x <- xts(1:10, Sys.Date()+1:10)
str(x)
merge(x,x)
rbind(x,x)
rbind(x[1:5],x[6:10])
c(x,x)
# this also works on non-unique index values
x <- xts(rep(1,5), Sys.Date()+c(1,2,2,2,3))
y <- xts(rep(2,3), Sys.Date()+c(1,2,3))
# overlapping indexes are appended
rbind(x,y)
rbind(y,x)
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