A Qualitative Evaluation of a Software Development and Re-Engineering Project

The VizzAnalyzer is a framework for analyses and visualizations of software. It has been developed over years, to a great deal by students and PhD students. In between it has been re-engineered to improve the software quality. In this paper, we publish the results of the software quality measurements over different versions of the VizzAnalyzer framework with well established quality metrics. Some metrics uncover qualities we were aiming at in our re-engineering, e.g. maintainability, some others uncover qualities we were deliberately ignoring or did not even think about, e.g. good "object-orientedness". Our measurements validate our expectation: the former metrics significantly improve over the versions whereas the latter contain positive as well as negative surprises