Overture GERS Tiles Example

April 29, 2026 · View on GitHub

Generates a vector tileset of Overture Maps Places for Dallas, TX, joined to parcel zoning data from Regrid via the Overture Global Entity Reference System (GERS).

View the tileset at bdon.github.io/overture-gers-tiles-example/.

Data sources

  • Overture Places (overture_dallas.parquet) — point-of-interest data with GERS IDs and confidence scores, queried by bounding box from the official Overture S3 bucket (s3://overturemaps-us-west-2/release/) using DuckDB.
  • Regrid parcels (tx_dallas.parquet) — parcel records for Dallas County including zoning type/subtype, keyed by ll_uuid. Dallas County is available as free sample data from the Regrid Data Store.
  • GERS bridge table (dallas_bridge.parquet) — maps Overture GERS IDs to Regrid ll_uuids, enabling the join between the two datasets.

Requirements

  • Java 21+
  • DuckDB (for downloading Overture data from S3)

Setup

Fetch all dependencies (Planetiler JAR, Overture Places extract, and Regrid parcel data):

./get_dependencies.sh

Generate tiles

java -cp planetiler.jar OvertureProfile.java

This produces dallas.pmtiles.

View the map

Serve the project directory with any static file server and open index.html:

python3 -m http.server