Graphics Reference
In-Depth Information
Figure 13-2. Correlation matrix with colored squares and black, rotated labels
It may also be helpful to display labels representing the correlation coefficient on each square
in the matrix. In this example we'll make a lighter palette so that the text is readable, and we'll
remove the color legend, since it's redundant. We'll also order the items so that correlated items
are closer together, using the
order="AOE"
(angular order of eigenvectors) option. The result is
shown in
Figure 13-3
:
