Help and Support on GUIDE - Pop up menu condition push button

Question

Gbola 2022-10-11

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1821768-help-and-support-on-guide-pop-up-menu-condition-push-button

评论： Rik 2023-1-8

Dear All,

I am creating a GUI to display the result (output) of combining three strings, each string from the 3 popup menus namely ‘A’, ‘B’ and ‘C’ with GUIDE.

The popup menu ‘A’ contains four strings: 0.0 to 0.25, 0.25 to 0.5, 0.5 to 0.75 and 0.75 to 1.0; popup menu ‘B’ contains the following 4 strings: K1, K2, K3 and K4 while popup menu ‘C’ contains the following 4 strings: L1, L2, L3 and L4.

I also have one static text ‘Display’ for displaying the output (result) of the combination of the 3 strings, selecting one string each, from the 3 popup menus.

Lastly, I have one condition pushbutton ‘Combine’ which function is to send the result of combining a set of 3 strings to the static text ‘Display’, after pressing the condition pushbutton which will use a series of nested If-elseif-else-end statements to test each of the conditions in order to determine and display an appropriate output (result) for each combination of the three strings.

For instance, if string 0.0 to 0.25 was selected from popup menu ‘A’, string K1 from popup menu ‘B’ and string L1 from popup menu ‘C’, the popup menu could send a word, e. g. Lion or any other word as a result (output) to the static text ‘Display’.

Also, if string 0.25 to 0.5 was selected from popup menu ‘A’, string K2 from popup menu ‘B’ and string L2 from popup menu ‘C’, the popup menu could send a word, e. g. Elephant or any other word as a result (output) to the static text ‘Display’.

Also, if string 0.5 to 0.75 was selected from popup menu ‘A’, string K3 from popup menu ‘B’ and string L3 from popup menu ‘C’, the popup menu could send a word, e. g. Tiger or any other word as a result (output) to the static text ‘Display’.

Also, if string 0.75 to 1.0 was selected from popup menu ‘A’, string K4 from popup menu ‘B’ and string L4 from popup menu ‘C’, the popup menu could send a word, e. g. Leopard or any other word as a result (output) to the static text ‘Display’.

Summarily, I have 3 popup menus ‘A’, ‘B’ and ‘C’, 1 static text ‘Display’ and 1 condition pushbutton ‘Combine’ on a figure (figure1).

Kindly do the needful.

Cheers.

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Rik 2022-10-22

You should not use == to compare two char vectors. That is probably what is going wrong here.

What you also might want to reconsider is your use of GUIDE. Fully building your GUI from code makes you have much more control and flexibility.

Also, please do not post duplicate questions.

Gbola 2022-10-25

Dear All,

Thanks for your assistance.

The answer has not helped to resolve my question. I don't know what is supposed to be written under each popup menu callback (that is, popupmenu1, popupmenu2 and popupmenu3) as well as what is supposed to be written under the push button callback (that is pushbutton1). I am still getting the error messages below:

>> animals

Undefined function or variable 'popupValue1'.

Error in animals>pushbutton1_Callback (line 232)

if popupValue1=='0.0-0.25' && popupValue2==K1 && popupValue3==L1

Error in gui_mainfcn (line 96)

feval(varargin{:});

Error in animals (line 42)

gui_mainfcn(gui_State, varargin{:});

Error in

@(hObject,eventdata)animals('pushbutton1_Callback',hObject,eventdata,guidata(hObject))

Error while evaluating uicontrol Callback.

Cheers.

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Answer 1

Image Analyst 2022-10-22

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1821768-help-and-support-on-guide-pop-up-menu-condition-push-button#answer_1081228

在 MATLAB Online 中打开

Do not do this:

popupValue1 = get(popupmenu1.handles,'value');

It's handles that comes first, not the control name. So it should be this (and switching to OOP style).

popupValue1 = handles.popupmenu1.Value; % Get index of selected item. 1, 2, 3, etc.

and check the index of the item you want, not the string. You had this originally:

if popupValue1==1 && popupValue2==1 && popupValue3==1

However, the indexes you want start with number 2 since the index = 1 are just things like "Select M".

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Image Analyst 2022-10-26

在 MATLAB Online 中打开

Why are you not using the code I gave you? For example instead of

if popupValue1==1 && popupValue2==1 && popupValue3==1

you're doing

if popupValue1=='0.0-0.25' && popupValue2==K1 && popupValue3==L1

like I said, make the values the Value of the popup, and compare them to numbers, not strings. Every callback where you have that if block, you should get all popup values directly using the known name of the popup control:

    popupValue1 = handles.popupmenu1.Value; % Get index of selected item. 1, 2, 3, etc.
    popupValue2 = handles.popupmenu2.Value; % Get index of selected item. 1, 2, 3, etc.
    popupValue3 = handles.popupmenu3.Value; % Get index of selected item. 1, 2, 3, etc.
    if popupValue1==1 && popupValue2==1 && popupValue3==1

Gbola 2022-10-29

移动：Voss 2022-12-28

Dear All,

Many thanks for your time and help.

