How to fix a randomly generated sample in Matlab after making some changes to the code?

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Summer 2015-8-7

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https://ww2.mathworks.cn/matlabcentral/answers/232818-how-to-fix-a-randomly-generated-sample-in-matlab-after-making-some-changes-to-the-code

评论： Summer 2015-8-9

I need to have the same sample (same data points) that was generated from a large set of data in order to make some comparisons as I vary some conditions or parameters. However, the sample changes after each Matlab run. My current sampling is based on the use of "randperm" or sampling without replacement.

Any help would e greatly appreciated. Thanks.

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Answer 1

Stephen23 2015-8-7

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https://ww2.mathworks.cn/matlabcentral/answers/232818-how-to-fix-a-randomly-generated-sample-in-matlab-after-making-some-changes-to-the-code#answer_188612

编辑：Stephen23 2015-8-7

在 MATLAB Online 中打开

You can use rng to control the random number generation, for example (from that link):

s = rng;
x = rand(1,5)
x =
    0.8147    0.9058    0.1270    0.9134    0.6324
rng(s);
y = rand(1,5)
y =
    0.8147    0.9058    0.1270    0.9134    0.6324