VLEN
Syntax: |
vector = VLEN(vector)
|
The VLEN
function accepts either a vector or a
matrix as argument. It returns the length of each dimension of the argument. If the
argument is a vector, the result is a vector of length one (1). If the argument is a
matrix, the result is a vector of length two (2), with the first element
being the number of rows and the second the number of columns.
Examples
Suppose X
is a vector of length 10 and M
is a matrix with
5 rows and 12 columns.
A = VLEN(X) ! number of elements of vector X
B = VLEN(M)
NR = VLEN(M)[1] ! number of rows of matrix M
NC = VLEN(M)[2] ! number of columns of matrix M
makes vectors A
and B
with A = {10}
and
B = {5;12}
and scalars NR
and NC
. Note that A
is a vector of length one (1).