Disable option on a popupmenu

Hi guys.

I was trying to disable an option on a popupmenu1.

Because i have 2 popupmenus with the same options.

I want to disable an option when i choose the same option on both menu, for example:

If i choose the option binary on the popupmenu1 i want to disable the option "binary" on the popupmenu2.

Here i show an example that what i'm trying:

I'm working with GUIDE and and when i run my program MATLAB show me the next error:

This is my code:

popup1_choices = handles.popupmenu1.String;
source_base = popup1_choices{handles.popupmenu1.Value};
remaining_bases = setdiff(pupup1_choices,{source_base});
handles.popupmenu1.String = remaining_bases;
switch source_base
    case 1
        msgbox('No ha seleccionado ninguna base a convertir');
    case 2
        value_in_dec = bin2dec(value_in_str);
    case 3
        value_in_dec = hex2dec(value_in_str);
    case 4
        value_in_dec = sscanf(value_in_str,'%lo')
    case 5
        value_in_dec = sscanf(value_in_str,'%ld');       
end
popup2_choices = handles.popupmenu2.String;
dest_base = popup2_choices{handles.popupmenu2.Value};
switch dest_base
    case 1
        msgbox('No ha seleccionado ninguna base a convertir');
    case 2
        value_out_str = dec2bin(value_in_dec);
    case 3
        value_out_str = dec2hex(value_in_dec);
    case 4
        value_out_str = sprintf('%lo',value_in_dec)
    case 5
        value_out_str = sprintf('%ld',value_in_dec);
end
handles.edit2.String = value_out_str;

[Walter Roberson]

handles.popupmenu1.String = remaining_bases;

should be

handles.popupmenu2.String = remaining_bases;

but I do not see any way that could could produce an error about remaining_bases being undefined at that point.

[Stefany Romero]

Dear Walter, i've changed that line, but i still have the same error.

Can you check my code please?

This are my files:

I hope you can help me, i really need your help.

[Walter Roberson]

remaining_bases = setdiff(pupup1_choices,{source_base});

should be

remaining_bases = setdiff(popup1_choices,{source_base});

[Walter Roberson]

You need to go into your .fig file with GUIDE and edit the popup menu choices for your two popups. You need to remove the empty lines that you have after the Decimal choice.

You also need to make a number of other changes I already listed in your other Question, some of which I have already pointed out to you multiple times such as what your case statements need to be.

[Stefany Romero]

:(

Can you help me fixing those errors please?

Answer 1

[Image Analyst]

Stefany:

If you're going to be changing the words in popup2, then you cannot check the value (selected index) of it in your switch. Because one time a 3 might mean one thing (word) and another time it might mean a different thing (different base). You'll have to extract the selected item (word) itself, not just test its index.

selectedIndex2 = handles.popupmenu2.Value;
allItems = handles.popupmenu2.String;
selectedWord = allItems{selectedIndex2};
switch selectedWord
    case 'binary'
        % code
    case 'octal'
        % code
        % etc......
end

[Stefany Romero]

Image Analyst:

I just need disable the option:

Because i have 2 popupmenu with the same options:

If i select an option "binary" on the popupmenu1 i want the popupmenu 2 has disable the option (it wouldn't appear).

Please, can you check my files?

I still have errors. :(

[Walter Roberson]

Your newest code still tries to compare to numeric values. Image Analyst shows you here, and I showed you earlier multiple times that you need to case on the character vectors instead.

[Stefany Romero]

Why nobody understand i'm a noob here? :(

Mr Roberson, i know for you is so easy, but i was reading and reading and can't understand, that's the reazon i'm asking for help, can you please open my files and edit the errors?

[Stefany Romero]

I know it is not your obligation to help me, but i hope you can help me.

[Walter Roberson]

Image Analyst showed you. I showed you:

case 'Binary'

not

case 2

[Stefany Romero]

And that's the error?

I have to use Analyst's code or yours?

selectedIndex2 = handles.popupmenu2.Value;
allItems = handles.popupmenu2.String;
selectedWord = allItems{selectedIndex2};
switch selectedWord
    case 'binary'
        % code
    case 'octal'
        % code
        % etc......
end



%Roberson code%
popup1_choices = handles.popupmenu1.String;
source_base = popup1_choices{handles.popupmenu1.Value};
remaining_bases = setdiff(pupup1_choices,{source_base});
handles.popupmenu1.String = remaining_bases;
switch source_base

[Walter Roberson]

popup1_choices = handles.popupmenu1.String;
source_base = popup1_choices{handles.popupmenu1.Value};
value_in_str = handles.edit1.String;
switch source_base
    case 'Ninguno'
        msgbox('No ha seleccionado ninguna base a convertir');
    case 'Binary'
        value_in_dec = bin2dec(value_in_str);

and so on. And as I told you in your other question, that code needs to go in the callback for the second popup menu, not the first menu.

