Euclidean norm

Symbolic Euclidean norm operation for LazyTensor objects.

Usage

norm2(x)

Arguments

x

a LazyTensor, a ComplexLazyTensor, a vector of numeric values, or a scalar value.

Value

An object of class LazyTensor.

Details

norm2(x) returns a LazyTensor that encodes, symbolically, the Euclidean norm of x, same as sqrt(x|x).

See also

|.LazyTensor(), sqrt()

Author

Chloe Serre-Combe, Amelie Vernay

Examples

if (FALSE) {
x <- matrix(runif(150 * 3), 150, 3) # arbitrary R matrix, 150 rows, 3 columns
x_i <- LazyTensor(x, index = 'i')   # creating LazyTensor from matrix x, 
                                    # indexed by 'i'
N_x <- norm2(x_i)                   # symbolic matrix, 150 rows and 3 columns
}