hi, I've troubles with some difftime objects. e.g. ISOdate(2001, 4, 26) - ISOdate(2001, 2, 26) - 2 works, telling me "Time difference of 57 days". But when I'd like to add days, such as ISOdate(2001, 4, 26) - ISOdate(2001, 2, 26) + 2 the function gives me an error. Function "as.COMDate.chron" of the Rbloomberg package doesn't work for that reason. I'm running R on a Windows machine, R version 2.4.1. Thanks, Judith
On Thu, 22 Mar 2007, Schiller Judith 1541 EB wrote:> hi, > > I've troubles with some difftime objects. e.g. > > ISOdate(2001, 4, 26) - ISOdate(2001, 2, 26) - 2 > > works, telling me "Time difference of 57 days". But when I'd like to add > days, such as > > ISOdate(2001, 4, 26) - ISOdate(2001, 2, 26) + 2 > > the function gives me an error.The error being? (It does not give me an error.)> Function "as.COMDate.chron" of the > Rbloomberg package doesn't work for that reason. > I'm running R on a Windows machine, R version 2.4.1.I cross-checked on that system. It is quite possible the error is due to some other package that you are using: that's why we ask for the result of sessionInfo(). I would expect (ISOdate(2001, 4, 26) - ISOdate(2001, 2, 26)) - (-2) to be a workaround, BTW. -- Brian D. Ripley, ripley at stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595
The error is "evaluation nested too deeply: infinite recursion /
options(expressions=)?", and sessionInfo() results in
R version 2.4.1 (2006-12-18)
i386-pc-mingw32
locale:
LC_COLLATE=German_Austria.1252;LC_CTYPE=German_Austria.1252;LC_MONETARY=German_Austria.1252;LC_NUMERIC=C;LC_TIME=German_Austria.1252
attached base packages:
[1] "splines" "stats" "graphics"
"grDevices" "datasets"
"tcltk" "utils" "methods"
"base"
other attached packages:
RODBC RBloomberg chron zoo RDCOMClient
MASS xtable survival svSocket svIO R2HTML
svMisc
"1.1-7" "0.1-10" "2.3-8"
"1.2-1" "0.91-0"
"7.2-30" "1.4-2" "2.30"
"0.9-5" "0.9-5" "1.58"
"0.9-5"
svIDE
"0.9-5"
The workaround is a nice idea, but as the problem arisis in
"as.COMDate.chron", other users of this function might be affected as
well.
Prof Brian Ripley schrieb:> On Thu, 22 Mar 2007, Schiller Judith 1541 EB wrote:
>
>
>> hi,
>>
>> I've troubles with some difftime objects. e.g.
>>
>> ISOdate(2001, 4, 26) - ISOdate(2001, 2, 26) - 2
>>
>> works, telling me "Time difference of 57 days". But when
I'd like to add
>> days, such as
>>
>> ISOdate(2001, 4, 26) - ISOdate(2001, 2, 26) + 2
>>
>> the function gives me an error.
>>
>
> The error being? (It does not give me an error.)
>
>
>> Function "as.COMDate.chron" of the
>> Rbloomberg package doesn't work for that reason.
>> I'm running R on a Windows machine, R version 2.4.1.
>>
>
> I cross-checked on that system.
>
> It is quite possible the error is due to some other package that you are
> using: that's why we ask for the result of sessionInfo().
>
> I would expect
>
> (ISOdate(2001, 4, 26) - ISOdate(2001, 2, 26)) - (-2)
>
> to be a workaround, BTW.
>
>