Trim NAs from Time Series
Trim NAs from the start and end of a time series object.
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A time series matrix or an object of class TSdata.
If FALSE then beginning NAs are not trimmed.
If FALSE then ending NAs are not trimmed.
Trim NAs from the ends of a time series object. Observations in a given period for all series are dropped if any one contains an NA.
A time series object which is windowed to the subset of data which is not NAs (usually the available data).