02Geo3D - 3D Terrain and Building Analyzer
3D terrain and building analysis with results back in QGIS: sun and shadow, daylight and BRE 209 checks, solar PV, wind, UTCI and PET comfort, noise, flooding, cut and fill and height optimisation.
02Geo3D turns a DEM and your building, wall, tree and pole layers into an interactive 3D scene in three steps (terrain, objects, open in 3D), runs environmental analyses on the GPU in the browser, and returns every result to QGIS as styled GeoTIFF and GeoPackage layers.
THREE-STEP WORKFLOW: Build the ground mesh from a DEM, extrude objects from height fields or expressions while keeping their QGIS symbology, and open the scene with one click.
SUN AND DAYLIGHT: Sun hours, shadow casting for any date and time, sky view factor, facade daylight as Vertical Sky Component under a CIE overcast sky, annual solar irradiation, and rooftop and facade PV yield.
MICROCLIMATE AND THERMAL COMFORT: Surface energy balance with Bowen-ratio partitioning, ground surface temperature, evapotranspiration cooling from tree canopies, Physiological Equivalent Temperature (PET) and UTCI heat stress, 24-hour diurnal studies, seasonal outdoor comfort from EnergyPlus EPW/TMYx weather files, and interactive tree planting to test the effect of new canopy.
VENTILATION, AIR AND NOISE: Street-canyon ventilation efficiency, normalised air age, traffic NO2 and PM2.5 dispersion with filtration by trees, pedestrian wind screening with animated streamlines, and 3D noise propagation based on ISO 9613-2 with quiet-facade detection.
URBAN FORM AND CLIMATE: Panoramic pedestrian Green View Index, Knowles and BRE 3D solar envelopes with height limits and floor capacity, heat-island morphology and approximate Local Climate Zones.
TERRAIN AND WATER: Slope, aspect, hillshade, curvature, topographic position (TPI), ruggedness (TRI), topographic wetness (TWI), dynamic cross-sections, flood inundation, and cut-and-fill earthwork volumes.
PLANNING CHECKS AND OPTIMISATION: BRE 209 daylight and sunlight compliance checks with shareable threshold profiles, side-by-side A/B scenario comparison, and multi-objective NSGA-II building-height optimisation.
PRESENTATION AND EXPORT: Up to eight synchronised view panels, 8K captures, PDF documentation sheets, GLB models, MP4 video and standalone offline HTML packages.
The scene runs on a local server at 127.0.0.1; your data stays on your computer. QGIS 3.28 to QGIS 4.
Manual: https://geophilo.com/zero2geospatial3d/