pdnpa / np-ons-areas

Output Area aggregation to National Park

Output Area matching for National Parks England IDBR DATA

• 26 October 2022 National Parks of England
• 6 October 2021 National parks of England

National Parks Address Processing

This repository contains scripts for processing address data within National Parks in England. The scripts perform the following tasks:

1. Clip address data to the boundaries of National Parks.
2. Filter residential addresses and combine them into a single shapefile.
3. Calculate population and address statistics for output areas intersecting National Parks.

Directory Structure

.
├── data
│   ├── ABPOGB_CSV
│   ├── AddressBasePremium
│   ├── National_Parks_Buffer.shp
│   ├── National_Parks_(England)___Natural_England.shp
│   ├── OA_2021.shp
│   ├── oa_age_bands.csv
│   └── Output_Areas_2021
├── scripts
│   ├── clip_address_base.py
│   ├── filter_residential_properties.py
│   └── output_area_population.py
├── README.md

Data Sources

• Output Areas (December 2021) Boundaries EW BFC (V8) Date updated 05/31/2024 | 2021, ONS Geography Open Data
• TS007A - Age by five-year age bands Total, ONS Crown Copyright Reserved [from Nomis on 26 July 2024] | | Office for National Statistics
• National Parks (England), June 18th 2024 | Natural England Open Data Publication
• AddressBase | 0Ordnance Survey Digital Data
• National park residents, England and Wales: Census 2021 | Office for National Statistics

Requirements

• Python 3.9
• pandas library
• geopandas library
• shapely library
• tqdm library

Scripts

1. clip_address_base.py

This script clips the AddressBasePremium data to the boundaries of National Parks.

• Loads the National Parks buffer shapefile.
• Reads the AddressBasePremium data in chunks.
• Clips each chunk to the National Parks boundaries.
• Saves the clipped data as temporary shapefiles.

2. filter_residential_properties.py

This script filters residential properties from the AddressBasePremium data and combines them into a single shapefile.

• Loads the clipped shapefiles from the previous step.
• Filters residential properties based on the CLASS column.
• Combines the filtered data into a single GeoDataFrame.
• Exports the combined residential addresses to a shapefile.

3. output_area_population.py

This script calculates population and address statistics for output areas intersecting National Parks.

• Loads the Output Areas shapefile, population CSV, National Parks shapefile, and residential addresses shapefile.
• Clips the Output Areas shapefile to the National Parks boundaries.
• Adds the name of the National Park to each Output Area.
• Merges population data with the clipped Output Areas.
• Counts the number of residential addresses inside and outside the National Parks for each Output Area.
• Exports the final data to a shapefile.