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Serve tiles in coordinate reference systems beyond Web Mercator (EPSG:3857) — most commonly geographic coordinates (EPSG:4326), but also national and polar projections.
Web Mercator is the default across the web mapping stack, but many organisations — cadastral, scientific, polar, and government users — need data delivered in a projection that preserves their measurements. Supporting alternate CRSs would let Martin serve these communities directly instead of forcing a reprojection step upstream.
Scope to define before committing:
- Which CRSs to support first (EPSG:4326 is the most requested)
- How tile pyramids / tiling schemes are defined for non-Mercator projections (ties into OGC API Tiles & STAC tile-matrix-sets)
- Whether reprojection happens on ingest, on the fly, or both