On Tue, Sep 27, 2011 at 5:56 AM, Ashim Kapoor <ashimkap...@gmail.com> wrote: > Dear R-helpers, > > It seems to me that a character zoo cannot be coerced to a numeric zoo. > Below is a minimal example. Can someone tell me what I have done wrong? > >> z<-zoo(1:4,order.by=1:4) >> coredata(z)<-as.character(coredata(z)) >> str(z) > ‘zoo’ series from 1 to 4 > Data: chr [1:4] "1" "2" "3" "4" > Index: int [1:4] 1 2 3 4 >> coredata(z)<-as.numeric(coredata(z)) >> str(z) > ‘zoo’ series from 1 to 4 > Data: chr [1:4] "1" "2" "3" "4" > Index: int [1:4] 1 2 3 4 > >
See ?zoo where it says that the zoo object may be "a numeric vector, matrix or a factor". Thus character is not supported although I suspect that a number of operations continue to work anyways -- although evidently not that one. This seems to result in a numeric zoo object: aggregate(z, identity, as.numeric) although these sorts of computations with zoo objects that strictly speaking are not legal are, of course, not officially supported. -- Statistics & Software Consulting GKX Group, GKX Associates Inc. tel: 1-877-GKX-GROUP email: ggrothendieck at gmail.com ______________________________________________ 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.
