Displaying information about the data set by clicking on its plot not working when I run the program more than once

Hello,

So, I have a GUI and in this GUI I have several axis, and plots. In one of those plots I made a code to display info about the data set by clicking on it:

% --- Executes on mouse press over axes background.
function graph_5_ButtonDownFcn(hObject, eventdata, handles)
% hObject    handle to graph_5 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
x = handles.DenPot;
y = handles.Rend;
x_mat = handles.x_mat;
y_mat = handles.y_mat;
PartNumberHS = handles.PartNumberHS;
ConfigHS = handles.ConfigHS;
% datacursormode(handles.graph_5, 'on')
% dcm = datacursormode(handles.graph_5); 
 datacursormode(handles.figMainWindow, 'on') %on
%  dcm = datacursormode(gcf);
dcm = datacursormode(handles.figMainWindow);
set(dcm,'UpdateFcn',@(t,e) myupdatefcn(t,e,x,y,x_mat,y_mat, PartNumberHS, ConfigHS) );

where:

function txt = myupdatefcn(~,event,xdata,ydata,x_mat,y_mat, PartNumberHS, ConfigHS)
    pos = get(event,'Position');
    dts = get(event.Target,'Tag'); 
    [~,j]= find( xdata==pos(1) & ydata==pos(2)  );
%     xdata(1,:) = xdata(1,:) / 1000;
%     j=j(1);
    txt = {dts,...
           ['Densidade de Potência: ', num2str(pos(1)), ' [kW/dm³]'],...
           ['Rendimento: ', num2str(100 * pos(2)), ' [%]'],...
           ['Frequência de Chaveamento: ', num2str(xdata(1,j)), ' [Hz]' ],...
           ['Material do Indutor: ', x_mat{j}]...
           ['Dissipador: ', PartNumberHS{j}]...
           ['Configuração: ', ConfigHS{j}]}; 
       
end

It works great if I run the program just once:

The problem is, when I try to run the program again, without closing it, this info box does not work:

How can I fix this error?

Other thing, like I said, I have several other plots, and I don't want those plots to display this info box when I click them, and this is happening right now.

Thanks in advance!

Answer 1

[darova]

This is a bad idea to find appropriate data

better use pdist2

D = pdist(pos(:)',[xdata(:) ydata(:)]);
[~,j] = min(D);

[Pedro Augusto de Castro e Castro]

Thank you for your input!

Unfortunately, this does not solve the problem.

[darova]

Can you attach the whole project? So i can experiment by myself?