Introduction

XmdvTool allows users to examine data sets with a large number of dimensions or parameters.  We refer to this as multivariate data.  4 distinct methods of projecting this N-dimensional data onto a 2-D screen are provided: scatterplots, glyphs, parallel coordinates, and dimensional stacking.  Users can switch between display techniques by simply clicking on buttons in the interface.  A major tool in XmdvTool for providing insights into N-D spatial relations is the N-D brush, which allows users to perform operations on the data points which fall within a user-specified N-D subspace of the total space defined by the data.