Table 1 A comparison of CityGML, IFC and LandInfra
From: The LandInfra standard and its role in solving the BIM-GIS quagmire
# | Criterion | CityGML | LandInfra | IFC |
|---|---|---|---|---|
1 | Body | OGC | OGC | buildingSMART |
2 | Version | 2.0.0 | 1.0.0 | IFC4 Addendum 2 |
3 | Users | 3D city modellers | Survey engineers & BIM | BIM & AEC (Architecture, Engineering & Construction) |
4 | Encoding | GML | GML | Mainly STEP (Standard for the Exchange of Product model data) |
5 | Focus | City objects | Land and infrastructure | BIM models |
6 | Geometry | Subset of ISO 19107 / GML 3.1.1 | ISO 19107 + more | ISO 10303 |
7 | Topology | Shared surfaces only | Between facility parts | Openings, coverings and other connections |
8 | Semantics | Detailed | Not so detailed | Detailed |
9 | Metadata | Basic | ISO 19115 compliant | Extensively but inconsistently used |
10 | LODs | 5 different LODs | Not supported | Not supported |
11 | Extensions | Generics or ADEs | Not supported | Supported |
12 | Appearance | Supported | Not supported | Supported |
13 | Software support | Low | Almost nonexistent | Medium |
14 | Codelists | Supported with ISO 19103 | Supported with ISO 19103 | Enumerations only |
15 | Land use | Simple types | Complex LADM types [26] | Not relevant |
16 | File size | Large [35] | Large | Very large |