R/len.R
len.Rd
len calculates the Euclidean length (also called Euclidean norm) of a vector or the length of each column of a numeric matrix.
len
len(X)
a numeric vector or matrix
a scalar or vector containing the length(s)
norm for more general matrix norms
norm
len(1:3) #> [1] 3.741657 len(matrix(1:9, 3, 3)) #> [1] 3.741657 8.774964 13.928388 # distance between two vectors len(1:3 - c(1,1,1)) #> [1] 2.236068