[R] its does not recognize POSIXct w/ both time and Date?

[Armstrong, Whit]

can you please give an example that I can cut from your email and run on
my machine?
 

> -----Original Message-----
> From: r-help-bounces at r-project.org 
> [mailto:r-help-bounces at r-project.org] On Behalf Of B. Bogart
> Sent: Monday, November 05, 2007 3:51 PM
> To: r-help at r-project.org
> Subject: [R] its does not recognize POSIXct w/ both time and Date?
> 
> Hello all,
> 
> I'm getting much further with my time-series work, but still 
> getting into some problems.
> 
> I'm using POSIXct time format with both date and time.
> 
> I'd like to use that in an its object but It seems its only 
> processes the date part of the POSIX time stamps:
> 
> BMU_its_data <-  its(data[BMUindex,2-4],dates=data[BMUindex,1])
> Error in `row.names<-.data.frame`(`*tmp*`, value = 
> c("2007-10-31", "2007-10-31",  :
> 
> 
> The first column of the data is certainly correct, with both 
> date and time:
> 
>  > summary(data[BMUindex,1])
>                      Min.                   1st Qu.           
>          
> Median
> "2007-10-31 07:00:00 UTC" "2007-11-01 07:00:00 UTC" 
> "2007-11-03 07:00:00 
> UTC"
>                      Mean                   3rd Qu.           
>            
> Max.
> "2007-11-02 21:44:12 UTC" "2007-11-04 07:00:00 UTC" 
> "2007-11-05 08:00:00 
> UTC"
> 
> Perhaps the functions used in its are unable to see the time field. I 
> noticed that using unique() on the same data gives me only 6 
> different 
> values, one for each day, with the times ignored.
> 
> Is there any time format I can use in R (through its or zoo 
> or fCalendar 
> or anything) that allows me to use tools such as unique() and 
> so on and 
> have the times (not only dates) considered?
> 
> I've chosen its because it seems to have pretty good ts specific 
> plotting stuff in there, but I'd be willing to use anything 
> that allows 
> me to work with my POSIX dates down to the second. (or even msec)
> 
> Thanks.
> B. Bogart
> 
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> 




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