data.frame {aion}

Coerce to a Data Frame

Description

Coerce to a Data Frame

Usage

## S4 method for signature 'TimeSeries'
as.data.frame(x, ..., calendar = NULL)

Arguments

x

A TimeSeries object.

...

Further parameters to be passed to data.frame().

calendar

A TimeScale object specifying the target calendar (see calendar()). If NULL (the default), rata die are returned.

Value

A long data.frame with the following columns:

time

The (decimal) years at which the time series was sampled.

series

The name of the time series.

variable

The name of the variables.

value

The observed value.

Author(s)

N. Frerebeau

See Also

Other time series tools: series(), span(), start(), time(), window()

Examples

## Create time-series of 20 observations

## Univariate
## Sampled every years starting from 1029 BCE
(X <- series(rnorm(30), time = 1029:1000, calendar = BCE()))

## Terminal and sampling times (returns rata die)
start(X)
end(X)
time(X)
span(X)

## Multivariate
## Sampled every century starting from 1000 CE
(Y <- series(matrix(rnorm(90), 30, 3), time = 1000:1029, calendar = CE()))

## Terminal and sampling times (returns Gregorian Common Era years)
start(Y, calendar = CE())
end(Y, calendar = CE())
time(Y, calendar = CE())
span(Y, calendar = CE())

## Coerce to data frame
df <- as.data.frame(Y, calendar = BP())
head(df)