Is there a way to get MATLAB to write out a certain number more than once without typing them individually

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Waseem Hussain 2017-11-6

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关闭： MATLAB Answer Bot 2021-8-20

Hi Is there a way to get MATLAB to write out 20 lots of 1's 20 lots of 2's etc. without typing them out individually

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Rik 2017-11-6

You mean repmat? Or for-loops? (combine it with sprintf or fprintf)

Waseem Hussain 2017-11-6

Sorry I don't know what you mean by that, could you show us an example of how I would do it

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James Tursa 2017-11-6

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编辑：James Tursa 2017-11-6

在 MATLAB Online 中打开

E.g.,

>> ones(1,20)
ans =
  Columns 1 through 18
     1     1     1     1     1     1     1     1     1     1     1     1     1     1     1     1     1     1
  Columns 19 through 20
     1     1
>> ones(1,20)*2
ans =
  Columns 1 through 18
     2     2     2     2     2     2     2     2     2     2     2     2     2     2     2     2     2     2
  Columns 19 through 20
     2     2

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James Tursa 2017-11-6

在 MATLAB Online 中打开

E.g.,

W = [ones(1,20);2*ones(1,20)];

W = ones(2,20);
W(2,:) = 2;

Or if you want columns of numbers, e.g.

W = [ones(20,1),2*ones(20,1)];

W = ones(20,2);
W(:,2) = 2;

Rik 2017-11-6

It sounds like you would really benefit from a starter course on Matlab. Assigning and concatenating variables is probably in the first lesson of every tutorial.

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