How to plot real time values in matlab guide

I have data coming from arduino through serial port and I need to plot these values in matlab guide having axes and pushbutton. How can i do this??

the following code gives the real time plot in matlab....

how to modify the code in order that i can use it in pushbutton function in matlab guide.

thnx and regards sagarvs

    serialPort = 'COM8';
    serialObject = serial(serialPort);
    fopen(serialObject);

    fprintf(serialObject,'SYSTEM:REMOTE');

    time = now;
    pressure = 0;

    figureHandle = figure('NumberTitle','off',...
        'Name','Pressure Characteristics',...
        'Color',[0 0 0],'Visible','off');

    axesHandle = axes('Parent',figureHandle,...
        'YGrid','on',...
        'YColor',[0.9725 0.9725 0.9725],...
        'XGrid','on',...
        'XColor',[0.9725 0.9725 0.9725],...
        'Color',[0 0 0]);

    hold on;

    plotHandle = plot(axesHandle,time,pressure,'Marker','.','LineWidth',1  ...
                      ,'Color',[0 1 0]);

    xlim(axesHandle,[min(time) max(time+0.001)]);

    xlabel('Time','FontWeight','bold','FontSize',14,'Color',[1 1 0]);

    ylabel('Pressure in bar','FontWeight','bold','FontSize',14,'Color',[1 1 0]);

    title('Pressure Characteristics','FontSize',15,'Color',[1 1 0]);

    stopTime = '10/07 21:53';
    timeInterval = 0.005;

    count = 1;

    while ~isequal(datestr(now,'mm/DD HH:MM'),stopTime)
        time(count) = datenum(clock); 
        % To measure current the command is MEASURE:CURRENT:DC?
        fprintf(serialObject,'MEASURE:PRESSURE:DC?'); 
        pressure(count) = fscanf(serialObject,'%f');  %#ok<SAGROW>
        set(plotHandle,'YData',pressure,'XData',time);
        set(figureHandle,'Visible','on');
        datetick('x','mm/DD HH:MM');

        pause(timeInterval);
        count = count +1;
    end

    fprintf(serialObject,'SYSTEM:LOCAL');

    fclose(serialObject);
    delete(serialObject);
    clear serialObject;

[Image Analyst]

Is there some problem with it? If it's not plotting until the loop is finished, put a "drawnow" command inside the loop.

To learn how to format your code, so we can read it, read this.

[SAGAR V]

The code presented above works fine when i use it directly in editor window and run it.

But i want to use in push button function inside the code obtained by the guide GUI so that real time graph is obtained in the axes defined in the GUI.

Can you please help me to implement this one.

[per isakson]

One approach:

• convert the code to a function (script is also possible)
• call the the function interactively to make sure it works
• call that function from your "push button function"

Answer 1

[Arash Asgarinejad]

I have the same question! Looks like we found our real-time plotting code from the same place, I have almost exactly the same code. I saved my code in a function, and when I call the function from my "push button function," it opens the real-time plot in a new window, instead of plotting it in my axes within the GUI. How can I make it so it plots in my GUI axes?

[Walter Roberson]

Remove the assignment to figureHandle. Replace the assignment to axesHandle with one that assigns a copy of the existing axes that you want to draw into.