The answer has helped partially to resolve my question. But I have got some error messages which are stated below:

I have attached the animals.fig and the animals.m file for your perusal.

>> animals

Error using feval

Undefined function 'animals_OutputFcn' for input arguments of type 'struct'.

Error in gui_mainfcn (line 265)

feval(gui_State.gui_OutputFcn, gui_hFigure, [], gui_Handles);

Error in animals (line 42)

gui_mainfcn(gui_State, varargin{:});

Error using feval

Undefined function 'pushbutton1_Callback' for input arguments of type 'struct'.

Error in gui_mainfcn (line 96)

feval(varargin{:});

Error in animals (line 42)

gui_mainfcn(gui_State, varargin{:});

Error in

@(hObject,eventdata)animals('pushbutton1_Callback',hObject,eventdata,guidata(hObject))

Error while evaluating uicontrol Callback

Error using feval

Undefined function 'popupmenu1_Callback' for input arguments of type 'struct'.

Error in gui_mainfcn (line 96)

feval(varargin{:});

Error in animals (line 42)

gui_mainfcn(gui_State, varargin{:});

Error in

@(hObject,eventdata)animals('popupmenu1_Callback',hObject,eventdata,guidata(hObject))

Error while evaluating uicontrol Callback

Error using feval

Undefined function 'popupmenu2_Callback' for input arguments of type 'struct'.

Error in gui_mainfcn (line 96)

feval(varargin{:});

Error in animals (line 42)

gui_mainfcn(gui_State, varargin{:});

Error in

@(hObject,eventdata)animals('popupmenu2_Callback',hObject,eventdata,guidata(hObject))

Error while evaluating uicontrol Callback

Error using feval

Undefined function 'popupmenu3_Callback' for input arguments of type 'struct'.

Error in gui_mainfcn (line 96)

feval(varargin{:});

Error in animals (line 42)

gui_mainfcn(gui_State, varargin{:});

Error in

@(hObject,eventdata)animals('popupmenu3_Callback',hObject,eventdata,guidata(hObject))

Error while evaluating uicontrol Callback

Error using feval

Undefined function 'pushbutton1_Callback' for input arguments of type 'struct'.

Error in gui_mainfcn (line 96)

feval(varargin{:});

Error in animals (line 42)

gui_mainfcn(gui_State, varargin{:});

Error in

@(hObject,eventdata)animals('pushbutton1_Callback',hObject,eventdata,guidata(hObject))

Error while evaluating uicontrol Callback

Thanks.

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Answer 2

Image Analyst 2022-10-30

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1821768-help-and-support-on-guide-pop-up-menu-condition-push-button#answer_1087323

It looks like you added an "end" statement at the end of every function. You should not do that. Take most of your end's out. If you can do that, then just recreate the GUI from scratch but don't add any "end"s to close off the functions.

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Gbola 2022-11-8

Dear All,

Many thanks for your time and assistance.

I am grateful for changing the push button1 callback to reflect edit1 rather than 'display'. But nothing is displayed in the edit1 after pressing push button1.

Each 'if' condition is to test for combination of 3 strings - each string from the 3 popupmenus, that is from popupmenu1, popupmenu2 and popupmenu3. The pushbutton1 is supposed to send the appropriate name of the animal (result) to edit1.

I could not see those lines having red squiggles under them as a result of having many of the 'if' conditions that check for the same set of numbers hence I could not correct them.

Kindly find the new error messages below:

>> animals3

Attempt to reference field of non-structure array.

Error in animals3>pushbutton1_Callback (line 173)

popupValue1 = handles.popupmenu1.Value; % Get index of selected item. 1, 2, 3, etc.

Error in gui_mainfcn (line 96)

feval(varargin{:});

Error in animals3 (line 42)

gui_mainfcn(gui_State, varargin{:});

Error in

@(hObject,eventdata)animals3('pushbutton1_Callback',hObject,eventdata,guidata(hObject))

Error while evaluating uicontrol Callback

More help is still needed.

Kindly do the needful.

Cheers.

Image Analyst 2022-11-8

在 MATLAB Online 中打开

I don't understand how the values are to be combined to determine the animal name. The items in the drop down lists have numbers and things like L1, K1, etc. Here is the callback:

popupValue1 = handles.popupmenu1.Value; % Get index of selected item. 1, 2, 3, etc.
popupValue2 = handles.popupmenu2.Value; % Get index of selected item. 1, 2, 3, etc.
popupValue3 = handles.popupmenu3.Value; % Get index of selected item. 1, 2, 3, etc.
if popupValue1==1 && popupValue2==1 && popupValue3==1
    handles.edit1.String = 'Lion';
elseif popupValue1 == 1 && popupValue2==1 && popupValue3==2  
    handles.edit1.String = 'Parro';
elseif popupValue1 == 1 && popupValue2==2 && popupValue3==1
    handles.edit1.String = 'Goat';
elseif popupValue1 == 1 && popupValue2==2 && popupValue3==2
    handles.edit1.String = 'Antelope';
elseif popupValue1 == 1 && popupValue2==1 && popupValue3==1
    handles.edit1.String = 'Dog';
elseif popupValue1 == 1 && popupValue2==1 && popupValue3==2
    handles.edit1.String = 'Tiger';
elseif popupValue1 == 1 && popupValue2==2 && popupValue3==1
    handles.edit1.String = 'Leopard';
    % else popupValue1==1 && popupValue2==2 && popupValue3==2
else 
    handles.edit1.String = 'Elephant';
end

The 4th, 5th, and 6th elseif's are checking sets of numbers that occurred earlier. For example if the values are 1,1,1 you are assigning 'Lion' but that means it will never get to the elseif where you are going to assign 'Dog'. Similar for the other two elseif's. You need to have unique sets of numbers. Other than that the code runs with no errors. Are you sure you ran the one I uploaded and not your original code?

