How to add a column to a UItable in AppDesigner

I have created a UITable. I have a button which I want the user to be able to add a column and assign there own name to it.

I can rename a column: app.UITable.ColumnName{1} = 'mark';

I can add a name: app.UITable.ColumnName{end+1} = 'mark';

but when I add it does not display, why not?

Answer 1

[Simon Chan]

I think it is better to record the number of columns in the uitable before you added a new column and assign the name to the new column as follows:

Nc = length(app.UITable.ColumnName);            % Record the original number of columns in uitable
%
%   Your code adding new column in the uitable
%
app.UITable.ColumnName{Nc+1} = 'New Column'

[Mark Eigenraam]

Thank you. I have tried that and the result is the same.

the column does not appear in the Figure (GUI)

how do we update the GUI so the new column is shown?

[Simon Chan]

Could you post the entire callback function?

[Mark Eigenraam]

        % Button pushed function: AddcolumnButton
        function AddcolumnButtonPushed(app, event)
            new_name = inputdlg('Please enter new column name');
            if isempty(new_name)
                %user has pressed cancel or not entered any text
                return
            end 
            app.UITable.Data(:,end+1)={''}; % add column
            % column_name=char(inputdlg('Please enter new column name'));
            app.UITable.ColumnName{end+1}=char(new_name);
            %app.UITable.ColumnSortable(end+1) = 1;
            %app.UITable.ColumnSortable = [true false true true];
            %app.UITable.ColumnEditable = [true false true true];


        end

this is now adding a column and a name, but the table data (app.UITable.Data) do not include the name at the top

[Simon Chan]

I am a little bit confuse now.

If you want the data inside the table to display the ColumnName as well, add one more line as follows:

app.UITable.Data(:,end+1)={''};         % add column
app.UITable.Data(:,end)=new_name;       % Put the name inside the new column