Generic functions for extracting the core data contained in a (more complex) object and replacing it.
coredata(x, ...) coredata(x) <- value
further arguments passed to methods.
a suitable value object for use with
zoo, there are currently
coredata methods for time series
objects of class
"irts", all of
which strip off the index/time attributes and return only the observations.
The are also corresponding replacement methods for these classes.
suppressWarnings(RNGversion("3.5.0")) set.seed(1) 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
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