csppstrtrem

Removes structure in a plane that was found using projection pursuit.

Input Arguments:

The input arguments are

• The input matrix Z is an n x p matrix of spherized observations (mean zero, covariance equal to the identity matrix).
• alpha and beta are vectors the span the projection plane. This plane has the structure that one wants to remove. This plane is usually found using projection pursuit EDA.

Output Arguments:

The output matrix X is the data with the structure removed.

Synopsis

X = csppstrtrem(Z,alpha,beta)

References:

Friedman, J. and John Tukey. 1974. “A projection pursuit algorithm for exploratory data analysis,” IEEE Transactions on Computers, 23:881-889.