How to Add selected values of Listbox in MATLAB GUI?

function listbox1_Callback(hObject, eventdata, handles)
contents= cellstr(get(hObject,'String'));
listchoice=contents(get(hObject,'Value'));
if(strcmp(listchoice,'a'))
    lis1=10;
elseif(strcmp(listchoice,'b'))
    lis1=20;
elseif(strcmp(listchoice,'c'))
    lis1=30;
elseif(strcmp(listchoice,'d'))
    lis1=40;
elseif(strcmp(listchoice,'e'))
    lis1=50;
end
assignin('base','lis1',lis1);

i have created a listbox with five options with their respected values and when i select more than 1 option , I want the result to be added in the respective listbox.

[Ankit]

what do you mean by result to be added in the respective listbox?

You mean transfer selected options (more than 1) to another listbox?

[ANURAG DEEPAK]

I have a listbox in which a user can select multiple choices and a popupmenu with their corresponding choices. In the edit text box i want the multiplied result of selected values(which is to added as the user can select more than one items) of listbox and poupmenu.

function listbox1_Callback(hObject, eventdata, handles)
contents= cellstr(get(hObject,'String'));
lischoice=contents(get(hObject,'Value'));
if(strcmp(lischoice,'a'))
    l_value=0.10;
elseif(strcmp(lischoice,'b'))
    l_value=0.20;
elseif(strcmp(lischoice,'c'))
    l_value=0.30;
end
set(handles.listbox1,'Userdata',l_value);
assignin('base','l_value',l_value);

function popupmenu1_Callback(hObject, eventdata, handles)
contents=cellstr(get(hObject,'String'));
popchoice1=contents(get(hObject,'Value'));
if(strcmp(popchoice1,'x'))
    pop1val=10;
elseif(strcmp(popchoice1,'y'))
    pop1val=20;
elseif(strcmp(popchoice1,'z'))
    pop1val=30;
end
set(handles.popupmenu1,'UserData',pop1val);
assignin('base','pop1val',pop1val);

function pushbutton1_Callback(hObject, eventdata, handles)
pop1val=evalin('base','pop1val');
l_value=evalin('base','l_value');
c=pop1val*l_value;
set(handles.edit1,'String',c);

[Ankit]

your listbox1_Callback returns single value according to your code.

[ANURAG DEEPAK]

Sir my question remain same as how can i obtain multiple selection in listbox and add them up. For example ,if the user selects "a" and "c" choices in listbox then the result shown by listbox callback should be 0.40 which is to be shown in "base" workspace???

[Ankit]

How can I select multiple items from a GUI listbox?

[ANURAG DEEPAK]

function listbox1_Callback(hObject, eventdata, handles)
contents=cellstr(get(hObject,'String'));
lischoice=contents(get(hObject,'Value'));
set(handles.listbox1,'Value');
assignin('base','lischoice',lischoice);

With this above code i am able to select multiple items in listbox, but this is giving only cell array (String). So how can i provide values to choices made in listbox and add them up?? (With reference to above codes).

Answer 1

[Ankit]

This is not the best way but a working solution!

function listbox1_Callback(hObject, eventdata, handles)
contents= cellstr(get(hObject,'String'));
lischoice=contents(get(hObject,'Value'));
if numel(lischoice)>=2
choice1 = lischoice(1);
choice2 = lischoice(2);
    if (strcmp(choice1,'a'))
        l1=0.10;
    elseif (strcmp(choice1,'b'))
        l1=0.20;
    elseif (strcmp(choice1,'c'))
        l1=0.30;
    end
    if (strcmp(choice2,'a'))
        l2=0.10;
    elseif (strcmp(choice2,'b'))
        l2=0.20;
    elseif (strcmp(choice2,'c'))
        l2=0.30;
    end
l_value = l1 + l2;
else
    if (strcmp(lischoice,'a'))
        l_value = 0.10;
    elseif (strcmp(lischoice,'b'))
        l_value = 0.20;
    elseif (strcmp(lischoice,'c'))
        l_value = 0.30;
    end
end
assignin('base','l_value',l_value);

[ANURAG DEEPAK]

Thanks Sir...