zoo v1.1-1


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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
na.locf Last Observation Carried Forward
as.zoo Coercion from and to zoo
aggregate.zoo Compute Summary Statistics of zoo Objects
merge.zoo Merge Two or More zoo Objects
rapply Apply Rolling Functions
lag.zoo Lags and Differences of zoo Objects
index Extracting/Replacing the Index of Objects
ORDER Ordering Permutation
rollmean Rolling Means/Maximums/Medians
na.trim Trim Leading/Trailing Missing Observations
frequency<- Replacing the Index of Objects
coredata Extracting/Replacing the Core Data of Objects
yearmon An Index Class for Monthly Data
na.approx Replace NA by Interpolation
plot.zoo Plotting zoo Objects
zoo Z's Ordered Observations
zooreg Regular zoo Series
window.zoo Extract/Replacing the Time Windows of Objects
MATCH Value Matching
yearqtr An Index Class for Quaterly Data
as.Date.numeric Date Conversion Functions from Numeric, Integer and ts Objects
is.regular Check Regularity of a Series
read.zoo Read zoo Series via read.table
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Date 2006-07-03
License GPL
Packaged Mon Jul 3 17:55:16 2006; zeileis

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