Programming

Scalars

Any individual real or complex number is represented in MATLAB as a 1-by-1 matrix called a scalar value:

• A = 5;
  
  ndims(A)        % Check number of dimensions in A
  ans =
       2
  
  size(A)         % Check value of row and column dimensions
  ans =
       1     1
  

Use the isscalar function to tell if a variable holds a scalar value:

• isscalar(A)
  ans =
      1
  

The Empty Matrix

Vectors

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