Plot of binary data

Hello,

I want to plot a set of binary values such that each binary value will be shown for 50 seconds. I tried like this but was unable to get the pulse signal of binary values(0 and 1). binary =[1 1 0 1 0 0 1 0];assume this is my binary data

    for l=1:1:length(binary)
        for t=i:1:i+50
         plot(t,binary(l),'-r');
         ylim([-2 2]);
        end
        i=i+1;
     end 
can someone suggest in plotting this binary data(as I want to plot the data in real time).
Thank you.

[Henric Rydén]

i is not defined

Answer 1

[Henric Rydén]

If you want to show each value in binary for 50 seconds

binary =[1 1 0 1 0 0 1 0];
figure;
for idx = 1 : length(binary)
stem(0,binary(idx));
xlim([-1 1]);
ylim([0 1.5]);
title(['Binary (' num2str(idx) ')']);
drawnow;
pause(50);
end

[Gova ReDDy]

Sorry, if I didn't explained it correctly.Here, I am explaining again clearly of what I am interested to do.

Matlab will be receiving characters through serial port.Each time the received character has to be converted to integer and then to binary and plotted them.

The plot should show all the 8bits of the converted binary data such that the each binary bit should be shown for 50ms and then the next bit for the next consecuitve 50ms and so on untill the end of 8bit data. When a new data is received it the plot should be showing the newly obtained 8bit data where the time axis should be continuous(followed with ) to the last time value.

[Henric Rydén]

I'm not sure if I understand correctly, I think you are mixing bytes with bits . Assuming you want to show the latest byte in a continously growing vector for 50 ms:

binary =[1 1 0 1 0 0 1 0];
figure;
acquiring = true;
while acquiring
stem(1:8,binary(end-7:end));
xlim([0.5 8.5]);
ylim([0 1.5]);
title(['Latest byte of data']);
drawnow;
pause(.05);
end

As I don't have the code for acquiring the data,I assume that you are simply appending binary. You should adjust the while statement to trigger on new acquisitions.

[Gova ReDDy]

Thanks.Can I know how to show the binary plot as square pulse as shown in the below figure instead of stem representation.

[Henric Rydén]

Sure! There are many ways to do this, but replace stem with bar and you're halfway there:

bar(1:8,binary(end-7:end),'BarWidth',1);

If you want something more similar to what you've drawn, you should use line . But you should center the pulses over the values to avoid confusion.

stem is a more correct way to represent the data, since values are not defined between integers.