The 2-norm of an expression.

Norm2(x, axis = NA_real_, keepdims = FALSE)

## Arguments

x

An Expression object.

axis

(Optional) The dimension across which to apply the function: 1 indicates rows, 2 indicates columns, and NA indicates rows and columns. The default is NA.

keepdims

(Optional) Should dimensions be maintained when applying the atom along an axis? If FALSE, result will be collapsed into an $$n x 1$$ column vector. The default is FALSE.

## Value

Returns the 2-norm of x.