GUI Error Message in the use of a push button and it is NOT the addition of 'guidata(hObject, handles);' that is missing

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David Fraser
David Fraser 2011-11-25
These are all of the input values for my GUI which are being converted into numbers.
rmin=str2num(get(handles.inputrmin,'String'));
thetamin=str2num(get(handles.inputthetamin,'String'));
thetamax=str2num(get(handles.inputthetamax,'String'));
BOC=str2num(get(handles.inputBOC,'String'));
OC=str2num(get(handles.inputOC,'String'));
m=str2num(get(handles.inputm,'String'));
rmax=str2num(get(handles.inputrmax,'String'));
A function is then used which calculates outputs below
opt_a, opt_b, Fmin/1000, opt_phi
These are then converted back to strings
a1=num2str(opt_a);
b1=num2str(opt_b);
Fmin1=num2str(Fmin/1000);
phi1=num2str(opt_phi);
phi1D=rad2deg(phi1);
set(handles.outputopt_a,'String',a1);
set(handles.outputopt_b,'String',b1);
set(handles.outputOptimum_Force_KN,'String',Fmin1);
set(handles.outputopt_phi,'String',phi1D);
guidata(hObject, handles);
I am getting the following error message
??? Reference to non-existent field 'outputopt_a'.
Error in ==> GUI>calculate_Callback at 371
set(handles.outputopt_a,'String',a1);
I have checked the GUI static text box which is to recieve the output and the tag is 'outputopt_a' so there is no difference here. Any idea where i have gone wrong?

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采纳的回答

karan
karan 2011-11-25
check calculation for opt_a...can u post the function
if opt_a is computed in a different function u need to store it in that function and get the same data to this new function where u give commands for set
  2 个评论
karan
karan 2011-11-25
do
handles.set_my_field = opt_a
in function where u computed
do a guidata(hObject, handles); at the end of the same function
by this you are saving the handles such that it can be used by other functions later.
no w in the function where u give commands to set your values
opt_a = handles.set_my_field
this would give u access back to the same values of opt_a in the other function where u desire it to be

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