Dear list members, what is the reason that one obviously can't do arithmetic operations on zoo members with different index positions?
> require(zoo) > z <- zoo(c(1,1,1),order.by=c(1,2,3)) > z 1 2 3 1 1 1 > z[1] + z[1] 1 2 > z[1:2] + z[1:2] 1 2 2 2 > z[1] + z[2] Data: numeric(0) Index: numeric(0) ______________________________________________ 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.
