Chapter 5 Geometric Duality

In chapter Data Matrix we talked about how a data table can be mathematically treated as a data matrix: typically as an array of individuals and variables. In this chapter we take a further step that should let you adopt a geometrical mindset. More specifically, you will learn how to think and look at any data matrix from a geometric standpoint. This is an incredible insightful concept which some authors refer to as the duality of a data matrix.