xts (version 0.14.1)

as.xts.Date: Convert Objects To and From xts

Description

Conversion S3 methods to coerce data objects of arbitrary classes to xts and back, without losing any attributes of the original format.

Usage

# S3 method for Date
as.xts(x, ...)
# S3 method for POSIXt
as.xts(x, ...)
# S3 method for data.frame
as.xts(
  x,
  order.by,
  dateFormat = "POSIXct",
  frequency = NULL,
  ...,
  .RECLASS = FALSE
)
# S3 method for irts
as.xts(x, order.by, frequency = NULL, ..., .RECLASS = FALSE)
# S3 method for matrix
as.xts(
  x,
  order.by,
  dateFormat = "POSIXct",
  frequency = NULL,
  ...,
  .RECLASS = FALSE
)
# S3 method for timeDate
as.xts(x, ...)
# S3 method for timeSeries
as.xts(
  x,
  dateFormat = "POSIXct",
  FinCenter,
  recordIDs,
  title,
  documentation,
  ...,
  .RECLASS = FALSE
)
# S3 method for ts
as.xts(x, dateFormat, ..., .RECLASS = FALSE)
as.xts(x, ...)
xtsible(x)
# S3 method for yearmon
as.xts(x, ...)
# S3 method for yearqtr
as.xts(x, ...)
# S3 method for zoo
as.xts(x, order.by = index(x), frequency = NULL, ..., .RECLASS = FALSE)

Value

An S3 object of class xts.

Arguments

x

Data object to convert. See details for supported types.

...

Additional parameters or attributes.

order.by, frequency

See zoo help.

dateFormat

What class should the dates be converted to?

.RECLASS

Should the conversion be reversible via reclass()?

FinCenter, recordIDs, title, documentation

See timeSeries help.

Author

Jeffrey A. Ryan

Details

A simple and reliable way to convert many different objects into a uniform format for use within R.

as.xts() can convert objects of the following classes into an xts object: object: timeSeries, ts, matrix, data.frame, and zoo. xtsible() safely checks whether an object can be converted to an xts object.

Additional name = value pairs may be passed to the function to be added to the new object. A special print.xts() method ensures the attributes are hidden from view, but will be available via R's standard attr() function, as well as the xtsAttributes() function.

When .RECLASS = TRUE, the returned xts object internally preserves all relevant attribute/slot data from the input x. This allows for temporary conversion to xts in order to use zoo and xts compatible methods. See reclass() for details.

See Also

xts(), reclass(), zoo()

Examples

if (FALSE) {
# timeSeries
library(timeSeries)
x <- timeSeries(1:10, 1:10)

str(as.xts(x))
str(reclass(as.xts(x)))
str(try.xts(x))
str(reclass(try.xts(x)))
}