# S3 Infrastructure for Regular and Irregular Time Series (Z's Ordered Observations)

## Documentation for package ‘zoo’ version 1.8-15

- DESCRIPTION file.
- User guides, package vignettes and other documentation.
- Code demos. Use demo() to run them.
- Package NEWS.

## Help Pages

A B C D E F G H I L M N O P Q R S T U W X Y Z misc

## -- A --

aggregate.zoo | Compute Summary Statistics of zoo Objects
as.character.yearmon | An Index Class for Monthly Data
as.character.yearqtr | An Index Class for Quarterly Data
as.data.frame.yearmon | An Index Class for Monthly Data
as.data.frame.yearqtr | An Index Class for Quarterly Data
as.data.frame.zoo | Coercion from and to zoo
as.Date | An Index Class for Monthly Data
as.Date.numeric | An Index Class for Monthly Data
as.Date.ts | An Index Class for Monthly Data
as.Date.yearmon | An Index Class for Monthly Data
as.Date.yearqtr | An Index Class for Quarterly Data
as.list.ts | Coercion from and to zoo
as.list.yearmon | An Index Class for Monthly Data
as.list.yearqtr | An Index Class for Quarterly Data
as.list.zoo | Coercion from and to zoo
as.matrix.zoo | Coercion from and to zoo
as.numeric.yearmon | An Index Class for Monthly Data
as.numeric.yearqtr | An Index Class for Quarterly Data
as.POSIXct.yearmon | An Index Class for Monthly Data
as.POSIXct.yearqtr | An Index Class for Quarterly Data
as.POSIXlt.yearmon | An Index Class for Monthly Data
as.POSIXlt.yearqtr | An Index Class for Quarterly Data
as.ts.zoo | Coercion from and to zoo
as.ts.zooreg | Regular zoo Series
as.vector.zoo | Coercion from and to zoo
as.yearmon | An Index Class for Monthly Data
as.yearmon.character | An Index Class for Monthly Data
as.yearmon.Date | An Index Class for Monthly Data
as.yearmon.date | An Index Class for Monthly Data
as.yearmon.dates | An Index Class for Monthly Data
as.yearmon.default | An Index Class for Monthly Data
as.yearmon.factor | An Index Class for Monthly Data
as.yearmon.integer | An Index Class for Monthly Data
as.yearmon.jul | An Index Class for Monthly Data
as.yearmon.numeric | An Index Class for Monthly Data
as.yearmon.POSIXt | An Index Class for Monthly Data
as.yearmon.timeDate | An Index Class for Monthly Data
as.yearqtr | An Index Class for Quarterly Data
as.yearqtr.character | An Index Class for Quarterly Data
as.yearqtr.Date | An Index Class for Quarterly Data
as.yearqtr.date | An Index Class for Quarterly Data
as.yearqtr.dates | An Index Class for Quarterly Data
as.yearqtr.default | An Index Class for Quarterly Data
as.yearqtr.factor | An Index Class for Quarterly Data
as.yearqtr.integer | An Index Class for Quarterly Data
as.yearqtr.jul | An Index Class for Quarterly Data
as.yearqtr.numeric | An Index Class for Quarterly Data
as.yearqtr.POSIXt | An Index Class for Quarterly Data
as.yearqtr.timeDate | An Index Class for Quarterly Data
as.yearqtr.yearqtr | An Index Class for Quarterly Data
as.zoo | Coercion from and to zoo
as.zoo.data.frame | Coercion from and to zoo
as.zoo.default | Coercion from and to zoo
as.zoo.factor | Z's Ordered Observations
as.zoo.fts | Coercion from and to zoo
as.zoo.irts | Coercion from and to zoo
as.zoo.its | Coercion from and to zoo
as.zoo.matrix | Coercion from and to zoo
as.zoo.mcmc | Coercion from and to zoo
as.zoo.tis | Coercion from and to zoo
as.zoo.ts | Coercion from and to zoo
as.zoo.xts | Coercion from and to zoo
as.zoo.zoo | Coercion from and to zoo
as.zoo.zooreg | Regular zoo Series
as.zooreg | Regular zoo Series
as.zooreg.default | Regular zoo Series
as.zooreg.its | Regular zoo Series
as.zooreg.ts | Regular zoo Series
as.zooreg.xts | Regular zoo Series
as.zooreg.zoo | Regular zoo Series
autoplot.zoo | Convenience Functions for Plotting zoo Objects with ggplot2

