Symbolic value assignment in GUIDE

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Muhendisleksi
Muhendisleksi el 20 de Dic. de 2017
Comentada: Muhendisleksi el 22 de Dic. de 2017
function pushbutton1_Callback(hObject, eventdata, handles)
% hObject handle to pushbutton1 (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
F=get(handles.edit1,'String');
D=get(handles.edit3,'String');
f = sym(F);
D = symvar(D);
turev =diff(f,D);
set(handles.text2,'String',turev) % there is an error here

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Geoff Hayes
Geoff Hayes el 20 de Dic. de 2017
Muhendisleksi - try using char to convert the symbolic expression to a string that you can then set in the text control. For example,
...
turev =diff(f,D);
set(handles.text2,'String',char(turev)) % there is an error here
Unfortunately, I don't have the Symbolic Toolbox so I can't confirm if the above will work.
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Walter Roberson
Walter Roberson el 20 de Dic. de 2017
Yes, that should work.
If you have a symbolic array, then if you char() it then you will get text that begins with 'matrix(' which you probably do not want. So for that, use
arrayfun(@char, SymbolicVariableNameHere, 'uniform', 0)
to get a cell array of character vectors with the contents. You would then have to decide how you wanted to present that array as text.
Muhendisleksi
Muhendisleksi el 22 de Dic. de 2017
thanks Geoff Hayes

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