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Project description
Whereabouts
Fast, scalable geocoding for Python using DuckDB
Description
Geocode addresses and reverse geocode coordinates directly from Python in your own environment.
- No additional database setup required. Uses DuckDB to run all queries
- No need to send data to an external geocoding API
- Fast (Geocode 1000s / sec and reverse geocode 200,000s / sec)
- Robust to typographical errors
Currently only working for Australian data.
Requirements
- Python 3.8+
- Poetry (for package management)
Installation
Once Poetry is installed and you are in the project directory:
poetry shell
poetry install
- Download the latest version of GNAF core from https://geoscape.com.au/data/g-naf-core/
- Update the
setup.yml
file to point to the location of the GNAF core file - Finally, setup the geocoder. This creates the required reference tables
python setup_geocoder.py
Examples
Geocode a list of addresses
from whereabouts.Matcher import Matcher
matcher = Matcher(db_name='gnaf_au')
matcher.geocode(addresslist, how='standard')
For more accurate geocoding you can use trigram phrases rather than token phrases
matcher.geocode(addresslist, how='trigram')
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