¹Department of Computer Sciences, Information Visualization Research Group at TAUCHI,^† University of Tampere, Finland

Correspondence: Harri Siirtola, TAUCHI, Department of Computer Sciences, FIN-33014 University of Tampere, Finland. Tel: +358 3 215 6066; Fax: +358 3 215 6070; E-mail: harri.siirtola@cs.uta.fi

Received 10 February 2004; Revised 13 August 2004; Accepted 28 September 2004; Published online 3 February 2005.

Abstract

We consider the backgrounds, applications, implementations, and user interfaces of the reorderable matrix originally introduced by Jacques Bertin. As a new tool for handling the matrix, we propose a new kind of interface for interactive cluster analysis. As the main tool to order the rows and columns, we use the well-known barycenter heuristic. Two user tests are performed to verify the usefulness of the automatic tools.