How to draw multiple constant lines?

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I want to draw multiple constant lines in a figure. I coded below using xline() and yline() refering Vertical line with constant x-value - MATLAB xline (mathworks.com). But it doesn't work. Would you tell me what is wrong?
xline([1,2,3]);

Accepted Answer

Cris LaPierre
Cris LaPierre on 29 May 2021
Could you provide more details about what you mean by 'it didn't work'?
xline([1,2,3]);
xlim([0 5])

More Answers (1)

Yasuyuki Hamanaka
Yasuyuki Hamanaka on 29 May 2021
Edited: Yasuyuki Hamanaka on 29 May 2021
When I code like this
clear;
xline([1,2,3]);
error happen.
Error using xline (line 29)
Passing multiple values to ConstantLine is not supported.
Error in test (line 2)
xline([1,2,3]);
I am using R2020b now. Should I install R2021a?
  3 Comments
Katherine Zheng
Katherine Zheng on 24 Feb 2022
I am using R2021a, but still have this issue. ?

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