CityJSON

This community standard is a data exchange format for digital 3D models of cities and landscapes. The JSON-based encoding of CityJSON implements a subset of the CityGML data model (version 3.0) and includes a JSON-specific extension mechanism. Using JSON instead of GML allows us to compress files by a factor 6 and at the same time to simplify greatly the structure of the files.

Documents

(Hover over Type for full description)
Document title Version OGC Doc No. Type
CityJSON Community Standard 2.0 2.0.0 20-072r5 CS

Official model files and encoding schemas

Submit a Change Request, Requirement, or Comment for this OGC standard.

Related links

(Hover over Type for full description)
Document title Version OGC Doc No. Type

Overview

CityJSON is a data exchange format for digital 3D models of cities and landscapes. It aims at being easy-to-use (for reading, processing, and creating datasets), and it was designed with programmers in mind, so that tools and APIs supporting it can be quickly built. The JSON-based encoding of CityJSON implements a subset of the OGC CityGML data model (version 3.0) and includes a JSON-specific extension mechanism. Using JSON instead of GML allows us to compress files by a factor 6 and at the same time to simplify greatly the structure of the files.