Appdesigner - Edit the column names during run time

Hello everybody, I am trying to create an app in MATLAB appdesigner. While trying to insert a table with the number of rows and columns as input from the user and initialized using a push button, I am not able to vary the names of the column headers.

If I take 'numbered' option it is adjusting to the input but I am not able to edit the column names.

Please let me know if there is any option for this.

Thank you

[Cris LaPierre]

Can you share the code you are using to create the table?

[shyam prithvi tanuku]

Thank you for the response. Sure. Please let me know if any additional information is needed.

methods (Access = private)
            % Value changed function: NumberofPropulsorsEditField
            function NumberofPropulsorsEditFieldValueChanged(app, event)
                NoP = app.NumberofPropulsorsEditField.Value;
                
            end
            % Value changed function: NumberofGenSetsEditField
            function NumberofGenSetsEditFieldValueChanged(app, event)
                NoG= app.NumberofGenSetsEditField.Value;
                
            end
            % Value changed function: NumberofConsumersEditField_2
            function NumberofConsumersEditField_2ValueChanged(app, event)
                NoC = app.NumberofConsumersEditField_2.Value;
                
            end
            % Value changed function: NumberofPrimemoversEditField
            function NumberofPrimemoversEditFieldValueChanged(app, event)
                NoPM = app.NumberofPrimemoversEditField.Value;
                
            end
            % Value changed function: NumberofSwitchboardsEditField
            function NumberofSwitchboardsEditFieldValueChanged(app, event)
                NoS = app.NumberofSwitchboardsEditField.Value;
                
            end
            % Button pushed function: InitializeButton
            function InitializeButtonPushed(app, event)
                %% Produers table
                
                NoG = app.NumberofGenSetsEditField.Value;
                NoPM = app.NumberofPrimemoversEditField.Value;
                NoR = NoG+NoPM;
                app.producers.Data= cell(NoR,3);
                app.producers.ColumnEditable = true;
                
                %%consumers table
                NoC = app.NumberofConsumersEditField_2.Value;
                app.consumers.Data= cell(NoC,2);
                app.consumers.ColumnEditable = true;
                
    %             %switchboard table
    %             NoS = app.NumberofSwitchboardsEditField.Value;
    %             app.connections.Data= cell(NoS,NoR+1);
    %             app.connections.ColumnEditable = true;
                
                %connections table
                NoS = app.NumberofSwitchboardsEditField.Value;
                app.connections.Data= cell(NoS+1,NoR+1);
                app.connections.ColumnEditable = true;
                
                %%distribution table
                NoP = app.NumberofPropulsorsEditField.Value;
                app.distribution.Data= cell(NoC+NoP,NoS+1);
                app.distribution.ColumnEditable = true;
                
                
            end
            
             % Create connections
            app.connections = uitable(app.UIFigure);
            app.connections.ColumnName = {'source'; 'GS1'; 'GS2'; 'PM2'; 'PM2'};
            app.connections.RowName = {};
            app.connections.ColumnEditable = true;
            app.connections.CellEditCallback = createCallbackFcn(app, @connectionsCellEdit, true);
            app.connections.Position = [15 220 624 185];

[Cris LaPierre]

Your edit field callbacks are unnecessary given the code you have shared. The code is duplicated in your pushbutton callback. If you do want to use edit field callbacks to set variable values, you should make the variables app properties. See here: https://www.mathworks.com/help/matlab/creating_guis/share-data-across-callbacks-in-app-designer.html

It looks like you have already added 4 table components to your app canvas (named app.producers, app.consumers, app.connections and distribution). Is that correct?

I do not understand where the 'create connections' code at the bottom is coming from. Is it necessary if you have already added a app.connections Table component to your canvas? I assume you must because you are setting its properties in the push button callback.

[shyam prithvi tanuku]

It is necessary as the table is initialized using the push button. Is it possible to change the column names during run time or should I just an additional row, where the column names can be added?

[Cris LaPierre]

It is possible. If it is meant to be part of the pushbutton callback, it needs to be placed before the end statement.

What still isn't clear, though, is where you are going to place it because the first line (app.connections = uitable(app.UIFigure);) overwrites app.connections, removing any information you previously added to it.

This at least works for me, assuming N0G+NoPM = 4

function InitializeButtonPushed(app, event)
    %% Produers table
    NoG = app.NumberofGenSetsEditField.Value;
    NoPM = app.NumberofPrimemoversEditField.Value;
    NoR = NoG+NoPM;
    app.producers.Data= cell(NoR,3);
    app.producers.ColumnEditable = true;

    %%consumers table
    NoC = app.NumberofConsumersEditField.Value;
    app.consumers.Data= cell(NoC,2);
    app.consumers.ColumnEditable = true;

    % Create connections
    app.connections = uitable(app.UIFigure);
    app.connections.ColumnName = {'source'; 'GS1'; 'GS2'; 'PM2'; 'PM2'};
    app.connections.RowName = {};
    app.connections.ColumnEditable = true;
    app.connections.CellEditCallback = createCallbackFcn(app, @connectionsCellEdit, true);
    app.connections.Position = [15 220 624 185];

    %connections table
    NoS = app.NumberofSwitchboardsEditField.Value;
    app.connections.Data= cell(NoS+1,NoR+1);

    %%distribution table
    NoP = app.NumberofPropulsorsEditField.Value;
    app.distribution.Data= cell(NoC+NoP,NoS+1);
    app.distribution.ColumnEditable = true;
end

[shyam prithvi tanuku]

Thank you for the response. I have tried the above code but I am not able to edit the column names during run-time.

Answer 1

[Cris LaPierre]

I suspect column names are not editable. It is the values in the table that are editable.

See here: https://www.mathworks.com/matlabcentral/answers/420626-how-can-the-column-names-of-a-uitable-be-defined-as-editable