Linked Views for Visual Exploration

Abstract

The basic problem in visualization still is the physical limitation of the 2-D presentation space of paper and computer screens. There are basically four approaches to addressing this problem and to overcoming the restrictions of two-dimensionality: 1. Create a virtual reality environment or a pseudo-3-D environment by rotation that is capable of portraying higher-dimensional data at least in a 3-D setting. 2. Project high-dimensional data onto a 2-D coordinate system by using a datareductionmethod such as principal component analysis, projection pursuit, multidimensional scaling, or correspondence analysis. 3. Use a nonorthogonal coordinate system such as parallel coordinates which is less restricted by the two-dimensionality of paper. 4. Link low-dimensional displays.