ESM1: Tabulated clearance envelopes (CIN/GLI/GNI) and 2D cross-sections for depot-scale railway clearance verification

This record provides the data package supporting the manuscript “Scan-to-decision workflow for clearance verification in light-rail depots: deriving obstacle-installation gauges from track tolerances”. The package contains (i) tabulated 2D perimeter points of the CIN, GLI, and GNI envelopes as a function of curvature radius and turn direction; (ii) representative transverse cross-sections extracted from terrestrial laser scanning (TLS) point clouds (including COMPLIANT, INTERMEDIATE and FULL examples); (iii) an obstacle-point subset with obstacle identifiers and families for obstacle-level clearance checking; and (iv) derived outputs (CSV manifests and plots) that reproduce the reported clearance classifications and figures. Coordinate convention: X is lateral (positive to the right in the direction of travel); Y is vertical with Y=0 at the GLI reference point; all units are meters. Contents: envelopes/: CIN/GLI/GNI tabulations (Excel + long-form CSV export) sections/: cross-sections (X,Y) with PK, radius and turn metadata obstacles/: obstacle-point subset with obstacle_id, family, PK and (X,Y) points derived/: signed-distance minima and FULL/INTERMEDIATE/COMPLIANT classification manifests, plus overlay plots How to reproduce: Use the companion reference implementation (ESM2) to recompute signed-distance minima and regenerate plots/CSVs from this dataset.