Symbolic Math Toolbox

size

Symbolic matrix dimensions

Syntax

• d = size(A)
  [m,n] = size(A)
  d= size(A, n)
  

Description

Suppose A is an m-by-n symbolic or numeric matrix. The statement
d = size(A) returns a numeric vector with two integer components, d = [m,n].

The multiple assignment statement [m,n] = size(A) returns the two integers in two separate variables.

The statement d = size(A,n) returns the length of the dimension specified by the scalar n. For example, size(A,1) is the number of rows of A and size(A,2) is the number of columns of A.

Examples

The statements

• syms a b c d
  A = [a b c ; a b d; d c b; c b a];
  d = size(A)
  r = size(A, 2)
  
  

return

• d =
       4     3
  
  r =
       3
  

See Also

length, ndims in the online MATLAB Function Reference

sinint

solve