# Changes and Bug Fixes in Version 4 2

From Eigenvector Documentation Wiki

#### NEW FUNCTIONS AND FILES

- alignpeaks - Calibrates wavelength scale using standard peaks.
- alignspectra - Calibrates wavelength scale using standard spectrum.
- cls - Classical Least Squares regression for multivariate Y.
- corrspec - Resolves correlation spectroscopy maps.
- dispmat - Calculates the dispersion matrix of two spectral data sets.
- manrotate - Graphical interface to manually rotate model loadings.
- modelcache - Stores and retrieves models in the model cache.

(Sub topic of Getting_Started_Documentation_and_Help)