存储图形窗口中单击的数据点的坐标

Question

In MATLAB, I can select a data point using the Data Cursor tool and it will display the X and Y of that point ( see figure below ).

Is it possible to wait for the user to click a point then store the X coordinate (or index) of this point to a variable within my code? It doesn't necessarily have to be using the Data Cursor tool, I just need a way to store the clicked point.

Answer 1

I was able to solve this using the function datacursormode documented through MathWorks here: I should have done some deeper digging.

Here is what I did:

dcmObject = datacursormode;
pause
datacursormode off
cursor = getCursorInfo(dcmObject);
x = cursor.Position(1)

The code turns on Data Cursor, waits for the user to select a point and then stores the position of the cursor.

Answer 2

You can get the coordinates from a rendered image or plot via:

msgbox('Click on the plot')
[x y] = ginput(1)

%%%%%%%%%%%%%%
x is the x coordinate of the click
y is the y coordinate of the click

References

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1. Graphical input from mouse or cursor , Accessed 2014-07-08, <http://www.mathworks.com/help/matlab/ref/ginput.html>