Please add principal components "trend line"
Submitted by Luke Hutchison
Please can you add an additional trend line type that shows the principal components of a 2D series, using a longer and shorter line to represent the eigenvectors corresponding to the first and second eigenvalues respectively? (Also, the position of the centroid and the equation of the principal axis through the centroid would need to be accessible in the normal way by adding an equation to the trendline.) There are a lot of applications for this, I would use it all the time. Thanks!