issues with zoo masking as.Date function, resulting in issues with as.Date
Thanks for the tip and workaround, this sounds like a bug with zoo package. -Ivan -----Original Message----- From: Yohan Chalabi [mailto:chalabi at phys.ethz.ch] Sent: Tuesday, October 18, 2011 8:49 AM To: Gabor Grothendieck Cc: Zhang, Ivan; r-sig-finance Subject: Re: [R-SIG-Finance] issues with zoo masking as.Date function, resulting in issues with as.Date
On 14 oct. 2011, at 20:19, Gabor Grothendieck wrote:
On Fri, Oct 14, 2011 at 1:21 PM, Zhang, Ivan <ivan.zhang at bankofamerica.com> wrote:
Hi Everyone, I just upgraded to 2.13, this seems like a very obvious issue however I haven't seen this addressed anywhere, perhaps I am missing something elementary? library(timeDate)
as.Date(timeDate('2011-10-10'))
[1] "2011-10-10"
library(zoo)
Attaching package: 'zoo' The following object(s) are masked from 'package:base': as.Date
as.Date(timeDate('2011-10-10'))
Error in as.Date.default(timeDate("2011-10-10")) :
do not know how to convert 'timeDate("2011-10-10")' to class "Date"
The timeDate package needs to export as.Date.timeDate in its NAMESPACE
?? timeDate does export as.Date.timeDate as an S3 method.
If the zoo package overwrites a base function and do not import namespaces of other packages which extend it. It cannot work.
in this particular example
base::as.Date(timeDate('2011-10-10'))
works.
file . As a workaround you can do this:
as.Date.timeDate <- timeDate:::as.Date.timeDate
as.Date(timeDate('2011-10-10'))
[1] "2011-10-10" -- Statistics & Software Consulting GKX Group, GKX Associates Inc. tel: 1-877-GKX-GROUP email: ggrothendieck at gmail.com
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