size of objects
sz = size(x) [n1, n2] = size(x) [n1, n2, n3, ...] = size(x) n = size(x, sel)
a 2-D or n-D array of any type or a list
1 by ndims(x)
integer vector.
a positive scalar with integer value or one of the character strings 'r', 'c' or '*'
numbers with integer values
a number with integer value
an array or n-D array (constant, polynomial, string, boolean, rational)
sz = size(x) returns a 1-by-ndims(x) vector. Each entry gives the corresponding dimension value.[n1, n2, ...] = size(x), the function returns in each argument the corresponding dimension value.n = size(x, sel)
may be used to specify what dimension to get:
sel to 1 or 'r' to get the
number of rows.sel to 2 or 'c' to get the
number of columns.sel to m,
where m is a positive integer to get the
mth dimension. If m is
greater than ndims(x), then size(x,m) returns 1.sel to '*' to get the product of
the dimensions.a list; it returns the number of elements. In this case only
y = size(x) syntax can be used.
a linear system; y= size(x) returns in
y the (row) vector [number of outputs, number of
inputs] i.e. the dimension of the corresponding transfer matrix. The
syntax [nr, nc] = size(x) is also valid (with
(nr, nc) = (y(1), y(2))). If x
is a linear system in state-space form, then [nr, nc, nx] =
size(x)
returns in addition the dimension nx of matrix
x.
[n, m] = size(rand(3, 2)) [n, m] = size(['a', 'b'; 'c', 'd']) x = ssrand(3, 2, 4); [ny, nu] = size(x) [ny, nu] = size(ss2tf(x)) [ny, nu, nx] = size(x) // Returns the number of rows n = size(rand(3, 2), "r") // Returns the number of columns m = size(rand(3, 2), "c") // Returns the product of the dimensions nm = size(rand(3, 2), "*") |  |  |