Return index from Plot3 using getCursorInfo(dcm_obj);

Question

Willem 2013-3-12

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/66899-return-index-from-plot3-using-getcursorinfo-dcm_obj

I am trying to figure this out. I have a 3d plot (x,y,z) in a GUIDE created GUI and I need to retrieve the DataIndex using the datacursor. I've used this in 2d plots and it works well but for some reason it will only ever return a value of 1.

% --- Executes on button press in pushbutton4. function pushbutton4_Callback(hObject, eventdata, handles) % hObject handle to pushbutton4 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) h = gcf; dcm_obj = datacursormode(h); info_struct = getCursorInfo(dcm_obj); set (handles.test_index,'str',info_struct.DataIndex);

Appreciate any help.

Thank you

Willem

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Answer 1

ChristianW 2013-3-12

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/66899-return-index-from-plot3-using-getcursorinfo-dcm_obj#answer_78358

在 MATLAB Online 中打开

Works for me:

function test
t = 0:pi/50:10*pi;
plot3(sin(t),cos(t),t)
uicontrol('Style', 'pushbutton','Callback',@pbcb)
datacursormode on
function pbcb(hObj,event)
dcm_obj = datacursormode(gcf); 
info_struct = getCursorInfo(dcm_obj); 
title(info_struct.DataIndex);