n Ripley
> Subject: Re: [R] data frame manipulation with zero rows
>
> Hi Arnaud,
>
> I've added this case to the set of test cases in plyr and it will be
> fixed in the next version.
>
> Hadley
>
> On Tue, Jun 1, 2010 at 2:33 PM, arnaud Gaboury
> wrote:
(nrow(futures)==0) futures<-data.frame(...)
>
>
>
>
>
>> -Original Message-
>> From: Peter Ehlers [mailto:ehl...@ucalgary.ca]
>> Sent: Tuesday, June 01, 2010 12:07 PM
>> To: arnaud Gaboury
>> Cc: 'Prof Brian Ripley'; r-help@r-project.o
rnaud Gaboury
> Cc: 'Prof Brian Ripley'; r-help@r-project.org
> Subject: Re: [R] data frame manipulation with zero rows
>
> On 2010-06-01 1:53, arnaud Gaboury wrote:
> > Brian,
> >
> > If I do understand correctly, I must use in my function something
> else
It is indeed ddply() from package plyr.
> -Original Message-
> From: Prof Brian Ripley [mailto:rip...@stats.ox.ac.uk]
> Sent: Tuesday, June 01, 2010 12:24 PM
> To: Peter Ehlers
> Cc: arnaud Gaboury; r-help@r-project.org
> Subject: Re: [R] data frame manipulation with
hat that is or what it should do
for the case of zero rows: it may or may not be the one in package
plyr.
-Peter Ehlers
-Original Message-
From: Prof Brian Ripley [mailto:rip...@stats.ox.ac.uk]
Sent: Tuesday, June 01, 2010 9:47 AM
To: arnaud Gaboury
Subject: Re: [R] data frame manip
ilto:rip...@stats.ox.ac.uk]
Sent: Tuesday, June 01, 2010 9:47 AM
To: arnaud Gaboury
Subject: Re: [R] data frame manipulation with zero rows
On Tue, 1 Jun 2010, arnaud Gaboury wrote:
Dear group,
Here is the kind of data.frame I obtain every day with my function :
futures<-
structure(list(DESCRIPT
0 9:47 AM
> To: arnaud Gaboury
> Subject: Re: [R] data frame manipulation with zero rows
>
> On Tue, 1 Jun 2010, arnaud Gaboury wrote:
>
> > Dear group,
> >
> > Here is the kind of data.frame I obtain every day with my function :
> >
> > futures <
Dear group,
Here is the kind of data.frame I obtain every day with my function :
futures <-
structure(list(DESCRIPTION = c("CORN Jul/10", "CORN Jul/10",
"CORN Jul/10", "CORN Jul/10", "CORN Jul/10", "LIVE CATTLE Aug/10",
"LIVE CATTLE Aug/10", "SUGAR NO.11 Jul/10", "SUGAR NO.11 Jul/10",
"SUGAR N
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