A modular graph transformation rule set for IFC‐to‐CityGML conversion

Conversion of Industry Foundation Classes (IFC) building models into CityGML city is one the operational scenarios for BIM–GIS integration, with a variety applications producing and consuming data on either side. Given in-depth cross-domain knowledge required to specify such conversions, heterogeneity IFC input use cases resulting CityGML, flexible configurable solutions are needed that make conversion details accessible domain specialists. Graph transformation as method fulfils these requirements. We propose extend modularity given by single rules at more coarse-grained level identify four layers modules associated rules. describe self-contained set across demonstrate its application range models.