selecting non-nan sections of a data series

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Binu 2020-1-30

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/502732-selecting-non-nan-sections-of-a-data-series

评论： Binu 2020-1-31

采纳的回答： Walter Roberson

test.txt

Hello,

The attached file has some nan values. I want to separate all non-nan data sections and apply low-pass filtering. Can you help me to select non-nan data sections in this txt file, so I can apply filtering for each non-nan data sections separately.

Thank you

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采纳的回答

Walter Roberson 2020-1-30

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/502732-selecting-non-nan-sections-of-a-data-series#answer_412798

在 MATLAB Online 中打开

test = load('test.txt');
mask = ~isnan(test.');
starts = strfind([0 mask], [0 1]);
stops = strfind([mask 0], [1 0]);

Now starts(K) is the index of the first non-nan in a group and stops(K) is the index of the last non-nan in the group.

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Binu 2020-1-31

Thanks Walter. It worked.

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