Add Bulawayo suburb boundary generation scripts#71
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roy-bme merged 1 commit intoMay 11, 2026
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…lygons - Fetch all 35 zones from Supabase and identify non-suburb zones (CBD Core, CBD/Sauce Town, etc.) - Create rectangular polygon boundaries for 30 standard suburbs based on their coordinates - Skip 5 non-suburb zones (commercial/transit areas) to keep placeholders - Apply migration to update boundary_geojson column in zones table - Include Python scripts for boundary generation (for future refinement) Zone boundaries now more accurately represent actual suburb areas on the Indaba map. https://claude.ai/code/session_013TGgkurXskHqWinMTnTLKS
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Summary
Add Python scripts to generate and manage GeoJSON boundary polygons for Bulawayo suburbs. These scripts provide multiple approaches to populate zone boundaries in the database, from realistic hardcoded coordinates to external API integrations.
Key Changes
create_bulawayo_boundaries.py: Main script that generates realistic GeoJSON polygon boundaries for 28 Bulawayo suburbs based on known geographic coordinates. Each suburb is defined by corner coordinates (SW, SE, NE, NW) that create rectangular boundary polygons. Generates SQL UPDATE statements for the zones table.
create_zone_boundaries.py: Alternative approach that creates approximate rectangular polygons around center coordinates for all zones. Provides a simpler fallback method when precise boundaries aren't available.
update_zone_boundaries.py: Integration script that queries the Nominatim/OpenStreetMap API to fetch real boundary data for suburbs. Includes rate limiting and error handling for API requests.
fetch_boundaries_overpass.py: Experimental script for querying the Overpass API as an alternative data source for suburb boundaries.
zone_updates.sql: Generated SQL file containing UPDATE statements to populate the
boundary_geojsoncolumn in the zones table with polygon geometries.Implementation Details
https://claude.ai/code/session_013TGgkurXskHqWinMTnTLKS