This did the trick
as.numeric(diff(c(ISOdatetime(2011,6,1,11,59,1.09),ISOdatetime(2011,6,5,11,59,1.09))))
[1] 345600
________________________________
From: Jim Holtman <jholt...@gmail.com>
Cc: "R-help@r-project.org" <R-help@r-project.org>
Sent: Monday, October 10, 2011 9:26 AM
Subject: Re: [R] Handling Time in R
check the help page; there is a parameter ('units' I thnk) that will let you
specify that.
Sent from my iPad
Thanks a lot.
>
>That helped.
>One thing now is to have the difftime(y,x) to always report seconds. There are
>times that there is a change in the day and thus the diff will report few days
>difference. How can it always report only seconds?
>
>
>I would like to thank you in advance for your help
>
>
>B.R
>Alex
>
>
>
>
>________________________________
>From: jim holtman <jholt...@gmail.com>
>Cc: "R-help@r-project.org" <R-help@r-project.org>
>Sent: Friday, October 7, 2011 5:34 PM
>Subject: Re: [R] Handling Time in R
>
>?ISOdatetime
>
>
>> x <- ISOdatetime(2011,10,6,16,23,30.539)
>> str(x)
>POSIXct[1:1], format: "2011-10-06 16:23:30"
>> y <- ISOdatetime(2011,10,6,16,23,30.939)
>> difftime(y,x)
>Time difference of 0.3999999 secs
>>
>
>
>> Dear all,
>> I would like to ask your help regarding handling time stamps in R. I think
>> first I need a reference to read about their logic and how I should handle
>> them.
>>
>> For example, this is a struct I have
>>
>>
>> str(MyStruct$TimeStamps)
>> num [1:100, 1:6] 2011 2011 2011 2011 2011 ...
>>
>> MyStruct$TimeStamps[1,]
>> [1] 2011.000 10.000 6.000 16.000 23.000 30.539
>>
>> the last field contains
seconds.milliseconds.
>>
>> How I can for example make calculations with time stamps like see if the
>> MyStruct$TimeStamps[1,]-MyStruct$TimeStamps[2,] differ more than
>> 300millisecond, or 3 days have passed?
>>
>> I would like to thank you in advance for your suggestions
>>
>> B.R
>> Alex
>>
>> [[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.
>>
>>
>
>
>
>--
>Jim Holtman
>Data Munger
Guru
>
>What is the problem that you are trying to solve?
>
>
>
[[alternative HTML version deleted]]
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