How to specify an x-range for a yline?

In the documentation link: https://se.mathworks.com/help/matlab/ref/yline.html#mw_fe7a36af-ea48-44bc-8536-26d21d107674

we have the following code;

x = -2:0.25:2;
[X,Y] = meshgrid(x);
Z = X.*exp(-X.^2-Y.^2);
contour(X,Y,Z,30)

yl = yline(0,'--','y = 0','LineWidth',3);

It returns the following graph:

How to specify a range for the line? for example if i want to see the line only between x=-1 to x=1?

Answer 1

[Walter Roberson]

You cannot do that with yline() . You need to line() or plot() the line into place, and text() the label into place.

[Harr]

Dear Walter,

Thank you for your answer!

I tried with the following code but instead of a horizontal line if gave a vertical line! How to fix it, any suggestions?

x = -2:0.25:2;
[X,Y] = meshgrid(x);
Z = X.*exp(-X.^2-Y.^2);
contour(X,Y,Z,30)
y = 1; 
x1 = -1;                      
x2 = 1;
hold(gca,'on')
plot([y; y], [x1; x2], 'LineWidth',3)
cls

Best regards

/Hedi

[Walter Roberson]

plot([x1; x2], [y; y], 'LineWidth',3)

[Harr]

Thankl you very much ^_^