On 5/20/2010 9:59 AM, Julian Burgos wrote:
Hi Jim
I´m using R 2.11.0, on Windows XP.
For what it is worth, it works fine for me, too. R 2.11.0 on Windows XP
Pro. My gut instinct is to check that time3 and time4 are really what
you think they are. If that is not it, post the results of dput(time3),
dput(time4), and sessionInfo().
time3=strptime("2009 06 01 00 47 00",format="%Y %m %d %H %M")
time4=strptime("2009 06 01 00 57 00",format="%Y %m %d %H %M")
diff(c(time3,time4))
#Time difference of 10 mins
sessionInfo()
#R version 2.11.0 (2010-04-22)
#i386-pc-mingw32
#
#locale:
#[1] LC_COLLATE=English_United States.1252
#[2] LC_CTYPE=English_United States.1252
#[3] LC_MONETARY=English_United States.1252
#[4] LC_NUMERIC=C
#[5] LC_TIME=English_United States.1252
#
#attached base packages:
#[1] stats graphics grDevices utils datasets methods base
On Thu, May 20, 2010 at 4:55 PM, jim holtman<jholt...@gmail.com> wrote:
Please provide information as to what version you are using; works fine
for me:
time3=strptime("2009 06 01 00 47 00",format="%Y %m %d %H %M")
time4=strptime("2009 06 01 00 57 00",format="%Y %m %d %H %M")
diff(c(time3,time4))
Time difference of 10 mins
I have version 2.10.1
On Thu, May 20, 2010 at 12:36 PM, Julian Burgos<jmbur...@uw.edu> wrote:
Dear list,
I´m calculating time differences between series of time stamps and I
noticed
something odd:
If I do this...
time1=strptime("2009 05 31 22 57 00",format="%Y %m %d %H %M")
time2=strptime("2009 05 31 23 07 00",format="%Y %m %d %H %M")
diff(c(time1,time2),units="mins")
Time difference of 10 mins
.. I get the correct response in minutes. But if I try the same thing
with
different values, say..
time3=strptime("2009 06 01 00 47 00",format="%Y %m %d %H %M")
time4=strptime("2009 06 01 00 57 00",format="%Y %m %d %H %M")
diff(c(time3,time4))
Time difference of NA secs
...which is not what I´m looking for. The difference should also be 10
minutes.
I burned a few neurons (and searched the documentation) and I cannot
figure
why this happens. Any ideas?
All the best,
Julian
Julian Mariano Burgos
Hafrannsóknastofnunin/Marine Research Institute
Skúlagata 4, 121 Reykjavík, Iceland
Sími/Telephone : +354-5752037
Bréfsími/Telefax: +354-5752001
Netfang/Email: jul...@hafro.is, jmbur...@uw.edu
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