Columnwise normalization of a matrix
Computation of a columnwise normalized version of a matrix.
nrm2(A)
A | 
 Matrix of any order  | 
N | 
 Matrix columnwise normalized  | 
Maria Antonietta Del Ferraro mariaantonietta.delferraro@yahoo.it 
 Henk A.L. Kiers h.a.l.kiers@rug.nl 
 Paolo Giordani paolo.giordani@uniroma1.it
X <- matrix(rnorm(6*3),ncol=3) Y <- nrm2(X) apply(Y^2, 2, sum)
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