## -- B --

barplot.zoo | Plotting zoo Objects
boxplot.zoo | Plotting zoo Objects

## -- C --

c.yearmon | An Index Class for Monthly Data
c.yearqtr | An Index Class for Quarterly Data
c.zoo | Merge Two or More zoo Objects
cbind.zoo | Merge Two or More zoo Objects
coredata | Extracting/Replacing the Core Data of Objects
coredata.default | Extracting/Replacing the Core Data of Objects
coredata.irts | Extracting/Replacing the Core Data of Objects
coredata.its | Extracting/Replacing the Core Data of Objects
coredata.ts | Extracting/Replacing the Core Data of Objects
coredata.zoo | Extracting/Replacing the Core Data of Objects
coredata<- | Extracting/Replacing the Core Data of Objects
coredata<-.irts | Extracting/Replacing the Core Data of Objects
coredata<-.its | Extracting/Replacing the Core Data of Objects
coredata<-.ts | Extracting/Replacing the Core Data of Objects
coredata<-.zoo | Extracting/Replacing the Core Data of Objects
cummax.zoo | Z's Ordered Observations
cummin.zoo | Z's Ordered Observations
cumprod.zoo | Z's Ordered Observations
cumsum.zoo | Z's Ordered Observations
cycle.yearmon | An Index Class for Monthly Data
cycle.yearqtr | An Index Class for Quarterly Data
cycle.zoo | Regular zoo Series
cycle.zooreg | Regular zoo Series

## -- D --

deltat.zoo | Regular zoo Series
deltat.zooreg | Regular zoo Series
diff.zoo | Lags and Differences of zoo Objects
dim<-.zoo | Z's Ordered Observations

## -- E --

end.zoo | Extracting/Replacing the Index of Objects

## -- F --

facet_free | Convenience Functions for Plotting zoo Objects with ggplot2
format.yearmon | An Index Class for Monthly Data
format.yearqtr | An Index Class for Quarterly Data
fortify.zoo | Convenience Functions for Plotting zoo Objects with ggplot2
frequency.zoo | Regular zoo Series
frequency.zooreg | Regular zoo Series
frequency<- | Replacing the Index of Objects
frequency<-.zoo | Replacing the Index of Objects
frequency<-.zooreg | Replacing the Index of Objects

## -- G --

ggplot2.zoo | Convenience Functions for Plotting zoo Objects with ggplot2

## -- H --

head.zoo | Z's Ordered Observations

## -- I --

ifelse.zoo | Z's Ordered Observations
index | Extracting/Replacing the Index of Objects
index.default | Extracting/Replacing the Index of Objects
index.ts | Extracting/Replacing the Index of Objects
index.zoo | Extracting/Replacing the Index of Objects
index2char | Z's Ordered Observations
index2char.default | Z's Ordered Observations
index2char.numeric | Z's Ordered Observations
index2char.POSIXt | Z's Ordered Observations
index<- | Extracting/Replacing the Index of Objects
index<-.zoo | Extracting/Replacing the Index of Objects
index<-.zooreg | Regular zoo Series
is.numeric.yearmon | An Index Class for Monthly Data
is.numeric.yearqtr | An Index Class for Quarterly Data
is.regular | Check Regularity of a Series
is.regular.default | Check Regularity of a Series
is.regular.ts | Check Regularity of a Series
is.regular.zoo | Check Regularity of a Series
is.regular.zooreg | Check Regularity of a Series
is.zoo | Z's Ordered Observations

## -- L --

lag.zoo | Lags and Differences of zoo Objects
lag.zooreg | Regular zoo Series
lines.zoo | Plotting zoo Objects
llines.its | Plot zoo Series with Lattice
llines.tis | Plot zoo Series with Lattice
llines.zoo | Plot zoo Series with Lattice
lpoints.its | Plot zoo Series with Lattice
lpoints.tis | Plot zoo Series with Lattice
lpoints.zoo | Plot zoo Series with Lattice
ltext.its | Plot zoo Series with Lattice
ltext.tis | Plot zoo Series with Lattice
ltext.zoo | Plot zoo Series with Lattice

## -- M --

make.par.list | Make a List from a Parameter Specification
MATCH | Value Matching
MATCH.Date | Value Matching
MATCH.default | Value Matching
MATCH.POSIXct | Value Matching
MATCH.POSIXlt | Value Matching
MATCH.timeDate | Value Matching
MATCH.times | Value Matching
MATCH.yearmon | An Index Class for Monthly Data
MATCH.yearqtr | An Index Class for Quarterly Data
mean.yearmon | An Index Class for Monthly Data
mean.yearqtr | An Index Class for Quarterly Data
mean.zoo | Z's Ordered Observations
median.zoo | Z's Ordered Observations
merge.zoo | Merge Two or More zoo Objects

