OK, I thought I was being explicit enough, but here goes. The out of the first
five rows of mu dataframe is:
Time hour lev.morgan lev.lock2 lev.lock1 flow direction
velocity bearing velcat
1 2009-07-06 15:00:00 15 3.266 3.274 3.240 1710.6 180.28
4.352 S (-0.01,5]
2 2009-07-06 16:00:00 16 3.268 3.272 3.240 1441.8 192.34
5.496 SSW (5,10]
3 2009-07-06 17:00:00 17 3.268 3.271 3.240 1300.1 202.29
2.695 SSW (-0.01,5]
4 2009-07-06 18:00:00 18 3.267 3.274 3.241 1099.1 237.16
2.035 WSW (-0.01,5]
5 2009-07-06 19:00:00 19 3.265 3.277 3.243 986.6 237.58
0.896 WSW (-0.01,5]
6 2009-07-06 20:00:00 20 3.266 3.281 3.242 1237.6 205.69
1.257 SSW (-0.01,5]
Time is POSIXct with CST e.g. "2009-07-06 15:00:00 CST"
I hope that makes it clearer what the data looks like
Tschüß
Tony Meissner
Principal Scientist (Monitoring)
Resources Monitoring Group
Science, Monitoring and Information Division
Department for Water
"Imagine" ©
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-----Original Message-----
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On
Behalf Of Prof Brian Ripley
Sent: Wednesday, 14 July 2010 3:29 PM
To: Ian Seow
Cc: r-help@r-project.org
Subject: Re: [R] POSIXlt error
Check out your timezone. Did something change on that day?
You omitted the time, so it is trying to make sense of
"1982-01-01 00:00"
According to
http://en.wikipedia.org/wiki/Singapore_Standard_Time
that time did not exist in that time zone (which I am guessing is the
one your computer is set to. If I use TZ=Singapore I get
> as.POSIXlt("1982-01-01")
Error in as.POSIXlt.character("1982-01-01") :
character string is not in a standard unambiguous format
> as.POSIXlt("1982-01-01 00:00")
Error in as.POSIXlt.character("1982-01-01 00:00") :
character string is not in a standard unambiguous format
> as.POSIXlt("1982-01-01 01:00")
[1] "1982-01-01 01:00:00 SGT"
> x <- as.POSIXlt("1982-01-01 01:00")
> x - 60*60 # an hour earlier
[1] "1981-12-31 23:30:00 SGT"
On Wed, 14 Jul 2010, Ian Seow wrote:
> Oops, sorry! Here it is:
>
> R version 2.11.1 (2010-05-31)
> i386-pc-mingw32
>
> locale:
> [1] LC_COLLATE=English_Singapore.1252 LC_CTYPE=English_Singapore.1252
> LC_MONETARY=English_Singapore.1252 LC_NUMERIC=C
> [5] LC_TIME=English_Singapore.1252
>
> attached base packages:
> [1] grDevices datasets splines graphics stats tcltk utils
> methods base
>
> other attached packages:
> [1] svSocket_0.9-48 TinnR_1.0.3 R2HTML_2.1 Hmisc_3.8-2
> survival_2.35-8
>
> loaded via a namespace (and not attached):
> [1] cluster_1.12.3 grid_2.11.1 lattice_0.18-8 svMisc_0.9-57 tools_2.11.1
>
>
>
>
>
> On Wed, Jul 14, 2010 at 10:24 AM, Erik Iverson <er...@ccbr.umn.edu> wrote:
>
>> Do you care to share your sessionInfo() , as the Posting Guide asks?
>>
>> I cannot reproduce on:
>>
>> R version 2.11.1 (2010-05-31)
>> i486-pc-linux-gnu
>>
>>
>>
>> On 07/13/2010 09:07 PM, Ian Seow wrote:
>>
>>> Hi, I'm encountering a strange error in POSIXlt... anyone got a clue on
>>> this?
>>>
>>> as.POSIXlt("1982-01-01")
>>>>
>>> Error in as.POSIXlt.character("1982-01-01") :
>>> character string is not in a standard unambiguous format
>>>
>>>> as.POSIXlt("1992-01-01")
>>>>
>>> [1] "1992-01-01"
>>>
>>>> as.POSIXlt("1972-01-01")
>>>>
>>> [1] "1972-01-01"
>>>
>>>> as.POSIXlt("1962-01-01")
>>>>
>>> [1] "1962-01-01"
>>>
>>
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
--
Brian D. Ripley, rip...@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
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
