How do I pass variable from one function to another

Hi!

How can I make this code work? I can't seem to find a way to pass variable 'v' to a different local function.

Tahnk you!

 function [v] = Popup(obj, handles , h_listbox)
        parameters=detectImportOptions('Data.xlsx');
        v = get(obj,'Value');
        disp(v)
        set(h_listbox,'String',datestr(readvars('Data.xlsx',parameters,'Sheet',v)))


 end


 function  Listbox(obj,h_popupmenu ,h_8things, handles)

    k = get(obj,'Value');
    Data = (readmatrix("Data.xlsx","Range",'B2:X32','Sheet', v));

    polarhistogram(Data(k,:),16)
            

 end

Answer 1

[Voss]

How about this?

function [v] = Popup(obj, handles , h_listbox)
      parameters=detectImportOptions('Data.xlsx');
      v = get(obj,'Value');
      disp(v)
      set(h_listbox,'String',datestr(readvars('Data.xlsx',parameters,'Sheet',v)))

 end

 function  Listbox(obj,h_popupmenu ,h_8things, handles)

    k = get(obj,'Value');
    Data = (readmatrix("Data.xlsx","Range",'B2:X32','Sheet', get(h_popupmenu,'Value')));

    polarhistogram(Data(k,:),16)

 end

If that doesn't work, we would have to see how the callbacks are set.

[Abrathamist]

Unfortunately it did not fix the problem. My callbacks are set as following:

h_listbox=uicontrol('Parent',h_figure,...
            'Tag','listbox1','Callback',{@Listbox, h_popupmenu,h_8things});

h_popupmenu=uicontrol(h_figure,...
    'Tag','popupmenu1','Callback', {@Popup, h_listbox});

Thank you!

[Voss]

Setting the listbox Callback to include the popupmenu as an argument will not work like that, because the popupmenu has not been created yet when the listbox is created. Try this instead:

h_listbox=uicontrol('Parent',h_figure,...
            'Tag','listbox1');

h_popupmenu=uicontrol(h_figure,...
    'Tag','popupmenu1','Callback', {@Popup, h_listbox});

set(h_listbox,'Callback',{@Listbox,h_popupmenu,h_8things});


function [v] = Popup(obj,~,h_listbox)
    parameters=detectImportOptions('Data.xlsx');
    v = get(obj,'Value');
    disp(v)
    set(h_listbox,'String',datestr(readvars('Data.xlsx',parameters,'Sheet',v)))
end


function Listbox(obj,~,h_popupmenu,h_8things)
    k = get(obj,'Value');
    Data = (readmatrix("Data.xlsx","Range",'B2:X32','Sheet', get(h_popupmenu,'Value')));
    polarhistogram(Data(k,:),16)
end

[Abrathamist]

That works great! Thank you so much!

[Voss]

Excellent! Glad it is working.