MATLAB: Get line plot data just by mouse stay on it (without click)

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I plot my data and I need to show data (Y) in text box when I put the mouse cursor on it (without click), is there any fuction that help me?

Best Answer

Here is a simple example that outlines how to do it using HITTEST.
function my_example
plot(rand(5));
set(gcf,'windowbuttonmotionfcn',@getcoords)
function getcoords(varargin)
this = hittest;
if strcmp(get(this,'type'),'line');
    cp = get(gca,'currentpoint');
    ht = title(num2str(cp([1 3])));
    set(ht,'color',get(this,'color'));
end
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