## -- N --

na.aggregate | Replace NA by Aggregation
na.aggregate.default | Replace NA by Aggregation
na.approx | Replace NA by Interpolation
na.approx.default | Replace NA by Interpolation
na.approx.ts | Replace NA by Interpolation
na.approx.zoo | Replace NA by Interpolation
na.approx.zooreg | Replace NA by Interpolation
na.contiguous | Z's Ordered Observations
na.contiguous.data.frame | Z's Ordered Observations
na.contiguous.default | Z's Ordered Observations
na.contiguous.list | Z's Ordered Observations
na.contiguous.zoo | Z's Ordered Observations
na.fill | Fill NA or specified positions.
na.fill.default | Fill NA or specified positions.
na.fill.ts | Fill NA or specified positions.
na.fill.zoo | Fill NA or specified positions.
na.fill0 | Fill NA or specified positions.
na.locf | Last Observation Carried Forward
na.locf.data.frame | Last Observation Carried Forward
na.locf.default | Last Observation Carried Forward
na.locf.list | Last Observation Carried Forward
na.locf0 | Last Observation Carried Forward
na.spline | Replace NA by Interpolation
na.spline.default | Replace NA by Interpolation
na.spline.ts | Replace NA by Interpolation
na.spline.zoo | Replace NA by Interpolation
na.spline.zooreg | Replace NA by Interpolation
na.StructTS | Fill NA or specified positions.
na.StructTS.ts | Fill NA or specified positions.
na.StructTS.zoo | Fill NA or specified positions.
na.trim | Trim Leading/Trailing Missing Observations
na.trim.default | Trim Leading/Trailing Missing Observations
na.trim.ts | Trim Leading/Trailing Missing Observations
names.zoo | Z's Ordered Observations
names<-.zoo | Z's Ordered Observations

## -- O --

Ops.yearmon | An Index Class for Monthly Data
Ops.yearqtr | An Index Class for Quarterly Data
Ops.zoo | Z's Ordered Observations
ORDER | Ordering Permutation
ORDER.default | Ordering Permutation

## -- P --

panel.lines.its | Plot zoo Series with Lattice
panel.lines.tis | Plot zoo Series with Lattice
panel.lines.ts | Plot zoo Series with Lattice
panel.lines.zoo | Plot zoo Series with Lattice
panel.plot.custom | Plot zoo Series with Lattice
panel.plot.default | Plot zoo Series with Lattice
panel.points.its | Plot zoo Series with Lattice
panel.points.tis | Plot zoo Series with Lattice
panel.points.ts | Plot zoo Series with Lattice
panel.points.zoo | Plot zoo Series with Lattice
panel.polygon.its | Plot zoo Series with Lattice
panel.polygon.tis | Plot zoo Series with Lattice
panel.polygon.ts | Plot zoo Series with Lattice
panel.polygon.zoo | Plot zoo Series with Lattice
panel.rect.its | Plot zoo Series with Lattice
panel.rect.tis | Plot zoo Series with Lattice
panel.rect.ts | Plot zoo Series with Lattice
panel.rect.zoo | Plot zoo Series with Lattice
panel.segments.its | Plot zoo Series with Lattice
panel.segments.tis | Plot zoo Series with Lattice
panel.segments.ts | Plot zoo Series with Lattice
panel.segments.zoo | Plot zoo Series with Lattice
panel.text.its | Plot zoo Series with Lattice
panel.text.tis | Plot zoo Series with Lattice
panel.text.ts | Plot zoo Series with Lattice
panel.text.zoo | Plot zoo Series with Lattice
plot.zoo | Plotting zoo Objects
points.zoo | Plotting zoo Objects
print.yearmon | An Index Class for Monthly Data
print.yearqtr | An Index Class for Quarterly Data
print.zoo | Z's Ordered Observations

