Real time data in MATLAB

I have a piece of code that collects data from a hardware. I am trying to display the data real time. The hardware gives data every 1/512 sec. But plotting the data makes the system really slow. Is there a way to plot real time data using multithreading or multiprocessing, such that the data rate is not affected plot is remains real time.

Answer 1

[Walter Roberson]

Well, not really. But some ways of collecting data are more efficient than others. How are you reading the data at present?

[rahul manocha]

I have a .dll library provided by the hardware vendor. I callib function to acquire data. It runs perfectly when I dont plot. But when I create a handle for a plot and update the handle everytime new data is acquired, it takes around 10sec for getting 1sec of data.

set(Hraw,'YData',raw);
axis(hr,[j1 j1+1023 -200 300]);
drawnow;

if(rem(Fraw,1024)==0)
      j1=j1+1024;
 end

here raw is data acquired. Hraw is handle to a plot and I showing only 1024 readings at a time

[Walter Roberson]

Is "raw" the data that was acquired in that instance, or is it all the accumulated data since the beginning? Is it really required to update the display 512 times per second?