SIZE Size of a Variable

Section: Inspection Functions

Usage

Returns the size of a variable. There are two syntaxes for its use. The first syntax returns the size of the array as a vector of integers, one integer for each dimension 
  [d1,d2,...,dn] = size(x)

The other format returns the size of x along a particular dimension: 

  d = size(x,n)

where n is the dimension along which to return the size.

Example

--> a = randn(23,12,5);
--> size(a)

ans = 
 23 12  5

Here is an example of the second form of size. 

--> size(a,2)

ans = 
 12