How to select certain rows from a data set

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Danielle Klawitter
Danielle Klawitter 2018 年 1 月 25 日
回答済み: Walter Roberson 2018 年 1 月 25 日
I have a large data set with a data point for every day of the year. I have the first column giving the day of the year (1 to 365) and the 2nd column specifying the day of the week (1 is Sunday, 2 is Monday, etc.) and the 3rd column is the data. I want to analyze the data using only Mondays, Wednesdays and Fridays, aka rows where the 2nd column is 2, 4, or 6. How can I do this?

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Walter Roberson
Walter Roberson 2018 年 1 月 25 日
mask = ismember(YourData(:,2), [2, 4, 6]);
selected_data = YourData(mask, :);

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