zoo v1.6-4


Monthly downloads



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

Functions in zoo

Name Description
na.locf Last Observation Carried Forward
frequency<- Replacing the Index of Objects
as.zoo Coercion from and to zoo
coredata Extracting/Replacing the Core Data of Objects
yearmon An Index Class for Monthly Data
merge.zoo Merge Two or More zoo Objects
window.zoo Extract/Replacing the Time Windows of Objects
na.approx Replace NA by Interpolation
rollmean Rolling Means/Maximums/Medians
zooreg Regular zoo Series
ORDER Ordering Permutation
xblocks Plot contiguous blocks along x axis.
na.aggregate Replace NA by Aggregation
make.par.list Make a List from a Parameter Specification
xyplot.zoo Plot zoo Series with Lattice
plot.zoo Plotting zoo Objects
is.regular Check Regularity of a Series
MATCH Value Matching
aggregate.zoo Compute Summary Statistics of zoo Objects
zoo Z's Ordered Observations
index Extracting/Replacing the Index of Objects
read.zoo Reading and Writing zoo Series
rollapply Apply Rolling Functions
yearqtr An Index Class for Quarterly Data
na.trim Trim Leading/Trailing Missing Observations
lag.zoo Lags and Differences of zoo Objects
No Results!

Last month downloads


Date 2010-07-09
LazyLoad yes
License GPL-2
URL http://R-Forge.R-project.org/projects/zoo/
Packaged 2010-07-09 13:36:21 UTC; zeileis
Repository CRAN
Date/Publication 2010-07-09 13:47:57

Include our badge in your README