MATCH                   Value Matching
ORDER                   Ordering Permutation
aggregate.zoo           Compute Summary Statistics of zoo Objects
as.Date.numeric         Date Conversion Functions from Numeric,
                        Integer and ts Objects
as.zoo                  Coercion from and to zoo
coredata                Extracting/Replacing the Core Data of Objects
index                   Extracting/Replacing the Index of Objects
lag.zoo                 Lags and Differences of zoo Objects
merge.zoo               Merge Two or More zoo Objects
model.frame.zoo         Model Frame for zoo Series
na.approx               Replace NA by Interpolation
na.locf                 Last Observation Carried Forward
plot.zoo                Plotting zoo Objects
window.zoo              Extract/Replacing the Time Windows of Objects
zoo                     Z's Ordered Observations
