Re: [R] strptime

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From: Gabor Grothendieck (ggrothendieck@myway.com)
Date: Thu 06 May 2004 - 12:12:39 EST


Message-id: <loom.20040506T041126-767@post.gmane.org>


Issuing the command:

   unclass(z)

will show what is going on here.

David Scott <d.scott <at> auckland.ac.nz> writes:

:
: Delving into the murky world of dates and times I found this:
:
: dates <- c("02/27/92", "02/27/92", "01/14/92", "02/28/92", "02/01/92")
: > times <- c("23:03:20", "22:29:56", "01:03:30", "18:21:03", "16:56:26")
: > x <- paste(dates, times)
: > z <- strptime(x, "%m/%d/%y %H:%M:%S")
: > z
: [1] "1992-02-27 23:03:20" "1992-02-27 22:29:56" "1992-01-14 01:03:30"
: [4] "1992-02-28 18:21:03" "1992-02-01 16:56:26"
:
: which I understand. But then
:
: > length(dates)
: [1] 5
: > length(times)
: [1] 5
: > length(z)
: [1] 9
: >
:
: which I don't.
:
: It seems that length of a POSIXlt vector (which z is), always returns 9.
:
: David Scott
:
: PS: Using 1.9.0 on linux
:
:
: _________________________________________________________________
: David Scott Department of Statistics, Tamaki Campus
: The University of Auckland, PB 92019
: Auckland NEW ZEALAND
: Phone: +64 9 373 7599 ext 86830 Fax: +64 9 373 7000
: Email: d.scott <at> auckland.ac.nz
:
: Graduate Officer, Department of Statistics
:
: ______________________________________________
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