# zoo v1.7-9

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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 | |

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

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

xblocks | Plot contiguous blocks along x axis. | |

na.aggregate | Replace NA by Aggregation | |

rollapply | Apply Rolling Functions | |

as.zoo | Coercion from and to zoo | |

zoo | Z's Ordered Observations | |

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

rollmean | Rolling Means/Maximums/Medians | |

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

plot.zoo | Plotting zoo Objects | |

na.locf | Last Observation Carried Forward | |

zooreg | Regular zoo Series | |

is.regular | Check Regularity of a Series | |

na.approx | Replace NA by Interpolation | |

ORDER | Ordering Permutation | |

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

read.zoo | Reading and Writing zoo Series | |

frequency<- | Replacing the Index of Objects | |

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

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

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

yearqtr | An Index Class for Quarterly Data | |

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

MATCH | Value Matching | |

xyplot.zoo | Plot zoo Series with Lattice | |

yearmon | An Index Class for Monthly Data | |

index | Extracting/Replacing the Index of Objects | |

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

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## Last month downloads

## Details

Date | 2012-11-04 |

License | GPL-2 |

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

Packaged | 2012-11-04 09:14:19 UTC; zeileis |

Repository | CRAN |

Date/Publication | 2012-11-04 16:28:51 |

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

suggests | chron , coda , DAAG , fts , ggplot2 , its , mondate , 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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