select points in a plot with the mouse

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Luca Tognetti
Luca Tognetti 2023-1-9
评论： Luca Tognetti 2023-1-9
Hi! this is my app in app designer. I'm new in matlab and app designer.
the main features that my app does is to load an image file (a plot) by clicking on "Load IMAGE". the selected plot will appear in the plot area in the middle of the UI. Then, after clicking on "Axes Calibration" I would like to select some points in the plot with the mouse and store the [x,y] value of the selected points.
How can I write the function that stores the value of the clicked points??
thank you in advance

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回答（1 个）

Cameron
Cameron 2023-1-9
编辑：Cameron 2023-1-9
Are you using a UIAxes to show your image? If so, you can do something like this:
function UIAxesButtonDown(app, event)
C = get (app.UIAxes,'CurrentPoint');
XValue = C(1,1);
YValue = C(1,2);
end
And from there you should be able tovcalibrate the points from your graph and the image.
  1 个评论
Luca Tognetti
Luca Tognetti 2023-1-9
thanks for the reply, yes I'm using UIAxes.
Anyway this function doesn't work. When I try to print the x and y value nothing come out

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