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ELK - Diagram Layouting in Capella

Warning

The extension is currently not publicly available. To find out if the extension is available in your environment, contact your system administrator.

We have integrated the ELK Layered algorithm to enhance the native layouting capabilities of Capella. While no user-facing configuration is currently exposed, we provide sensible defaults, for example the layout direction is set to left-to-right.

⚠️ Note: This layouting feature is not compatible with advanced diagram types such as Sequence, Activity, or State Machine diagrams.

How to Use

You can trigger the layout algorithm using the ELK layout button located in the diagram control bar:

ELK layout button

Layout Optimization

For optimal results disable the following options in the diagram’s properties:

  • Snap to grid
  • Snap to shapes

These settings can be found in the diagram’s properties panel:

ELK properties

To make this the default behavior navigate to: Window > Preferences > Sirius > Sirius Diagram > Rulers And Grid and uncheck the respective snapping options:

Sirius diagram preferences