
## Prerequisites
You should already have set up PostgreSQL and created a database. Make sure to create environment variables to use `psql` if you haven't already: