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Basemap reference data v1

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@MAfarrag MAfarrag released this 07 Jun 17:16
· 65 commits to main since this release
ff99c6e

Reference cartographic data backing cleopatra.reference (add_features / add_relief). These are fixed public datasets re-hosted as dependency-light artifacts so the package needs no GDAL/geopandas at runtime.

Natural Earth vectors — gzipped GeoJSON, 6 layers (coastline, land, ocean, rivers, lakes, borders) x 3 resolutions (110m, 50m, 10m). Source: Natural Earth (naturalearthdata.com), public domain; coordinates simplified/quantized per resolution.

Hypsometric relief — global EPSG:4326 RGB PNG, low (720x360) and medium (1440x720). Derived from the Natural Earth cross-blended hypsometric tints.

Asset names match exactly what cleopatra.reference fetches and cache; do not rename.