how to calculate the Euclidean norm of a vector in R?

Question

I tried norm, but I think it gives the wrong result. (the norm of c(1, 2, 3) is sqrt(1*1+2*2+3*3), but it returns 6..

Answer 1

Create your matrix as column vise using cbind then the norm function works well with Frobenius norm (the Euclidean norm) as an argument.

x1<-cbind(1:3)

norm(x1,"f")

[1] 3.741657

sqrt(1*1+2*2+3*3)

[1] 3.741657