No abstract

This paper reports a new Modelica-based open source project entitled JModelica.org, targeted towards dynamic optimization. The objective of the project is to bridge the gap between the need for high-level description languages and the details of numerical optimization algorithms. JModelica.org is also intended as an extensible platform where algorithm developers, particularly in the academic community, may integrate new and innovative methods. In doing so, researchers gain access to a wealth of industrially relevant optimization problems based on existing Modelica models, while at the same time facilitating industrial use of state of the art algorithms. In this contribution, an overview of the platform is presented and the main features of JModelica.org are highlighted.

When an Integrated Development Environment (IDE) is developed, the support for multiple views of the same document is often essential. An example of this is Modelica models, where it should be possible to view and edit the same model in both its textual and graphical representation.One implementation of Modelica is the open source platform JModelica.org. It contains the Eclipse-based JModelica.org IDE, providing a text editor for Modelica code based on the Eclipse platform.In this paper, we present an implementation of a graphical editor for the JModelica.org IDE. Several challenges arising when implementing a graphical editor for Modelica models are discussed. Amongst others, the difficulties in rendering Modelica diagrams and how to interact with existing frameworks in Eclipse are covered. Also, a method for preserving the formatting of a modified source code file is presented, which is essential when the model is altered in the graphical editor.The presented implementation is compared to other open source software (OSS) implementations of Modelica editors.