crosstech-impl-qgis-bim-georef

Quick Reference

Integration Approaches

Critical Warnings

NEVER use GDAL/OGR to read IFC files directly into QGIS — GDAL does NOT have a native IFC driver as of GDAL 3.9. The URL https://gdal.org/en/stable/drivers/vector/ifc.html returns 404.

NEVER import IFC geometry into QGIS without first checking for IfcMapConversion — models without georeferencing land at (0,0) in whatever CRS is assumed.

NEVER use Shapefile format for BIM-to-GIS export — Shapefiles drop Z values and limit field names to 10 characters. ALWAYS use GeoPackage.