How to use xline?

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.

Answer 1

[Steven Lord]

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.)

[Tomasz Cudejko]

@Steven Lord Thanks Steven, that explain my issues

Answer 2

[vishweshwar samba]

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');

Answer 3

[Abderrahim. B]

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