user interface - In a MATLAB GUI, extract coordinates by clicking inside a plot and display it -

i'm pretty new matlab, have looked everywhere solution problem :

let's use gui example :

how can i, clicking somewhere inside plot, display x coordinate in text box ?

here's code tried in gui code, couldn't work :

function axes1_buttondownfcn(hobject, eventdata, handles)  [x y] = get(gca,'currentpoint');  set(handles.edit1,'string', num2str(x));  guidata(hobject, handles); 

edit: oh, misread question. pushed original answer bottom of post. might still useful. here go:

function axes1_buttondownfcn(hobject, eventdata, handles)  [x y] = eventdata;  set(handles.edit1,'string', num2str(x));  guidata(hobject, handles); 

note, i've seen instances eventdata doesn't work. if try use , it's empty, let me know , i'll try walk through doing using custom datacursormode tooltip callback function, more complex, doable.

original:

datacursormode on 

for additional information see this page. i've done lot of work custom data cursor mode functions, , plot-clicky things, if have more specfic questions, feel free ask.