[R] Problems with rbind

From: <tolga.i.uzuner_at_jpmorgan.com>
Date: Sat, 15 Nov 2008 15:13:19 +0000

Dear R Users,

A recent update on base packages on my R installation has introduced a problem to my code which did not exist before the update. The offending function is rbind, which fails where it was working just fine before the update.

I have two zoo objects, foo and bar, indexed by class Date. foo starts from "2007-10-09" and bar from "2007-10-10". I attempt to pad bar with a zero on Date "2007-10-09".

> foo<-zoo(1,order.by=as.Date("2007-10-09"))
> bar<-zoo(2,order.by=as.Date("2007-10-10"))
> bar <- rbind(zoo(0, order.by = index(foo)[1]), bar)
Error in rep.int("", nrow(r)) : incorrect type for second argument

Weird. I am certain the problem is due to a recent update to this package as I have an R installation on two pcs, the same line of code works well on one and not on the other.

Any help/pointers appreciated ? Is this perhaps a bug in rbind ? I am on R version 2.7.2, Windows XP SP2.

Thanks in advance,

Tolga Uzuner
Chief Investments Office
JP Morgan
6th Floor, 100 Wood Street
London EC2V 7RF
United Kingdom
Asst. Lee Hesketh
Tel: +44-20-77773303
Fax: +44-20-77422840

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