Filters in pop up menu

I have code which reads Test.csv data into GUI into two pop up menus like below.

The code I have used is

My requirement is,

1.) Wanted to get only Bus companies in the Register pop up menu when Bus is selected Module pop up menu

Right now, all the items are coming in Register pop up menu when I select anything in Module pop up menu.

Its like adding filters in the excel file.

Can anyone help me here??

Thanks in advance

Answer 1

[VBBV]

Hi @Basanagouda Kenchanagoudra, You can use switch-case inside the Callback as shown below

Item =  get(handles.Module_PopUp,'String')  % get the unique list of items
ItemV =  get(handles.Module_PopUp,'Value')  % get the value of item selected in popupmenu

switch Item{ItemV}  % use a swtich case for filtering items 
    case 'Bike'
          idx = find(get_module_names == "Bike");       % search for similar items    /bike
          set(handles.Reg_PopUp,'String',get_reg_names(idx));
    case 'Car'
          idx = find(get_module_names == "Car")          % search for similar items    /car
          set(handles.Reg_PopUp,'String',get_reg_names(idx));
    case 'Bus'
          idx = find(get_module_names == "Bus");          % search for similar items    /bus 
          set(handles.Reg_PopUp,'String',get_reg_names(idx));
end