xts (version 0.14.1)

coredata.xts: Extract/Replace Core Data of an xts Object

Description

Mechanism to extract and replace the core data of an xts object.

Usage

# S3 method for xts
coredata(x, fmt = FALSE, ...)
xcoredata(x, ...)
xcoredata(x) <- value

Value

Returns either a matrix object for coredata, or a list of named attributes.

The replacement functions are called for their side-effects.

Arguments

x

An xts object.

fmt

Should the rownames be formated using tformat()? Alternatively a date/time string to be passed to format(). See details.

...

Unused.

value

Non-core attributes to assign.

Author

Jeffrey A. Ryan

Details

Extract coredata of an xts object - removing all attributes except dim and dimnames and returning a matrix object with rownames converted from the index of the xts object.

The rownames of the result use the format specified by tformat(x) when fmt = TRUE. When fmt is a character string to be passed to format(). See strptime() for valid format strings. Setting fmt = FALSE will return the row names by simply coercing the index class to a character string in the default manner.

xcoredata() is the complement to coredata(). It returns all of the attributes normally removed by coredata(). Its purpose, along with the the replacement function xcoredata<- is primarily for developers using xts' try.xts() and reclass() functionality inside functions so the functions can take any time series class as an input and return the same time series class.

See Also

coredata(), xtsAttributes()

Examples

data(sample_matrix)
x <- as.xts(sample_matrix, myattr=100)
coredata(x)
xcoredata(x)