coredata {zoo} | R Documentation |
Generic functions for extracting the core data contained in a (more complex) object and replacing it.
coredata(x, ...) coredata(x) <- value
x |
an object. |
... |
further arguments passed to methods. |
value |
a suitable value object for use with x . |
In zoo
, there are currently coredata
methods for time series
objects of class "zoo"
, "ts"
, "its"
, "irts"
, all of
which strip off the index/time attributes and return only the observations.
The are also corresponding replacement methods for these classes.
x.date <- as.Date(paste(2003, rep(1:4, 4:1), seq(1,20,2), sep = "-")) x <- zoo(matrix(rnorm(20), ncol = 2), x.date) ## the full time series x ## and only matrix of observations coredata(x) ## change the observations coredata(x) <- matrix(1:20, ncol = 2) x