IfcOpenShell Element Traversal and Querying

Quick Reference

Decision Tree: Finding Elements

Need to find IFC elements?
├── Know the IFC class? (IfcWall, IfcDoor, etc.)
│   └── model.by_type("IfcWall")
│       ├── Need subtypes included? → include_subtypes=True (DEFAULT)
│       └── Need exact type only? → include_subtypes=False
│
├── Know the STEP ID? (#123 in .ifc file)
│   └── model.by_id(123)
│       └── WARNING: STEP IDs are NOT persistent across re-exports
│
├── Know the GlobalId? (22-char IFC GUID)
│   └── model.by_guid("2O2Fr$t4X7Zf8NOew3FLOH")