zoo v1.4-0


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

Functions in zoo

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

Last month downloads


Date 2007-10-10
LazyLoad yes
License GPL
URL http://R-Forge.R-project.org/projects/zoo/
Packaged Fri Oct 12 17:10:11 2007; zeileis

Include our badge in your README