MATLAB: What does x= [ones(1,2) 2 ones(1,1) 2 ones(1,2) 1] do

arrayMATLAB

please explain the X= [ones(1,2) 2 ones(1,1) 2 ones(1,2) 1];
line of code. I understand that it is creating 1 by 2 array of ones. But what is the significance of 2 ones(1,1) and so on.

Best Answer

It depends on the requirement of what array you want. If you see that line generates: 
[1     1     2     1     2     1     1     1]
The array has 2 in 3rd, 4th position. So 2 is used. The same can also be generated using: 
 X = ones(1,8) ;
 X([3 5]) = 2
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