r - Access zoo or xts index -


i using zoo objects, buy question applies xts objects. looks me 1 column vector index. in case index vector of dates , 1 column vector data. except access dates (from index).

for example have following result:

objzoo <- structure(c(10, 20), .dim = c(2l, 1l), index = c(14788, 14789),                     class = "zoo", .dimnames = list(null, "data")) unclass(objzoo) #      data # [1,]   10 # [2,]   20 # attr(,"index") # [1] 14788 14789

i want 14789 in variable or vector, i'm not sure how access it.

from ?zoo, there 2 convenience methods access data in zoo objects:

  • coredata() returns data in zoo object
  • index() returns index

for example:

x.date <- as.date("2003-02-01") + c(1, 3, 7, 9, 14) - 1 x <- zoo(rnorm(5), x.date)  index(x) [1] "2003-02-01" "2003-02-03" "2003-02-07" "2003-02-09" "2003-02-14"  coredata(x) [1] -1.2487943  0.8911630  1.2713133 -0.1024638  0.2989194

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