Error message using timer

Hi,

Im having issues with my timers giving lots of error messages when being runned.

Im using the timer to plot a capture of an image from a camera to get a live stream of the camera.

I also want to plot the image profiles using a secon timer. They can use the same timer, but im not sure its possible.

Any idea what the issue is?

Im getting the following error;

The state of warning 'MATLAB:JavaEDTAutoDelegation' is 'off'.
Error while evaluating TimerFcn for timer 'timer-3' 

Incorrect dimensions for matrix multiplication. Check that the number of columns in the first matrix matches the number of rows in the second matrix. To perform elementwise multiplication, use '.*'.
Error while evaluating TimerFcn for timer 'timer-3' 

Incorrect dimensions for matrix multiplication. Check that the number of columns in the first matrix matches the number of rows in the second matrix. To perform elementwise multiplication, use '.*'.
Error while evaluating TimerFcn for timer 'timer-3' 

Incorrect dimensions for matrix multiplication. Check that the number of columns in the first matrix matches the number of rows in the second matrix. To perform elementwise multiplication, use '.*'.
Error while evaluating TimerFcn for timer 'timer-3' 

Incorrect dimensions for matrix multiplication. Check that the number of columns in the first matrix matches the number of rows in the second matrix. To perform elementwise multiplication, use '.*'.
Error while evaluating TimerFcn for timer 'timer-3' 

Incorrect dimensions for matrix multiplication. Check that the number of columns in the first matrix matches the number of rows in the second matrix. To perform elementwise multiplication, use '.*'.
Error while evaluating TimerFcn for timer 'timer-3' 

My timer code:

% timer for plotting camera image
        function CreateImageTimer(app)
            app.timerImage = timer;
            app.timerImage.StartDelay=1;
            %app.timerImage.busymode='queue';
            app.timerImage.ExecutionMode='fixedSpacing'; % 'fixedDelay'; %
            app.timerImage.Period = 0.02;
            app.timerImage.TimerFcn = @(~, ~)captureImage(app);
            app.timerImage.StopFcn = @(~, ~)CleanUpImageTimer(app);
        end % end function
        
        function CleanUpImageTimer(app)
            try
                delete(app.timerImage)
            catch
                disp('error cleanup timer')
            end
        end % end fucntion
        
        % timer for plotting camera image
        function CreatePlotTimer(app)
            app.timerPlot = timer;
            app.timerPlot.StartDelay=2;
            %app.timerPlot.busymode='queue';
            app.timerPlot.ExecutionMode='fixedSpacing'; % 'fixedDelay'; %
            app.timerPlot.Period = 0.1;
            app.timerPlot.TimerFcn = @(~, ~)updateImageprofile(app);
            app.timerPlot.StopFcn = @(~, ~)CleanUpImageTimer(app);
        end % end function

[Jan]

The problems occur inside captureImage() or updateImageprofile(), but you do not show us the correspodning code.

[Happy PhD]

Oh, I see. I didn't think it was the issue.

Attaching my code.

Thanks!

[Jan]

This is a compiled application. I cannot see the source code.

[Happy PhD]

I see, lets try again,..

Answer 1

[Jan]

Incorrect dimensions for matrix multiplication. Check that the number of columns in
the first matrix matches the number of rows in the second matrix.
To perform elementwise multiplication, use '.*'.
Error while evaluating TimerFcn for timer 'timer-3' 

The only matrix multiplcation I see is:

% function updateimageprofile(app,imagefile)
app.ProfileAxes_x.XTickLabel=[0:0.2:1].*XL*app.angularSize;

What is the value of app.angularSize ?

[Happy PhD]

I don't know, it should just be a number. I can't check because when I run the program and try to debugg it, I get into a endless loop of timer-7 error print-outs and I can't quit it unless I terminate MATLAB via task manager. Cntrl C doesn't work to end it. I decided to start from the beginning and rewritten the code completely instead, taking mini steps and clean-write the code a bit. Hopefully i won't get the same issue. I honestly thought it was a timer issue and not the code for plotting because all that code is suppose to do is plot the intensity profiles of the object I have on the live feed of the camera. Thanks for trying to help.

[Jan]

You can simply insert an output to check the value of the variable before the failing line:

disp(app.angularSize)