# zoo v1.7-10

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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.trim | Trim Leading/Trailing Missing Observations | |

na.approx | Replace NA by Interpolation | |

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

yearmon | An Index Class for Monthly Data | |

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

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

rollmean | Rolling Means/Maximums/Medians | |

MATCH | Value Matching | |

rollapply | Apply Rolling Functions | |

read.zoo | Reading and Writing zoo Series | |

frequency<- | Replacing the Index of Objects | |

is.regular | Check Regularity of a Series | |

xblocks | Plot contiguous blocks along x axis. | |

zooreg | Regular zoo Series | |

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

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

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

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

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

as.zoo | Coercion from and to zoo | |

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

na.locf | Last Observation Carried Forward | |

yearqtr | An Index Class for Quarterly Data | |

index | Extracting/Replacing the Index of Objects | |

xyplot.zoo | Plot zoo Series with Lattice | |

zoo | Z's Ordered Observations | |

ORDER | Ordering Permutation | |

plot.zoo | Plotting zoo Objects | |

na.aggregate | Replace NA by Aggregation | |

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## Last month downloads

## Details

Date | 2013-06-11 |

License | GPL-2 |

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

Packaged | 2013-06-10 21:04:04 UTC; zeileis |

NeedsCompilation | yes |

Repository | CRAN |

Date/Publication | 2013-06-14 22:39:25 |

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 (>= 0.18-1) , utils |

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

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