Create array with same number

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Fadal Sasse
Fadal Sasse 2017-8-10
回答： Drue 2023-2-22
I have this command z=ones(length(x),1) If I want to change (ones) with 2 or 3 what I should do?

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James Tursa
James Tursa 2018-9-14
编辑：James Tursa 2018-9-14
See this link for a discussion of various methods to do this:
https://www.mathworks.com/matlabcentral/answers/51411-initialize-a-mxn-matrix-with-the-same-number
The fastest method seems to be
z = zeros(length(x),1) + 2;

更多回答（2 个）

José-Luis
José-Luis 2017-8-10
twos = 2.* ones(length(x),1)
Drue
Drue 2023-2-22
To create arrays with the same number I'd personally just set a variable and put it in the linspace function
x = 3
poof = input('how many columns of this number do you want?')
linspace(x,x,poof)

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