Context Diagram extension for capellambse

This extension of py-capellambse enables generation of views (diagrams) that describe an element context (from a user-defined perspective) and layouting of defined diagrams. This allows systems engineers to do less layouting work and at the same time get diagrams with optimal layouts into the model-derived documents.

The contents of an element context (what elements make it to the context) depend on the element of interest and are selected based on a hand-picked set of rules. However in many cases end user can further customize what and how needs to be in the context view.

The generated views are delivered as SVG images and do not persist in the model itself. This approach enables generation of large number of views at scale (in parallel) in the document production pipeline and also saves quite some XML space in the models. When you rely on generated views for documentation the models can stay lite as they only need to have the engineering / design views (that dont need to have a nice layout).

The layout work is done by elkjs' Layered algorithm.

Generate Context Diagrams from your model data!

When the extension is installed you get additional method .context_diagram available on those model elements that are already covered by context view definitions.

Simple context

Context diagram of Left

Interface context

Interface context diagram of Interface

Have a look at our documentation to get started and see the capabilities of this extension.

Special thanks goes to the developers and maintainers of Eclipse Layout Kernel™.

Licenses

Copyright and license information added and maintained via the reuse tool from Reuse Software.

Copyright DB InfraGO AG, own contributions licensed under Apache 2.0 (see full text in LICENSES/Apache-2.0)

Copyright (c) 2021 Kiel University and others, ELK/Sprotty contributions (elkgraph-json.js & elkgraph-to-sprotty.js) licensed under EPL-2.0

Copyright denoland/deno, the deno runtime used in the distributed assets on releases (deno)(https://deno.com/) licensed under MIT

Dot-files licensed under CC0-1.0 (see full text in LICENSES/CC0-1.0)

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Credits

Author: DB InfraGO AG

GitHub Statistics

Data verified by PyPI on Aug 26, 2026
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License

Apache Software License (Apache-2.0)

Requires

Python <3.15, >=3.11

Tags

capella mbse context diagram automatic diagrams

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