我在matlab中为Bisection方法制作一个GUI，当我按下按钮计算根时，我在一个名为rezInput的文本框字段中显示结果。
如果我打开* .m文件并从这里运行gui - 一切正常。
如果我直接打开* .fig文件，请输入值（功能，间隔，容差）并按下按钮我收到错误'rezInput字段不存在'。
这是错误：
??? Reference to non-existent field 'rezInput'.
Error in ==> mBisectoarei>calcBtn_Callback at 212
set(handles.rezInput, 'String', num2str(xr));
Error in ==> gui_mainfcn at 96
feval(varargin{:});
Error in ==> mBisectoarei at 42
gui_mainfcn(gui_State, varargin{:});
Error in ==>
@(hObject,eventdata)mBisectoarei('calcBtn_Callback',hObject,eventdata,guidata(hObject))
??? Error while evaluating uicontrol Callback
......以及整个代码：
function varargout = mBisectoarei(varargin)
% MBISECTOAREI M-file for mBisectoarei.fig
% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name', mfilename, ...
'gui_Singleton', gui_Singleton, ...
'gui_OpeningFcn', @mBisectoarei_OpeningFcn, ...
'gui_OutputFcn', @mBisectoarei_OutputFcn, ...
'gui_LayoutFcn', [] , ...
'gui_Callback', []);
if nargin && ischar(varargin{1})
gui_State.gui_Callback = str2func(varargin{1});
end
if nargout
[varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
else
gui_mainfcn(gui_State, varargin{:});
end
% End initialization code - DO NOT EDIT
% --- Executes just before mBisectoarei is made visible.
function mBisectoarei_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject handle to figure
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% varargin command line arguments to mBisectoarei (see VARARGIN)
% Choose default command line output for mBisectoarei
handles.output = hObject;
% Update handles structure
guidata(hObject, handles);
% UIWAIT makes mBisectoarei wait for user response (see UIRESUME)
% uiwait(handles.figure1);
% --- Outputs from this function are returned to the command line.
function varargout = mBisectoarei_OutputFcn(hObject, eventdata, handles)
% varargout cell array for returning output args (see VARARGOUT);
% hObject handle to figure
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% Get default command line output from handles structure
varargout{1} = handles.output;
function functieInput_Callback(hObject, eventdata, handles)
% hObject handle to functieInput (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% Hints: get(hObject,'String') returns contents of functieInput as text
% str2double(get(hObject,'String')) returns contents of functieInput as a double
functie = get(hObject,'String');
% save new value to global hObject for later use
handles.tb.functie = functie;
guidata(hObject,handles)
% --- Executes during object creation, after setting all properties.
function functieInput_CreateFcn(hObject, eventdata, handles)
% hObject handle to functieInput (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: edit controls usually have a white background on Windows.
% See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
set(hObject,'BackgroundColor','white');
end
function intervalA_Callback(hObject, eventdata, handles)
% hObject handle to intervalA (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% Hints: get(hObject,'String') returns contents of intervalA as text
% str2double(get(hObject,'String')) returns contents of intervalA as a double
intA = str2num(get(hObject,'String'));
% save new value to global hObject for later use
handles.tb.intA = intA;
guidata(hObject,handles)
% --- Executes during object creation, after setting all properties.
function intervalA_CreateFcn(hObject, eventdata, handles)
% hObject handle to intervalA (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: edit controls usually have a white background on Windows.
% See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
set(hObject,'BackgroundColor','white');
end
function intervalB_Callback(hObject, eventdata, handles)
% hObject handle to intervalB (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% Hints: get(hObject,'String') returns contents of intervalB as text
% str2double(get(hObject,'String')) returns contents of intervalB as a double
intB = str2num(get(hObject,'String'));
% save new value to global hObject for later use
handles.tb.intB = intB;
guidata(hObject,handles)
% --- Executes during object creation, after setting all properties.
function intervalB_CreateFcn(hObject, eventdata, handles)
% hObject handle to intervalB (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: edit controls usually have a white background on Windows.
% See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
set(hObject,'BackgroundColor','white');
end
function tolInput_Callback(hObject, eventdata, handles)
% hObject handle to tolInput (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% Hints: get(hObject,'String') returns contents of tolInput as text
% str2double(get(hObject,'String')) returns contents of tolInput as a double
tol = str2double(get(hObject,'String'));
% save new value to global hObject for later use
handles.tb.tol = tol;
guidata(hObject,handles)
% --- Executes during object creation, after setting all properties.
function tolInput_CreateFcn(hObject, eventdata, handles)
% hObject handle to tolInput (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: edit controls usually have a white background on Windows.
% See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
set(hObject,'BackgroundColor','white');
end
% --- Executes on button press in calcBtn.
function calcBtn_Callback(hObject, eventdata, handles)
% hObject handle to calcBtn (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% BEGIN mBisectoarei
f = inline(handles.tb.functie);
xl = handles.tb.intA;
xu = handles.tb.intB;
tol = handles.tb.tol;
if f(xu)*f(xl)<0
else
set(handles.rezInput, 'String', 'Interval gresit!');
end
for i=2:1000
xr=(xu+xl)/2;
if f(xu)*f(xr)<0
xl=xr;
else
xu=xr;
end
if f(xl)*f(xr)<0
xu=xr;
else
xl=xr;
end
xnew(1)=0;
xnew(i)=xr;
if abs((xnew(i)-xnew(i-1))/xnew(i))<tol,break,end
end
set(handles.rezInput, 'String', num2str(xr));
function rezInput_Callback(hObject, eventdata, handles)
% hObject handle to rezInput (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles structure with handles and user data (see GUIDATA)
% Hints: get(hObject,'String') returns contents of rezInput as text
% str2double(get(hObject,'String')) returns contents of rezInput as a double
% --- Executes during object creation, after setting all properties.
function rezInput_CreateFcn(hObject, eventdata, handles)
% hObject handle to rezInput (see GCBO)
% eventdata reserved - to be defined in a future version of MATLAB
% handles empty - handles not created until after all CreateFcns called
% Hint: edit controls usually have a white background on Windows.
% See ISPC and COMPUTER.
if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor'))
set(hObject,'BackgroundColor','white');
end
答案 0 :(得分：0)
不能通过直接打开.fig文件来运行MATLAB GUIS。看看this MathWorks链接。在标有＆＃34;保存GUI布局的部分下，＆＃34;找到第六（6）段。在屏幕截图下，您将看到＆＃34;注意：＆＃34;这解释了你的问题。