. . . . . . "Analysis of Sphere vs WGS84 Ellipsoid Impact on HEALPix Cell Assignment" . . . . " - The original paper uses H3 (sphere-only) and does not consider ellipsoid effects -- this is a novel extension\n - Analysis uses synthetic raster grids, not real Sentinel/Copernicus data \n - Four latitude bands chosen to represent typical European EO coverage" . . "For each region, a 50x50 pixel raster grid is indexed to HEALPix depth 9 cells twice -- once with ellipsoid='sphere' and once with ellipsoid='WGS84' -- using healpix_geo.nested.lonlat_to_healpix(). Cell assignment differences are quantified as percentage of pixels in a different cell. Polygon coverage similarity is measured via Jaccard index using healpix_geo.nested.polygon_coverage(). Environment: Python 3.11, healpix-geo 0.1.1, Docker containerized, seeded RNG (seed=42)." . "Extends the replication of Law & Ardo (2024) by comparing HEALPix cell assignments using sphere-based vs WGS84 ellipsoid-based indexing via healpix-geo. Measures the percentage of raster pixels assigned to different cells depending on the reference surface, across four latitude bands: equatorial (0°), mid-latitude (+48°), high-latitude (+62°), and arctic (+78°)." . . . " Anne Fouilloux" . "2026-04-09T20:56:50.129Z"^^ . . . . . . "NP created using Declaring a replication study design according to FORRT" . . "RSA" . "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" . "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" . . .