Here are some places where you can look for information about Principal Components Analysis of Scalar, Vector, and Mesh Vertex Data:

Trackers
  1. Bugs: Bug Tracking System
  2. Support: Tech Support Tracking System
  3. Patches: Patch Tracking System
  4. Feature Requests: Feature Request Tracking System
Wiki
Principal Components Analysis of Scalar, Vector, and Mesh Vertex Data has a wiki that can be found here.