[Stefany Romero]

Mr Roberson, i've tried again, now there is no one errors, but still doesn't work becase i can select the same option on the popupmenu2, look:

I have this code right now:

popup1_choices = handles.popupmenu1.String;
source_base = popup1_choices{handles.popupmenu1.Value};
value_in_str = handles.edit1.String;
switch source_base
    case 'Ninguno'
        msgbox('No ha seleccionado ninguna base a convertir');
    case 'Binary'
        value_in_dec = bin2dec(value_in_str);
    case 'Hexadecimal'
        value_in_dec = hex2dec(value_in_str);
    case 'Octal'
        value_in_dec = sscanf(value_in_str,'%lo')
    case 'Decimal'
        value_in_dec = sscanf(value_in_str,'%ld');        
end
popup2_choices = handles.popupmenu2.String;
dest_base = popup2_choices{handles.popupmenu2.Value};
switch dest_base
    case 'Ninguno'
        msgbox('No ha seleccionado ninguna base a convertir');
    case 'Binary'
        value_out_str = dec2bin(value_in_dec);
    case 'Hexadecimal'
        value_out_str = dec2hex(value_in_dec);
    case 'Octal'
        value_out_str = sprintf('%lo',value_in_dec)
    case 'Decimal'
        value_out_str = sprintf('%ld',value_in_dec);
end
handles.edit2.String = value_out_str;

[Walter Roberson]

Okay, now what is the code that you have in the callback for popupmenu1, and what is the code you have in the callback for popupmenu2 ?

[Stefany Romero]

I don't know if i'm explaining well:

I can choose whatever option i want on the popupmenu1, in this case, i will choose Binary, that is the second option, and that option is on the same place than the popupmenu2. I only need that option disappear when i choose the same option on the popupmenu 2, example:

List of options on the popupmenu1:

>Ninguno

>Binary (We suppose i choose this option)

>Hexadecimal

>Octal

>Decimal

---So this option will not appear on the popupmenu2:

>Ninguno

>Hexadecimal

>Octal

>Decimal

[Stefany Romero]

All that code is on the callback of the popupmenu2.

So can you tell how to separate please?

Only writing: "Code popmenu1" "Code popmenu2"

[Walter Roberson]

Re-read the beginning of

https://www.mathworks.com/matlabcentral/answers/482368-how-to-disable-an-option-when-i-choose-the-same-option-at-the-other-me#comment_751450

[Stefany Romero]

Oh, i understand, the code is:

Callback popupmenu1:

popup1_choices = handles.popupmenu1.String;
source_base = popup1_choices{handles.popupmenu1.Value};
remaining_bases = setdiff(popup1_choices, {source_base});
handles.popupmenu2.String = remaining_bases;

Callback popupmenu2:

popup1_choices = handles.popupmenu1.String;
source_base = popup1_choices{handles.popupmenu1.Value};
value_in_str = handles.edit1.String;
switch source_base
    case 'Ninguno'
        msgbox('No ha seleccionado ninguna base a convertir');
    case 'Binary'
        value_in_dec = bin2dec(value_in_str);
    case 'Hexadecimal'
        value_in_dec = hex2dec(value_in_str);
    case 'Octal'
        value_in_dec = sscanf(value_in_str,'%lo')
    case 'Decimal'
        value_in_dec = sscanf(value_in_str,'%ld');    
end
popup2_choices = handles.popupmenu2.String;
dest_base = popup2_choices{handles.popupmenu2.Value};
switch dest_base
    case 'Ninguno'
        msgbox('No ha seleccionado ninguna base a convertir');
    case 'Binary'
        value_out_str = dec2bin(value_in_dec);
    case 'Hexadecimal'
        value_out_str = dec2hex(value_in_dec);
    case 'Octal'
        value_out_str = sprintf('%lo',value_in_dec)
    case 'Decimal'
        value_out_str = sprintf('%ld',value_in_dec);
end
handles.edit2.String = value_out_str;

That's right dear Walter?

[Walter Roberson]

That looks better.

Now remember to go into GUIDE and remove the empty lines from the choices for popupmenu1 and popupmenu2 . You currently have

Ninguno
Binary
Hexadecimal
Octal
Decimal
                      %empty line

The empty line is leading to problems.

Note: consider using the 'stable' option on the setdiff() call.

[Stefany Romero]

Finally work dear Walter, thanks a lot.