How can i get value from pop up menu

Hello everyone

i want to get values from popup menu. And then i want to set this values for plot command. How can i do this

N7=num2strget(handles.popupmenu2,'String')

plot(N1,N2,N7);

function popupmenu2_Callback(hObject, eventdata, handles)

switch get(handles.popupmenu,'Value')

if (a==1)

set(handles.popupmenu2,'Value','o');

elseif (a==2)

set(handles.popupmenu2,'Value','+');

elseif (a==3)

set(handles.popupmenu2,'Value','s');

elseif (a==4)

set(handles.popupmenu2,'Value','x');

elseif (a==5)

set(handles.popupmenu2,'Value','-');

elseif (a==6)

set(handles.popupmenu2,'Value','*');

elseif (a==7)

set(handles.popupmenu2,'Value','d');

end

Answer 1

[Adam Danz]

The "value" property of a popup menu indicates the user's selection by returning the index value (an integer). The "string" property lists the options. To identify the string selected, you must use the index value to access the cell array of strings. Here's a functional example.

%Create quick popup menu
h = uicontrol('style','popup','string',{'Lancaster', 'Cincinnati', 'Sofia', 'Rochester'});

%Let's say I selected the 2nd option: "Cincinnati"
h.Value --> 2 
h.String --> {'Lancaster', 'Cincinnati', 'Sofia', 'Rochester'}.'
h.String{h.Value} --> 'Cincinnati'

To adapt that to your needs,

selectedString = h.String{h.Value}; 
switch selectedString
    case 'Lancaster'
         % do something
    case 'Cincinnati'
         % do something
    case 'Sofia'
         % do something
    case 'Rochester'
         % do something
    otherwise
        error('Did not recognized string ''%s''', selectedString)
end

[sahin sezgin]

thank you

[Adam Danz]

If you have any questions about this, please let me know here in the comments section.

[sahin sezgin]

i can plot this but i can't change data plot style with plot button this is actually my problem and i couldn't do it with your codes

[Adam Danz]

There are several approaches but I'll continue what I started....

selectedString = h.String{h.Value}; 
switch selectedString
    case 'Circle'
         markerSym = 'o'; 
    case 'Plus'
         markerSym = '+'
    case 'Square'
         markerSym = 's'
    % You get the point.. add the other cases
    otherwise
        error('Did not recognized marker type ''%s''', selectedString)
end

plot(x,y,'-o', 'Marker', markerSym)

https://www.mathworks.com/help/matlab/ref/matlab.graphics.primitive.line-properties.html#bubwptp-1_sep_shared-Marker

[sahin sezgin]

thank you a lot you saved my life :D

It works thank you again

[Adam Danz]

Glad I could help!