MATLAB: Help me How to get the string from popup menu in matlab GUI

MATLABpoup menu gui

Could you help me how to get the string in matlab GUI. I wrote : get(handles.popupmenu1,'string'). but it's error and can't get the string from popup menu. thanks you very much.

Best Answer

That should give you a list of all the items in the popup. I'm surprised it gives you an error. Even if it's empty I would think it would return null, []. What does the error message say exactly?

Normally you'd do something like

allItems = get(handles.popupmenu1,'string')
selectedIndex = get(handles.popupmenu1,'Value')
selectedItem = allItems{selectedIndex};

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MATLAB: Linking a pushbutton to two dropdown menus in GUIDE

vedesh - in the pushbutton callback, you would use the handles structure to get the selections from the two dropdown menus. Your code could look something like the following

function pushbutton1_Callback(hObject, eventdata, handles) 
% get the selection from the first drop down menu
popup1List = get(handles.popup1,'String'); % get the list of items of popup1
popup1Index = get(handles.popup1,'Value'); % get the index of the selected item of popup1
popup1Value = popup1List{idx};             % get the value of the selected item of popup1
% get the selection from the second drop down menu
popup2List = get(handles.popup2,'String'); % get the list of items of popup2
popup2Index = get(handles.popup2,'Value'); % get the index of the selected item of popup2
popup2Value = popup2List{idx};             % get the value of the selected item of popup2
% note that popup1Value and popup2Value are strings so you may need to convert to numbers is
% applicable
% do whatever work you need to and draw line on axes

MATLAB: Get the selected value in a popup menu with a set

jacques - if you want to get the selected item you would first get the index of the selected value

 idx = get(handles.popupname,'Value');

Once you have the index, you can then determine which is the selected item from your list

 items = get(handles.popupmenu1,'String')
 selectedItem = items{idx};

Best Answer

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MATLAB: Linking a pushbutton to two dropdown menus in GUIDE

MATLAB: Get the selected value in a popup menu with a set

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