zoo v0.9-9


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by Achim Zeileis

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 with ts and base R by providing methods to extend standard generics.

Functions in zoo

Name Description
rollmean Rolling Means/Maximums/Medians
MATCH Value Matching
plot.zoo Plotting zoo Objects
as.Date.numeric Date Conversion Functions from Numeric, Integer and ts Objects
coredata Extracting/Replacing the Core Data of Objects
index Extracting/Replacing the Index of Objects
zoo Z's Ordered Observations
merge.zoo Merge Two or More zoo Objects
lag.zoo Lags and Differences of zoo Objects
yearqtr An Index Class for Quaterly Data
is.regular Check Regularity of a Series
yearmon An Index Class for Monthly Data
rapply Apply Rolling Functions
na.approx Replace NA by Interpolation
aggregate.zoo Compute Summary Statistics of zoo Objects
as.zoo Coercion from and to zoo
na.locf Last Observation Carried Forward
window.zoo Extract/Replacing the Time Windows of Objects
zooreg Regular zoo Series
ORDER Ordering Permutation
frequency<- Replacing the Index of Objects
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Date 2004-04-27
License GPL
Packaged Wed Apr 27 01:08:54 2005; zeileis

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