How could I shorten the processing time of plot?

I hope to real-time process and plot the 3-D image. x,y,z are all 1*500 arraies.

plot3(x,y,z);
scatter3(x,y,z);

It takes 5ms to do image processing but 50ms to do 3D plot. It seems difficult to realize real-time display?

Are there any methods to cut down the processing time of plot.

Perhaps I could use GPU to do plot, is it effcient? Because my computer doesn't have GPU, perhaps I need to install a GPU if neccesary.

Thank you so much for your answer.

[Adam Danz]

50ms is already quite fast. How are you timing this?

When I plot 3D data with 500 coordinates and run Matlab's 'profile' function to time the execution, I find that the majority of the time is spent on overhead processes such as newplot() and clo() which prepare the figure. One way around that is by plotting the 3D coordinates once and then just replacing the x,y,z, coordinate values within the plot. Here's a demo:

% Produce initial plot (slow)
x = 1:500;
y = 1:500;
z = rand(1,500); 
ph = plot3(x,y,z);

% replace x,y,z coordinates (fast)
ph.XData = x; 
ph.YData = y; 
ph.ZData = z; 

However, using tic/toc this method still takes about 50 ms but avoids much of the overhead needed to create the figure and graphics.

[Ruixiao Li]

Thank you for your idea. I also found that creating the window costs much time. I will try your way. Thanks again.

[Adam Danz]

I'd be interested if you found a faster solution.