MATCH                   Value Matching
ORDER                   Ordering Permutation
aggregate.zoo           Compute Summary Statistics of zoo Objects
as.zoo                  Coercion from and to zoo
coredata                Extracting/Replacing the Core Data of Objects
frequency<-             Replacing the Index of Objects
index                   Extracting/Replacing the Index of Objects
is.regular              Check Regularity of a Series
lag.zoo                 Lags and Differences of zoo Objects
make.par.list           Make a List from a Parameter Specification
merge.zoo               Merge Two or More zoo Objects
na.aggregate            Replace NA by Aggregation
na.approx               Replace NA by Interpolation
na.locf                 Last Observation Carried Forward
na.trim                 Trim Leading/Trailing Missing Observations
plot.zoo                Plotting zoo Objects
read.zoo                Reading and Writing zoo Series
rollapply               Apply Rolling Functions
rollmean                Rolling Means/Maximums/Medians
window.zoo              Extract/Replacing the Time Windows of Objects
xblocks                 Plot contiguous blocks along x axis.
xyplot.zoo              Plot zoo Series with Lattice
yearmon                 An Index Class for Monthly Data
yearqtr                 An Index Class for Quarterly Data
zoo                     Z's Ordered Observations
zooreg                  Regular zoo Series
