Select a line object using the mouse

2011 3 14
2 个回答
3 次查看（30 天）

0 个投票

Is there a way to allow the user to select a line object using the mouse and return the handle to the line?

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回答（2 个）

Oleg Komarov
Oleg Komarov 2011-3-14

0 个投票

Yes, use the ButtonDownFcn to set a function which retrieves the value of the handle and throws it into the workspace with evalin or putvar (on FEX)
Oleg
Matt Fig
Matt Fig 2011-3-14

0 个投票

If you are looking for a quick and dirty way to get the handle from a click, you can do this:
x = 0:.001:1;
L = plot(x,x.^2,x,x.^3,x,x.^4);
set(L,'ButtonDownFcn','Handle = gcbo'); % Now click on a line...
Now if you want to be able to select multiple objects and have the handles stored, or perform manipulations on the lines, you will have to get more sophisticated and do something like what Oleg recommends.

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