Function Sort to find smallest value in a Column?

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Alessandro 2016-2-25

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https://ww2.mathworks.cn/matlabcentral/answers/269976-function-sort-to-find-smallest-value-in-a-column

评论： dpb 2016-2-25

I'm trying to find the five smallest value corresponding to their exact date from this weekly time series. What I wrote is the following:

tsStocks=fints(DATE, SP500)
Five_smallest_Value=sort(tsStocks,1,'ascend')

And i get this error:

Undefined function 'sort' for input arguments of type 'fints'.

Anyone able to tell me the right way to find them?

Thanks in advance.

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Answer 1

dpb 2016-2-25

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https://ww2.mathworks.cn/matlabcentral/answers/269976-function-sort-to-find-smallest-value-in-a-column#answer_211213

Don't have Toolbox here so can't try it, but looks like you'll want the sortfts function to deal with a FTSOBJ

See <sortfts>

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Alessandro 2016-2-25

Now at least I don't get the error as before, but sortfts only help me to sort the date from the oldest to the most recent and not, as I would like, to sort the values from the bigger to the smaller or inverse. Thanks for the help.

dpb 2016-2-25

在 MATLAB Online 中打开

From the above doc --

Arguments
tsobj
Financial time series object.
flag
(Optional) Sort order:
flag = 1; increasing order (default)
flag = -1; decreasing order

Of course, even if it didn't have the flag optional argument, simply reversing the increasing order after sorting will produce the decreasing order vector.

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