Determine whether a column in a Table contains time data

How can I determine whether a column in a Table is a time vector? In addition, how can I ensure that all rows in this column have the same time series format?

回答 (1 件)

Iddo Weiner
Iddo Weiner 2017 年 2 月 2 日

0 投票

Please define "time vector" - do you mean that the numbers should simply be monotonically increasing? or do you also have a certain "time format" / "time pattern" you're looking for ? If it's the first option, the solution is simple enough:
function out = is_monotonically_increasing(vector)
if sum (vector(2:end) - vector(1:end-1) <= 0) > 0
Out = 0;
else
Out = 1;
end
end
If you need something more specific please describe more thoroughly

3 件のコメント

Walter Roberson
Walter Roberson 2017 年 2 月 3 日
That test could be optimized to
Out = all(diff(vector) > 0);
Walter Roberson
Walter Roberson 2017 年 2 月 3 日
Or using built-in functions:
Out = issorted(vector);
Iddo Weiner
Iddo Weiner 2017 年 2 月 4 日
Absolutely! Aniruddha - are you there? does this help? Or do you have different specifications?

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2017 年 2 月 2 日

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2021 年 8 月 20 日

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