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zoo (version 1.8-8)
S3 Infrastructure for Regular and Irregular Time Series (Z's
Ordered Observations)
Description
An S3 class with methods for totally ordered indexed
observations. It is particularly aimed at irregular time series
of numeric vectors/matrices and factors. zoo's key design goals
are independence of a particular index/date/time class and
consistency with ts and base R by providing methods to extend
standard generics.