Full_Name: Ronnen Levinson Version: 1.5.1 OS: Mac OS 10.1 Submission from: (NULL) (12.232.201.92) The value returned by strptime behaves badly after arithmetic operation and/or combination.> a=strptime("2002-06-01 12:15:01","%Y-%m-%d %H:%M:%S") > a[1] "2002-06-01 12:15:01"> a+0[1] "1932-04-25 21:46:45"> a+3600[1] "1932-04-25 22:46:45" b=c(a)> b[1] "1932-04-25 21:46:45" -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
will check stefano On Domenica, luglio 21, 2002, at 08:26 , RML27@cornell.edu wrote:> Full_Name: Ronnen Levinson > Version: 1.5.1 > OS: Mac OS 10.1 > Submission from: (NULL) (12.232.201.92) > > > The value returned by strptime behaves badly after arithmetic operation > and/or > combination. > >> a=strptime("2002-06-01 12:15:01","%Y-%m-%d %H:%M:%S") >> a > [1] "2002-06-01 12:15:01" >> a+0 > [1] "1932-04-25 21:46:45" >> a+3600 > [1] "1932-04-25 22:46:45" > b=c(a) >> b > [1] "1932-04-25 21:46:45" > > -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- > .-.-.- > r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R- > FAQ.html > Send "info", "help", or "[un]subscribe" > (in the "body", not the subject !) To: r-devel- > request@stat.math.ethz.ch > _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._ > ._._._ >-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
On Sun, 21 Jul 2002 RML27@cornell.edu wrote:> Full_Name: Ronnen Levinson > Version: 1.5.1 > OS: Mac OS 10.1 > Submission from: (NULL) (12.232.201.92) > > > The value returned by strptime behaves badly after arithmetic operation and/or > combination. > > > a=strptime("2002-06-01 12:15:01","%Y-%m-%d %H:%M:%S") > > a > [1] "2002-06-01 12:15:01" > > a+0 > [1] "1932-04-25 21:46:45" > > a+3600 > [1] "1932-04-25 22:46:45" > b=c(a) > > b > [1] "1932-04-25 21:46:45"The problem appears to be with as.POSIXct on the Mac. Operations that don't coerce to POSIXct work, those that do, don't. -thomas -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-devel-request@stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
I have partially fixed this bug. Now arithmetic works fine but I still
have problems with TZ, i.e.
> a=strptime("2002-06-01 12:15:01","%Y-%m-%d %H:%M:%S")
> a
[1] "2002-06-01 12:15:01"
> a+0
[1] "2002-06-01 05:15:01"
> a+3600
[1] "2002-06-01 06:15:01"
> b=c(a)
> b
[1] "2002-06-01 05:15:01"
TZ is set to +0100 dy default on the Carbon R.
stefano
On Domenica, luglio 21, 2002, at 08:26 , RML27@cornell.edu wrote:
> Full_Name: Ronnen Levinson
> Version: 1.5.1
> OS: Mac OS 10.1
> Submission from: (NULL) (12.232.201.92)
>
>
> The value returned by strptime behaves badly after arithmetic operation
> and/or
> combination.
>
>> a=strptime("2002-06-01 12:15:01","%Y-%m-%d
%H:%M:%S")
>> a
> [1] "2002-06-01 12:15:01"
>> a+0
> [1] "1932-04-25 21:46:45"
>> a+3600
> [1] "1932-04-25 22:46:45"
> b=c(a)
>> b
> [1] "1932-04-25 21:46:45"
>
> -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
> .-.-.-
> r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-
> FAQ.html
> Send "info", "help", or "[un]subscribe"
> (in the "body", not the subject !) To: r-devel-
> request@stat.math.ethz.ch
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> ._._._
>
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