Skipping row data repeatedly

gopal krishan

2018 5 10

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I have a file having a sample size of 491520. I want to save every alternative 102 samples separately. For example - I want 1 to 102 but don't want 103 to 204 and so on.

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Akira Agata 2018-5-10

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% Sample data (size of 491520)
data = rand(491520,1);
idx = repelem([true;false],102);
idx = repmat(idx,ceil(491520/204),1);
idx = idx(1:size(data,1)); % Since 491520 can't be divided by 204
% Separate every alternative 102 samples
data1 = data(idx);
data2 = data(~idx);