zoo v1.0-1


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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
as.zoo Coercion from and to zoo
rollmean Rolling Means/Maximums/Medians
zoo Z's Ordered Observations
aggregate.zoo Compute Summary Statistics of zoo Objects
na.approx Replace NA by Interpolation
na.locf Last Observation Carried Forward
ORDER Ordering Permutation
is.regular Check Regularity of a Series
lag.zoo Lags and Differences of zoo Objects
window.zoo Extract/Replacing the Time Windows of Objects
plot.zoo Plotting zoo Objects
frequency<- Replacing the Index of Objects
MATCH Value Matching
yearqtr An Index Class for Quaterly Data
yearmon An Index Class for Monthly Data
merge.zoo Merge Two or More zoo Objects
rapply Apply Rolling Functions
zooreg Regular zoo Series
coredata Extracting/Replacing the Core Data of Objects
read.zoo Read zoo Series via read.table
as.Date.numeric Date Conversion Functions from Numeric, Integer and ts Objects
index Extracting/Replacing the Index of Objects
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Date 2005-06-21
License GPL
Packaged Wed Jun 22 13:52:22 2005; zeileis

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