How to specify an x-range for a yline?

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Harr 2021-3-22

评论： Harr 2021-3-22

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?

Walter Roberson 2021-3-22

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

Walter Roberson 2021-3-22

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

Harr 2021-3-22

Thankl you very much ^_^

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