Gbola 2022-11-13

Dear All,

Many thanks for your time and help.

The values are to be combined to determine an animal’s name by selecting a string from each of the 3 popup menus to form a combination. For instance:

If string 0.0 to 0.25 was selected from popup menu ‘A’, string K1 from popup menu ‘B’ and string L1 from popup menu ‘C’, the pushbutton1 should assign the word “Lion” as a result (output) and send same to the edit1 control.

Also, if string 0.0 to 0.25 was selected from popup menu ‘A’, string K1 from popup menu ‘B’ and string L2 from popup menu ‘C’, the pushbutton1 should assign the word “Parrot” as a result (output) and send same to the edit1 control.

Also, if string 0.0 to 0.25 was selected from popup menu ‘A’, string K2 from popup menu ‘B’ and string L1 from popup menu ‘C’, the pushbutton1 should assign the word “Goat” as a result (output) and send same to the editext1 control.

Also, if string 0.0 to 0.25 was selected from popup menu ‘A’, string K2 from popup menu ‘B’ and string L2 from popup menu ‘C’, the pushbutton1 should assign the word “Antelope” as a result (output) and send same to the editext1 control. etc.

I have had unique sets of numbers now. I am sure I ran the code you uploaded and not my original code.

On running the code, The GUIDE window was displayed but on selecting a set of three strings (one from each popup menu) and pressing the control "Combine" (a pushbutton) on it, the below error messages were displayed in the command window:

>> animals3

Attempt to reference field of non-structure array.

Error in animals3>pushbutton1_Callback (line 173)

popupValue1 = handles.popupmenu1.Value; % Get index of selected item. 1, 2, 3, etc.

Error in gui_mainfcn (line 96)

feval(varargin{:});

Error in animals3 (line 42)

gui_mainfcn(gui_State, varargin{:});

Error in

@(hObject,eventdata)animals3('pushbutton1_Callback',hObject,eventdata,guidata(hObject))

Error while evaluating uicontrol Callback

More help is still needed.

Kindly do the needful.

Cheers.

Gbola 2022-11-15

Dear All,

Many thanks for your time and help.

The values are to be combined to determine an animal’s name by selecting a string from each of the 3 popup menus to form a combination of three strings and thereby assign an animal's name (as stated in the nested if statements) and thereafter display the appropriate name of the animal in the control named edit1. For instance:

If string 0.0 to 0.25 was selected from popup menu ‘A’, string K1 from popup menu ‘B’ and string L1 from popup menu ‘C’, the pushbutton1 should assign the word “Lion” as a result (output) and send same to the control named edit1.

Also, if string 0.0 to 0.25 was selected from popup menu ‘A’, string K1 from popup menu ‘B’ and string L2 from popup menu ‘C’, the pushbutton1 should assign the word “Parrot” as a result (output) and send same to the control named edit1.

Also, if string 0.0 to 0.25 was selected from popup menu ‘A’, string K2 from popup menu ‘B’ and string L1 from popup menu ‘C’, the pushbutton1 should assign the word “Goat” as a result (output) and send same to thecontrol named edit1.

Also, if string 0.0 to 0.25 was selected from popup menu ‘A’, string K2 from popup menu ‘B’ and string L2 from popup menu ‘C’, the pushbutton1 should assign the word “Antelope” as a result (output) and send same to the control named edit1. etc.

I have had unique sets of numbers now. I am sure I ran the code you uploaded and not my original code.

On running the code, The GUIDE window appeared but on selecting a set of three strings (one from each popup menu) and pressing the control named "Combine" (a pushbutton) on the figure named fig1. You may wish to test the .fig and the .m files for confirmation purposes.

The below error messages were displayed in the command window:

>> animals3

Attempt to reference field of non-structure array.

Error in animals3>pushbutton1_Callback (line 173)

popupValue1 = handles.popupmenu1.Value; % Get index of selected item. 1, 2, 3, etc.

Error in gui_mainfcn (line 96)

feval(varargin{:});

Error in animals3 (line 42)

gui_mainfcn(gui_State, varargin{:});

Error in

@(hObject,eventdata)animals3('pushbutton1_Callback',hObject,eventdata,guidata(hObject))

Error while evaluating uicontrol Callback

More help is still needed.

Kindly do the needful.

Cheers.

Gbola 2022-12-25

Dear All,

Many thanks for your time and help.

This problem is still giving me sleepness nights without making any success. Kindly do the needful.