How to plot a scatter plot from a UI table

I have edited and added values to a UI Table based on the Number of sensors needed . I am Trying to find a method to plot the new values in a scatter plot

    properties (Access = private)
        sensor_table = gobjects(1,1);   %initialize as graphics object 
       T% Table to be shared between callbacks 
    end
    

    % Callbacks that handle component events
    methods (Access = private)

        % Button pushed function: RunButton
        function RunButtonPushed(app, event)
            N = app.NoofSensorsEditField.Value;
            sensor_number = (1:N).';
            x_coordinate = zeros(N,1);
            y_coordinate = zeros(N,1);
            app.T = table(sensor_number, x_coordinate, y_coordinate);
            app.sensor_table = uitable(app.UIFigure, 'Data', app.T);
            app.sensor_table.ColumnEditable = true;
            
        end

        % Button pushed function: ADDButton
        function ADDButtonPushed(app, event)
            app.T=app.sensor_table;
            

Answer 1

[Ananya Tewari]

Hi,

I understand you want to plot the table data using the scatter plot. We can leverage the scatter plot doc, here is an example for the same. We can give the UIAxes on which data is to be plotted, alongwith the data coordinates.

scatter(app.UIAxes,sensor_number,[x_coordinates;y_coordinates]);

Feel free to change the input arguments as per your requirement.

[Jeet Shetty]

I tried it but i am getting this "Unrecognized function or variable 'sensor_number'." as the error. I am trying to utilize a data from another call back and i have intialised properties to acquire the table but i dont know how i can do it for the sensor names

  % Button pushed function: ADDButton
        function ADDButtonPushed(app, event)
            app.T=app.sensor_table;
         scatter(app.UIAxes,sensor_number,[x_coordinates;y_coordinates]);

additionnally im not sure if the new values are being saved, those are the codes ive implemented to add the new values to the table

[Ananya Tewari]

Currently sensor_number is not defined and that is the probable cause for the error. You can define sensor_number as a property in the Code and access it inside the callbacks. Please refer to this link for creating properties in App Designer code.

Hope this helps !

[Jeet Shetty]

I have already Made the table "t" as the property and sensor_number is a part of that .. won't it be called when i call the table itself?

[Ananya Tewari]

You can directly use the sensor_number as app.T.sensor_number, if T is accessible and it contains sensor_number as a column.

[Jeet Shetty]

yes , it still shows the same error "

Unrecognized method, property, or field"

[Jeet Shetty]

app.T = table(sensor_number, x_coordinate, y_coordinate);

that is the Code for table "T"

  app.sensor_table = uitable(app.UIFigure, 'Data', app.T);

that is the code to add the data.

[Jeet Shetty]

i figured the plotting method as i converted every variable to a property but the method that i used to save the variables was not working . so i used the save function but this is the error that i am getting "Error using save Must be a text scalar."

[Walter Roberson]

You have to pass save() a list of character vectors or string scalars, each one representing a variable name to save or an option. The names cannot be qualified in any way. For example,

save('myfile.mat', 'app.UIFigure.Data')      %WRONG

uif_data = app.UIFigure.Data; save('Myfile.mat', 'uif_data');   %OK

[Jeet Shetty]

is it to save the Graph or to save the new values inputted into the UI table. This was the code i used to save and plot the new data

function ADDButtonPushed(app, event)
           save('app13.mat',get(app.sensor_table,'Data'))
         scatter(app.UIAxes,app.x_coordinate, app.y_coordinate);

i tried the code you suggested, but i got this as an error "Unrecognized method, property, or field 'Data' for class 'matlab.ui.Figure'."