Extract data at regular intervals

2013 6 21
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更新时间：2020 7 23
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Hi There,
I have 2 columns of data, time and concentration. The time data are at intervals of about 5 seconds and there is a corresponding concentration measurement at each time. There are about 20,000 time measurements and I want to reduce this to a more manageable amount. How can I obtain say every 10th time x concentration value?
Thanks

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Wayne King
Wayne King 2013-6-21
编辑：Wayne King 2013-6-21

1 个投票

Are you asking for just
X = ones(2e4,2);
Y = X(1:10:end,:);
Y is a two-column matrix containing every 10-th measurement (or measurements taken every 50 seconds).

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