Select points in a plot

Question

Luca Tognetti 2023-1-10

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1891335-select-points-in-a-plot

编辑： Mario Malic 2023-1-10

采纳的回答： Mario Malic

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Hi, I'm using the app designer and i want to select some points from a plot.

in the UIAxesButtonDown function I'm using this notation to "capture" the mouse position:

C = get (app.UIAxes,'CurrentPoint');
app.UITable.Data = C(1,1:2);

the problem is that I don't know how to store the X and Y values of the point I just clicked, because if I click again on the plot it will overwrite the previous point.

Thanks

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Answer 1

Mario Malic 2023-1-10

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https://ww2.mathworks.cn/matlabcentral/answers/1891335-select-points-in-a-plot#answer_1145610

编辑：Mario Malic 2023-1-10

在 MATLAB Online 中打开

Hello,

It would be the best if you put data tips on the points you want to select then you can get them with these lines

dataTips = findall(fig, 'type', 'datatip'); % where the fig is your figure handle 
pointCoords = cell2mat([get(dataTips, 'X'), get(dataTips, 'Y'), get(dataTips, 'Z')]);