I am a bit confused about the different approaches taken to recycling in plain data frames and zoo objects. When carrying out simple arithmetic, dataframe seem to recycle single arguments, zoo objects do not. Here is an example
> x <- data.frame(a=1:5*2, b=1:5*3) > x a b 1 2 3 2 4 6 3 6 9 4 8 12 5 10 15 > x$a/x$a[1] [1] 1 2 3 4 5 > x <- zoo(x) > x$a/x$a[1] 1 1 > I feel understanding this difference would lead me to a greater understanding of the zoo module! Sean. -- Sean Carmody Twitter: http://twitter.com/seancarmody Stable: http://mulestable.net/sean The Stubborn Mule Blog: http://www.stubbornmule.net Forum: http://mulestable.net/ [[alternative HTML version deleted]] ______________________________________________ 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.
