geomorphR: Geometric Features and Footprint Comparison for 'sf' Objects
Extracts reproducible geometric and urban-morphology descriptors from
polygon and multipart polygon building footprints stored as 'sf' objects,
including area, perimeter, compactness, shape, topology, convexity, orientation,
and optional building-height and floor-area metrics. Compares polygon footprints
across periods using the intersection-over-union (Jaccard) index (Jaccard,
1912) <doi:10.1111/j.1469-8137.1912.tb05611.x> to identify new constructions,
potential demolitions, and footprint changes. Supports vector file formats
readable by 'sf', including Shapefiles and GeoPackage (GPKG) vector files with
named layers, optional boundary clipping, and reprojection to a common coordinate
reference system. Returned 'sf' objects preserve source attributes and geometry
for spatial analysis and downstream workflows, with optional parallel processing
using 'future' for larger feature-extraction jobs.
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