Getting Started

Working with Matrices

This section introduces you to other ways of creating matrices:

• Generating Matrices
• The load Function
• M-Files
• Concatenation
• Deleting Rows and Columns

Generating Matrices

MATLAB provides four functions that generate basic matrices.

zeros	All zeros
ones	All ones
rand	Uniformly distributed random elements
randn	Normally distributed random elements

Here are some examples.

• Z = zeros(2,4)
  Z =
       0     0     0     0
       0     0     0     0
  
  F = 5*ones(3,3)
  F =
       5     5     5
       5     5     5
       5     5     5
  
  N = fix(10*rand(1,10))
  N =
       4     9     4     4     8     5     2     6     8     0
  
  R = randn(4,4)
  R =
      1.0668    0.2944   -0.6918   -1.4410
      0.0593   -1.3362    0.8580    0.5711
     -0.0956    0.7143    1.2540   -0.3999
     -0.8323    1.6236   -1.5937    0.6900
  

Examples of Expressions

The load Function