When Seattle Was Built — Construction Era Map [OC]

Tools Python · geopandas · pandas · matplotlib · PIL/Pillow. No proprietary software, no paid data. Colors Custom 11-step sequential palette running warm-to-cool across the construction era range — dark brick red for pre-1900, amber for the Craftsman peak, yellow-green for postwar, teal through blue for late 20th century and contemporary. Output Rendered at 300 DPI, 20×25 inches. [...]