Improving speed of line plotting

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Thomas Marullo 2017-6-23

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https://ww2.mathworks.cn/matlabcentral/answers/346051-improving-speed-of-line-plotting

编辑： dpb 2017-6-24

Is there any way to improve the speed of plotting 1000 lines at once? I am drawing an animation of a wireframe building using some external data which takes 0.05 seconds to acquire. In the following function, X and Y are set up to have coordinate pairs for 1000 lines, X and Y are type 2x1000 double. The issue is that I'm getting like 3fps. Was hoping to get something like 10-15fps. I tried doing a scatter plot of just the coordinates to see how that would work and scatter is much faster, getting like 25fps but then I just have coordinate points. Need to have the connecting lines to show the building.

Just FYI, I also tried using 'plot' instead of 'line' and I get the same response.

while (true)
 clf;
 % Acquire some new coordinates (takes 0.05 seconds from data acquisition)
 X = %some new data%;
 Y = %some new data%;
 line (X,Y,'LineWidth',[1.0],'Color',[0 0 1]);
 pause(0.001);
end

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dpb 2017-6-23

编辑：dpb 2017-6-24

Yes, you can do better than calling line over and over...read the section <Animation> in the doc for starters. Probably just updating the '[X|Y]Data' properties will be what you'll want for your purposes, but be good to look over the alternatives discussed there.

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