# zoo v1.7-14

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## S3 Infrastructure for Regular and Irregular Time Series (Z's Ordered Observations)

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.

## Functions in zoo

Name | Description | |

MATCH | Value Matching | |

ggplot2.zoo | Convenience Functions for Plotting zoo Objects with ggplot2 | |

index | Extracting/Replacing the Index of Objects | |

frequency<- | Replacing the Index of Objects | |

coredata | Extracting/Replacing the Core Data of Objects | |

is.regular | Check Regularity of a Series | |

ORDER | Ordering Permutation | |

lag.zoo | Lags and Differences of zoo Objects | |

na.trim | Trim Leading/Trailing Missing Observations | |

merge.zoo | Merge Two or More zoo Objects | |

na.aggregate | Replace NA by Aggregation | |

na.StructTS | Fill NA or specified positions. | |

na.locf | Last Observation Carried Forward | |

as.zoo | Coercion from and to zoo | |

read.zoo | Reading and Writing zoo Series | |

plot.zoo | Plotting zoo Objects | |

na.fill | Fill NA or specified positions. | |

aggregate.zoo | Compute Summary Statistics of zoo Objects | |

na.approx | Replace NA by Interpolation | |

xblocks | Plot contiguous blocks along x axis. | |

window.zoo | Extract/Replacing the Time Windows of Objects | |

yearqtr | An Index Class for Quarterly Data | |

zoo | Z's Ordered Observations | |

xyplot.zoo | Plot zoo Series with Lattice | |

zooreg | Regular zoo Series | |

yearmon | An Index Class for Monthly Data | |

rollmean | Rolling Means/Maximums/Medians/Sums | |

rollapply | Apply Rolling Functions | |

make.par.list | Make a List from a Parameter Specification | |

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## Last month downloads

## Details

Date | 2016-12-16 |

License | GPL-2 | GPL-3 |

URL | http://zoo.R-Forge.R-project.org/ |

NeedsCompilation | yes |

Packaged | 2016-12-16 20:17:55 UTC; zeileis |

Repository | CRAN |

Date/Publication | 2016-12-19 09:38:14 |

suggests | chron , coda , DAAG , fts , ggplot2 , mondate , scales , strucchange , timeDate , timeSeries , tis , tseries , xts |

imports | graphics , grDevices , lattice (>= 0.20-27) , utils |

depends | R (>= 2.10.0) , stats |

Contributors | Achim Zeileis, Felix Andrews, G. Grothendieck, Jeffrey Ryan |

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