On Wed, Jun 30, 2010 at 4:02 PM, skan <juanp...@gmail.com> wrote: > > Hello > > I have two series (that can have with different frequencies or with missing > values). > I merge them and use na.locf, getting a zoo objet with a common index and > two core columns. > How can I add this columns getting a new zoo series? > Any other way of adding two asynchronou series? >
Try this: z <- zoo(cbind(1:3, 4:6)) z[, 1] + z[, 2] If x and y are two zoo series you can do this: x <- zoo(1:3, c(1, 2, 4)) y <- zoo(4:6, c(1, 2, 3)) x + y and it will automatically merge them when it adds them using all = FALSE; however, if you use merge explicitly then the default is all = TRUE or you can override that with merge(..., all = FALSE) so which way to go depends on what you want. You can also do left and right joins. See help(merge.zoo) ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
