How to build a row vector with a loop?

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Karen Smith 2022-7-28

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1770010-how-to-build-a-row-vector-with-a-loop

评论： Voss 2022-7-29

Hello everyone, I am a beginner to matlab and I need help trying to build a row vector on matlab. I have a variable NL that is changed manually each time, but I need y0 to match in this fashion.

For example, if NL=2, y0= [1 0]. y0 should be the length of NL, but the first element should be a 1.

Here is another example, if NL=4, y0= [1 0 0 0].

I would like to be able to do this with a for loop for an arbitrary value of NL, here is my code so far.

Can anyone help me with this please?

Thank you.

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dpb 2022-7-29

在 MATLAB Online 中打开

Yes. Which can also be reversed in sequence of course --

NL = 8;
y0(NL) = 0;
y0(1) = 1;

Voss 2022-7-29

在 MATLAB Online 中打开

Yes. Or vectorized --

NL = 8;
y0([1 NL]) = [1 0];
y0
y0 = 1×8
     1     0     0     0     0     0     0     0
clear y0
y0([NL 1]) = [0 1];
y0
y0 = 1×8
     1     0     0     0     0     0     0     0