GeoHub LA Data Collection

Note: This repo has been merged into Hack for LA's district-files: [https://github.com/hackforla/district-files]. Ongoing development is there.

Overview

This project collects district boundary files for various political and administrative districts within Los Angeles County.
The data is converted into both raw JSON and GeoJSON formats for easy use in civic tech projects.
The processed data will be contributed to Hack for LA.

For questions or collaboration, reach out on GitHub: @parcheesime.

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Districts Covered

• Assembly
• Senate
• Neighborhood Councils
• Supervisors
• Congressional
• City Clerk (BIDs)
• City Council

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Data Collection Process

The data collection process is facilitated using the GeoHub LA County Website and related ArcGIS APIs.

Steps

1. Authentication: No key required.
2. Requesting Data: Python script sends requests to API endpoints for each district.
3. Data Processing: Responses are saved in two formats:
   • Raw ArcGIS JSON (district.json)
   • GeoJSON (district.geojson)
4. Data Storage: Output files are stored in shapefiles_output/.
5. Automation: A GitHub Actions workflow will be configured to run this process on a weekly or monthly basis via update_shapefiles.yml.

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Repository Structure

geohubLA_data_collection/ │ ├── main.py # Script to fetch and save district shapefiles ├── shapefiles_output/ # Folder where JSON and GeoJSON outputs are stored ├── example_usage.ipynb # Jupyter notebook demo of loading and plotting data ├── requirements.txt # Python dependencies └── README.md # Project documentation

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Installation & Setup

Clone the repository

git clone https://github.com/<your-org>/geohubLA_data_collection.git
cd geohubLA_data_collection

Installation & Setup

Create and activate a virtual environment

python3 -m venv myenv
source myenv/bin/activate

install requirements

pip install -r requirements.txt

Run main and example usage

python main.py
jupyter notebook example_usage.ipynb