The demo sets up a dummy dataset of six items: [ 5.1 3.5 1.4 0.2] [ 5.4 3.9 1.7 0.4] [ 6.4 3.2 4.5 1.5] [ 5.7 2.8 4.5 1.3] [ 7.2 3.6 6.1 2.5] [ 6.9 3.2 5.7 2.3] Each data ... principal component ...