The use of brushing and rotation for data analysis.

Brushing and rotation are two dynamic graphical methods for studying multidimensional data. We implemented the methods on a high-performance graphics workstation to study their properties by using them in the analysis of a large number of data sets. In this memo we describe: (1) features of the methods that we have found useful during data analysis; (2) data analytic tasks for which each method has particular strengths. The workstation used in the implementation is a Silicon Graphics IRIS-2400T; the code for the brushing and rotation operations can be obtained from the authors.