Most memory efficient way to plot 1M lines?

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nori lam 2016-10-21

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https://ww2.mathworks.cn/matlabcentral/answers/308427-most-memory-efficient-way-to-plot-1m-lines

评论： Massimo Zanetti 2016-10-21

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I am plotting almost 1 million lines in a loop and Matlab uses over 10gb of memory.

Is there a way to reduce the memory hit but still be able to plot my lines?

Here is my code (edited to use less memory)

clear all
close all
clc
figure
hold on
xlabel('what')
ylabel('eva')
data = rand(1000);
for a = 1:1000000
    % plot
    plot(data)
end

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Adam 2016-10-21

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rand(1000)

is not a line of data, it is a 1000 * 1000 array of data. I keep making this mistake (if it was a mistake in your case) when meaning to create a vector, forgetting the default behaviour of these functions with one argument is to produce an n * n square matrx, not an n * 1 or 1 * n vector.