Gui table with dropdown problem

Hi! I am trying to create a GUI with table that includes first column with a dropdown list in each cell. But I keep getting an error. The opening fuction for the uitable is below:

% --- Executes just before GuiTable01 is made visible.
function GuiTable01_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% varargin   command line arguments to GuiTable01 (see VARARGIN)

% Choose default command line output for GuiTable01
handles.output = hObject;
% Update handles structure
guidata(hObject, handles);

Nrows = 40; Ncols = 6;
Data_init0 = cell(Nrows,Ncols);
set(handles.uitable1,'Data',Data_init0); % this creates an empty table
% to create a table with dropdown
Ndropdown = 4;
dropdown = categorical(ones(Nrows,1),1:Ndropdown,{'Select','HorLayer','VerLayer','Point'});
emp = cell(Nrows,0); % empty cells
tdata = table(dropdown,emp,emp,emp,emp,emp,'VariableNames',{'c1','c2','c3','c4','c5','c6'});
set(handles.uitable1,'Data',tdata);

This gives an error message "Error using matlab.ui.control.Table/set

Functionality not supported with figures created with the figure function. For more information, see Graphics Support in App Designer."

However, this is what I am trying to do:

Ndropdown = 4; Nrows = 40;
dropdown = categorical(ones(Nrows,1),1:Ndropdown,{'Select','HorLayer','VerLayer','Point'});
emp = cell(Nrows,0); % empty cells
tdata = table(dropdown,emp,emp,emp,emp,emp,'VariableNames',{'c1','c2','c3','c4','c5','c6'});
fig0 = uifigure; uit = uitable(fig0,'Data',tdata,'ColumnEditable',true);

I appreciate any ideas to fix the code or if there is any other ideas to do what I am trying to do.

Answer 1

[Jalaj Gambhir]

Hi,

Unfortunately, this functionality is not available in GUIDE. You can do the same in App Designer by using this code in the startupFcn callback:

Nrows = 40; Ncols = 6; 
Data_init0 = cell(Nrows,Ncols); 
app.UITable.Data = Data_init0; % this creates an empty table 
% to create a table with dropdown 
Ndropdown = 4; 
 
dropdown = categorical(ones(Nrows,1),1:Ndropdown,{'Select','HorLayer','VerLayer','Point'}); 
emp = cell(Nrows,0); % empty cells 
newDisplayData = table(dropdown,emp,emp,emp,emp,emp,'VariableNames',{'c1','c2','c3','c4','c5','c6'}); 
app.UITable.Data = newDisplayData; 
app.UITable.ColumnEditable = true; 

[Baha411]

Thanks for your reply. I am just checking it. Btw, do you know the difference between app designer and guide?

[Jalaj Gambhir]

Hi,

App Designer and GUIDE are two different methods of creating graphic applications in MATLAB. App Designer provides an enhanced UI component set and design environment. You can know more here.

[Baha411]

Thanks!

Quick questions... Is this suggesting that the App Designer is better and more advanced? Do you know limitations of each of these options? And is App Designer suggesting that Guide may be removed in future?