## -- Q --

quantile.zoo | Z's Ordered Observations

## -- R --

range.yearmon | An Index Class for Monthly Data
range.yearqtr | An Index Class for Quarterly Data
range.zoo | Z's Ordered Observations
rbind.zoo | Merge Two or More zoo Objects
read.csv.zoo | Reading and Writing zoo Series
read.csv2.zoo | Reading and Writing zoo Series
read.delim.zoo | Reading and Writing zoo Series
read.delim2.zoo | Reading and Writing zoo Series
read.table.zoo | Reading and Writing zoo Series
read.zoo | Reading and Writing zoo Series
rev.zoo | Z's Ordered Observations
rollapply | Apply Rolling Functions
rollapply.default | Apply Rolling Functions
rollapply.ts | Apply Rolling Functions
rollapply.zoo | Apply Rolling Functions
rollapplyr | Apply Rolling Functions
rollmax | Rolling Means/Maximums/Medians/Sums
rollmax.default | Rolling Means/Maximums/Medians/Sums
rollmax.ts | Rolling Means/Maximums/Medians/Sums
rollmax.zoo | Rolling Means/Maximums/Medians/Sums
rollmaxr | Rolling Means/Maximums/Medians/Sums
rollmean | Rolling Means/Maximums/Medians/Sums
rollmean.default | Rolling Means/Maximums/Medians/Sums
rollmean.ts | Rolling Means/Maximums/Medians/Sums
rollmean.zoo | Rolling Means/Maximums/Medians/Sums
rollmeanr | Rolling Means/Maximums/Medians/Sums
rollmedian | Rolling Means/Maximums/Medians/Sums
rollmedian.default | Rolling Means/Maximums/Medians/Sums
rollmedian.ts | Rolling Means/Maximums/Medians/Sums
rollmedian.zoo | Rolling Means/Maximums/Medians/Sums
rollmedianr | Rolling Means/Maximums/Medians/Sums
rollsum | Rolling Means/Maximums/Medians/Sums
rollsum.default | Rolling Means/Maximums/Medians/Sums
rollsum.ts | Rolling Means/Maximums/Medians/Sums
rollsum.zoo | Rolling Means/Maximums/Medians/Sums
rollsumr | Rolling Means/Maximums/Medians/Sums

## -- S --

scale.zoo | Z's Ordered Observations
scale_type.yearmon | Convenience Functions for Plotting zoo Objects with ggplot2
scale_type.yearqtr | Convenience Functions for Plotting zoo Objects with ggplot2
scale_x_yearmon | Convenience Functions for Plotting zoo Objects with ggplot2
scale_x_yearqtr | Convenience Functions for Plotting zoo Objects with ggplot2
scale_y_yearmon | Convenience Functions for Plotting zoo Objects with ggplot2
scale_y_yearqtr | Convenience Functions for Plotting zoo Objects with ggplot2
split.zoo | Compute Summary Statistics of zoo Objects
start.zoo | Extracting/Replacing the Index of Objects
str.zoo | Z's Ordered Observations
subset.zoo | Z's Ordered Observations
Summary.yearmon | An Index Class for Monthly Data
summary.yearmon | An Index Class for Monthly Data
Summary.yearqtr | An Index Class for Quarterly Data
summary.yearqtr | An Index Class for Quarterly Data
summary.zoo | Z's Ordered Observations
Sys.yearmon | An Index Class for Monthly Data
Sys.yearqtr | An Index Class for Quarterly Data

## -- T --

t.zoo | Z's Ordered Observations
tail.zoo | Z's Ordered Observations
time.zoo | Extracting/Replacing the Index of Objects
time<- | Extracting/Replacing the Index of Objects
time<-.zoo | Extracting/Replacing the Index of Objects
time<-.zooreg | Regular zoo Series
tinyplot.zoo | Plotting zoo Objects with tinyplot
transform.zoo | Z's Ordered Observations

## -- U --

unique.yearmon | An Index Class for Monthly Data
unique.yearqtr | An Index Class for Quarterly Data

## -- W --

window.zoo | Extract/Replacing the Time Windows of Objects
window<-.zoo | Extract/Replacing the Time Windows of Objects
with.zoo | Z's Ordered Observations
write.zoo | Reading and Writing zoo Series

## -- X --

xblocks | Plot contiguous blocks along x axis.
xblocks.default | Plot contiguous blocks along x axis.
xblocks.ts | Plot contiguous blocks along x axis.
xblocks.zoo | Plot contiguous blocks along x axis.
xtfrm.yearmon | An Index Class for Monthly Data
xtfrm.yearqtr | An Index Class for Quarterly Data
xtfrm.zoo | Z's Ordered Observations
xyplot.its | Plot zoo Series with Lattice
xyplot.tis | Plot zoo Series with Lattice
xyplot.zoo | Plot zoo Series with Lattice

## -- Y --

yearmon | An Index Class for Monthly Data
yearmon_trans | Convenience Functions for Plotting zoo Objects with ggplot2
yearqtr | An Index Class for Quarterly Data
yearqtr_trans | Convenience Functions for Plotting zoo Objects with ggplot2

## -- Z --

zoo | Z's Ordered Observations
zooreg | Regular zoo Series

## -- misc --

$.zoo | Z's Ordered Observations
$<-.zoo | Z's Ordered Observations
-.yearmon | An Index Class for Monthly Data
-.yearqtr | An Index Class for Quarterly Data
[.yearmon | An Index Class for Monthly Data
[.yearqtr | An Index Class for Quarterly Data
[.zoo | Z's Ordered Observations
[<-.zoo | Z's Ordered Observations
[[.yearmon | An Index Class for Monthly Data
[[.yearqtr | An Index Class for Quarterly Data