Spatial Non-Stationarity in Urban Morphology–Performance Relationships: An Empirical Assessment of the Structural Saturation Pattern in Riyadh

This appendix documents the analytical sample of 126 districts within Riyadh Municipality boundaries. The complete list includes the following metadata fields for each district: · District identifier (anonymized alphanumeric code) · District name (Arabic and English transliteration) · Morphological type assignment (Type 1: Compact Saturated Cores; Type 2: Transitional Expanding Fabrics; Type 3: Peripheral Under-Served Developments) · Centroid coordinates (latitude and longitude in WGS 84) · Population (2022 estimates from RCRC Open Data Portal) · Housing units · Built-up area (hectares) · Distance to city center (km, network distance) · Morphological measures (18 variables) · Performance indicators (accessibility, vitality, LST)