[R] New errors with difftime()-objects in 2.11.1 (was Re: Request: difftime method for cut())

[David Winsemius]

So the original email message was in error and you meant to type  
"is.numeric" in the first line and not "as.numeric"?

(You might also note that sending duplicate messages to r-help and r- 
devel is not considered proper etiquette. My reply did not go to r- 
devel.)

On Jun 22, 2010, at 2:01 PM, Gustaf Rydevik wrote:

> On Tue, Jun 22, 2010 at 7:50 PM, David Winsemius <dwinsemius at comcast.net 
> > wrote:
>>
>> On Jun 22, 2010, at 1:33 PM, Gustaf Rydevik wrote:
>
>> Cannot help you there, but have you looked at the help page for  
>> difftime?
>>
>> "The as.double method returns the numeric value expressed in the  
>> specified
>> units. Using units = "auto" means the units of the object."
>>
>>
>> David Winsemius, MD
>> West Hartford, CT
>>
>>
>
> Oh, I forgot to mention that the workaround of using as.double (or
> as.numeric) works fine, and I've done that.
> It's just that it can take quite a while (as in several hours) to
> figure out that the reason for the error is that you have to force
> difftime objects to be numeric in 2.11.1, when the code's been working
> fine before and the error messages are obscure.
>
> Regards,


David Winsemius, MD
West Hartford, CT