# zoo v1.7-13

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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 | |

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

index | Extracting/Replacing the Index of Objects | |

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

MATCH | Value Matching | |

read.zoo | Reading and Writing zoo Series | |

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

na.locf | Last Observation Carried Forward | |

na.approx | Replace NA by Interpolation | |

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

na.aggregate | Replace NA by Aggregation | |

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

zooreg | Regular zoo Series | |

is.regular | Check Regularity of a Series | |

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

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

as.zoo | Coercion from and to zoo | |

yearmon | An Index Class for Monthly Data | |

zoo | Z's Ordered Observations | |

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

yearqtr | An Index Class for Quarterly Data | |

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

plot.zoo | Plotting zoo Objects | |

rollapply | Apply Rolling Functions | |

ORDER | Ordering Permutation | |

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

xblocks | Plot contiguous blocks along x axis. | |

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

frequency<- | Replacing the Index of Objects | |

xyplot.zoo | Plot zoo Series with Lattice | |

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## Last month downloads

## Details

Date | 2016-05-03 |

License | GPL-2 | GPL-3 |

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

NeedsCompilation | yes |

Packaged | 2016-05-03 15:50:22 UTC; zeileis |

Repository | CRAN |

Date/Publication | 2016-05-03 17:52:16 |

depends | base (>= 2.10.0) , R (>= 2.10.0) , stats |

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

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

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

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