Scene Coordinate System

The Scene Coordinate System defines your scene's reference coordinate system for georeferenced data import, export and HUD information.

Default Scene Coordinate System

A CityEngine scene can have a Scene Coordinate System (SCS) set. By default the SCS is set to CityEngine CS, the default CityEngine coordinate system.


A new CityEngine scene in default Coordinate System CityEngine CS [meters]

Setting the Scene Coordinate System

When working with georeferenced data, it is often important that your scene has a valid georeferenced coordinate system set. There are three ways to set your scene's coordinate system:

  1. Setting a Coordinate System when Georeferenced Data is added to the scene.
  2. Setting a Coordinate System when creating a new scene.
  3. Changing the Scene Coordinate System in the preferences.

1. Setting a Coordinate System when georeferenced data is added to the scene

As soon as georeferenced data is imported into a CityEngine scene, a Scene Coordinate System is required to locate it correclty. CityEngine automatically pops up the Scene Coordinate System Dialog on your first import of georeferenced data. Taking the data that is going to be imported into account, the dialog suggests a matching scene coordinate system.

2. Setting a Coordinate System when creating a new scene

When creating a new CityEngine scene, you have the option to set your Scene Coordinate System in the new scene wizard. The Scene Coordinate System Dialog appears when you hit Choose...


Setting a Scene Coordinate System when creating a new CityEngine scene

3. Changing the Scene Coordinate System in the preferences

The Scene Coordinate System can be set or changed in the CityEngine preferences Edit → Preferences → Scene. Hit the Scene coordinate system button to launch the Scene Coordinate System Dialog

When changing the Scene Coordinate System, no reprojection is applied to the content of the scene. Using this option only changes the scene's reference system, used for viewing coordinates as well as for future data imports.

Please note that CityEngine currently does not support Datum-Transformations. Thus, please project / reproject your data to match the target SCS before importing into a CityEngine scene.


Scene Coordinate System Preferences

Once a Scene Coordinate System is set, it is displayed in the status line. Also, the information in the headup display of a 3D viewport changes according to the Scene Coordinate System.


The Scene Coordinate System displayed in the 3D viewport HUD and the status line

In CityEngine the Scene Coordinate System can only be a projected coordinate system (no geografic coordinate systems).

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