that's weird. I opened a new R window and paste your code, it turns up
showing
> anz1 <- data.frame(Date.G = c("01-DEC-2008",
"01-DEC-2008","02-DEC-2008","03-DEC-2008","04-DEC-2008"),
+ Time.G =
c("00:03:57.398","00:04:03.778","00:04:38.639","00:04:38.639","00:04:38.639"))
>
> Time <- strptime(paste(anz1$Date.G, anz1$Time.G), '%d-%b-%Y %H:%M:%S')
> modifyList(Time, list(hour = Time$hour + 11))
[1] NA NA NA NA NA
What could possibly be the reason for that?
On Fri, Apr 30, 2010 at 12:52 AM, Henrique Dallazuanna <www...@gmail.com>wrote:
>
>
> On Thu, Apr 29, 2010 at 11:44 AM, Carol Gao <carol.g...@gmail.com> wrote:
>
>> I tried your new lines with some random time, it seems to be working
>> perfectly well, just as follows:
>> > z <- strptime("20/2/06 23:16:16.683", "%d/%m/%y %H:%M:%OS")
>> > modifyList(z, list(hour = z$hour + 11))
>> [1] "2006-02-21 10:16:16"
>>
>> Now it seems that I have some problem with my Time vector. As Time was
>> created by the following code:
>> Time <- paste(anz$Date.G.,anz$Time.G.)
>> The original data looks like the following with each row correspond to
>> each.
>> Date.G.
>> 01-DEC-2008
>> 01-DEC-2008
>> 02-DEC-2008
>> 03-DEC-2008
>> 04-DEC-2008
>> ...
>>
>> Time.G.
>> 00:03:57.398
>> 00:04:03.778
>> 00:04:38.639
>> 00:04:38.639
>> 00:04:38.639
>> ...
>> Somehow, I can't read Time in strptime(Time,"%d-%b-%Y %H:%M:%OS"). Do you
>> know what was wrong with it?
>>
>
> Why not?
>
> anz <- data.frame(Date.G = c("01-DEC-2008",
> "01-DEC-2008","02-DEC-2008","03-DEC-2008","04-DEC-2008"),
> Time.G =
> c("00:03:57.398","00:04:03.778","00:04:38.639","00:04:38.639","00:04:38.639"))
>
> Time <- strptime(paste(anz$Date.G, anz$Time.G), '%d-%b-%Y %H:%M:%S')
> modifyList(Time, list(hour = Time$hour + 11))
>
>
>
>>
>> Sorry for asking such questions, as I am quite new to R. Thanks for
>> helping me out.
>>
>> Carol
>>
>>
>>
>>
>> On Fri, Apr 30, 2010 at 12:16 AM, Henrique Dallazuanna
>> <www...@gmail.com>wrote:
>>
>>> Ops,
>>>
>>> I sent to you a wrong code, try this indeed:
>>>
>>> Time2 <- strptime(Time, '%d-%b-%Y %H:%M:%S')
>>>
>>> modifyList(Time2, list(hour = Time2$hour + 11))
>>>
>>> On Thu, Apr 29, 2010 at 11:14 AM, Carol Gao <carol.g...@gmail.com>wrote:
>>>
>>>> Appreciate it! I was trying on the code you sent, then some error codes
>>>> turned up:
>>>>
>>>> The first line runs ok, the second line:
>>>>
>>>>
>>>> > modifyList(Time2, list(hour = Time2$hour + 11))
>>>> Error in Time2$hour : $ operator is invalid for atomic vectors
>>>>
>>>> The time format I used for reading the Time vector is "%d-%b-%Y
>>>> %H:%M:%OS". Should I change any code above?
>>>>
>>>> Carol
>>>>
>>>>
>>>>
>>>>
>>>> On Thu, Apr 29, 2010 at 11:47 PM, Henrique Dallazuanna <
>>>> www...@gmail.com> wrote:
>>>>
>>>>> Try this:
>>>>>
>>>>> Time2 <- gsub("\\.*", "", tolower(Time))
>>>>> modifyList(Time2, list(hour = Time2$hour + 11))
>>>>>
>>>>>
>>>>> On Thu, Apr 29, 2010 at 10:33 AM, Carol Gao <carol.g...@gmail.com>wrote:
>>>>>
>>>>>> Hi there,
>>>>>>
>>>>>> I've got a column vector in a csv file as follows, and I need to add
>>>>>> 11
>>>>>> hours to each of them. Is there a way that I can do it? (The actual
>>>>>> file
>>>>>> size is much bigger than this.)
>>>>>>
>>>>>> Time
>>>>>> "01-DEC-2008 00:00:28.611"
>>>>>> "01-DEC-2008 00:00:43.155"
>>>>>> "01-DEC-2008 00:01:06.677"
>>>>>> "01-DEC-2008 00:01:06.677"
>>>>>> "01-DEC-2008 00:01:06.677"
>>>>>> "01-DEC-2008 00:01:06.919"
>>>>>> "01-DEC-2008 00:23:46.452"
>>>>>> "02-DEC-2008 00:03:17.646"
>>>>>> "02-DEC-2008 00:03:17.652"
>>>>>> "03-DEC-2008 00:15:11.485"
>>>>>> "03-DEC-2008 00:18:44.652"
>>>>>> "03-DEC-2008 00:22:17.447"
>>>>>>
>>>>>> Thank you in advance.
>>>>>>
>>>>>> Cheers,
>>>>>>
>>>>>> Carol
>>>>>>
>>>>>> [[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.
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Henrique Dallazuanna
>>>>> Curitiba-Paraná-Brasil
>>>>> 25° 25' 40" S 49° 16' 22" O
>>>>>
>>>>
>>>>
>>>
>>>
>>> --
>>> Henrique Dallazuanna
>>> Curitiba-Paraná-Brasil
>>> 25° 25' 40" S 49° 16' 22" O
>>>
>>
>>
>
>
> --
> Henrique Dallazuanna
> Curitiba-Paraná-Brasil
> 25° 25' 40" S 49° 16' 22" O
>
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