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can someone please explain what is lag in matlab built in function xcov ? Thanks

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Akim Mahmud
Akim Mahmud 2018-2-27
回答： Prajit T R 2018-3-1
please see above, thanks

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Prajit T R
Prajit T R 2018-3-1
[c,lags] = xcov(x,y,maxlags) where x and y are length m vectors, returns the cross-covariance sequence in a length 2*maxlags+1 vector c. lags is a vector of the lag indices where c was estimated, that is, [-maxlags:maxlags]. These indices can be useful when you wish to plot the covariance estimates. For example: stem(lags,c)

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