Explora: A Visualisation Tool for Metric Analysis of Software Corpora

Merino del Campo, Leonel Alejandro; Lungu, Mircea; Nierstrasz, Oscar Marius (2015). Explora: A Visualisation Tool for Metric Analysis of Software Corpora. In: VISSOFT'15: Proceedings of the 3rd IEEE Working Conference on Software Visualization (pp. 195-199). IEEE 10.1109/VISSOFT.2015.7332436

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When analysing software metrics, users find that visualisation tools lack support for (1) the detection of patterns within metrics; and (2) enabling analysis of software corpora. In this paper we present Explora, a visualisation tool designed for the simultaneous analysis of multiple metrics of systems in software corpora. Explora incorporates a novel lightweight visualisation technique called PolyGrid that promotes the detection of graphical patterns. We present an example where we analyse the relation of subtype polymorphism with inheritance and invocation in corpora of Smalltalk and Java systems and find that (1) subtype polymorphism is more likely to be found in large hierarchies; (2) as class hierarchies grow horizontally, they also do so vertically; and (3) in polymorphic hierarchies the length of the name of the classes is orthogonal to the cardinality of the call sites.

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