How to use xline?

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Tomaszzz
Tomaszzz on 18 Jul 2022
Commented: Tomasz Cudejko on 18 Jul 2022
Hi all,
I have a signal (attached) over which I would like to plot mutiple vertical lines using x values (see image below)
x = [1648;2871;4022;6216;7327;8416]
My approach below:
can you help please?
load 'signal'
figure;
plot(cop_x_l); hold on
xline([x], repmat(ylim',1,size(x,2)), '--r')
Error using xline (line 29)
Passing multiple values to ConstantLine is not supported.

Accepted Answer

Steven Lord
Steven Lord on 18 Jul 2022
The ability to create multiple vertical or horizontal lines by passing a vector of values into the xline or yline functions was introduced in release R2021a. For earlier releases you'll need to call xline or yline once per value (perhaps in a for loop.)
  1 Comment
Tomasz Cudejko
Tomasz Cudejko on 18 Jul 2022
@Steven Lord Thanks Steven, that explain my issues

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More Answers (2)

vishweshwar samba
vishweshwar samba on 18 Jul 2022
Try this
x = [1,2,3,4,5]; % x interval
% load signal instead of data below
z = linspace(0,6,100);
y = exp(z);
plot(z,y);
xline(x,'-r');

Issa
Issa on 18 Jul 2022
Edited: Issa on 18 Jul 2022
Hi!
Try this
sig = rand(1,10000) ;
x = [1648 2871 4022 6216 7327 8416] ;
figure
plot(sig);
hold on
xline(x, '--r')
Hope this helps

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