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aberration2()

Usage:
aberration2(basis), REAL matrix basis of alias generators



Keywords: aliasing, design, factorial
aberration2(basis) computes the aberration for the fractioned
two series design indicated by the basis matrix.  The basis matrix
should have elements 0 and 1 (or -1).  The aberration is 
returned as a vector of counts giving the number of aliases
of length j, for j up to the number of columns in basis.


Gary Oehlert 2006-01-30