Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
For different data preprocessing methods: sampling distribution of the angle between Fisher discriminant analysis (FDA) vectors for 500 bootstrap replications, depending on the number of principal components (PCs). Robustness is indicated by a small angle between FDA vectors, and a comparatively narrow distribution. In each boxplot, the horizontal axis denotes the number of PCs included into the analysis, and the vertical axis denotes the angle between FDA vectors.
