Works like a charm! Thanks.
Gabor Grothendieck wrote:
>
> On Mon, Dec 8, 2008 at 11:52 PM, Tubin <[EMAIL PROTECTED]> wrote:
>>
>> I have date and time data which looks like this:
>>
>> [,1] [,2]
>> [1,] "7/1/08" "9:19"
>> [2,] "7/1/08" "9:58"
>> [3,] "7/7/08" "15:47"
>> [4,] "7/8/08" "10:03"
>> [5,] "7/8/08" "10:32"
>> [6,] "7/8/08" "15:22"
>> [7,] "7/8/08" "15:27"
>> [8,] "7/8/08" "15:40"
>> [9,] "7/9/08" "10:25"
>> [10,] "7/9/08" "10:27"
>>
>> I would like to use chron on it, so that I can calculate intervals in
>> time.
>>
>> I can't seem to get chron to accept the time format that doesn't include
>> seconds. Do I have to go through and append :00 on every line in order
>> to
>> use chron?
>
>
>
> That's one way:
>
> m <- matrix( c("7/1/08","9:19",
> "7/1/08","9:58",
> "7/7/08","15:47",
> "7/8/08","10:03",
> "7/8/08","10:32",
> "7/8/08","15:22",
> "7/8/08","15:27",
> "7/8/08","15:40",
> "7/9/08","10:25",
> "7/9/08","10:27"), nc = 2, byrow = TRUE)
>
> chron(m[,1], paste(m[,2], 0, sep = ":"))
>
> # another is to use as.chron
>
> as.chron(apply(m, 1, paste, collapse = " "), "%m/%d/%y %H:%M")
>
> ______________________________________________
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> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
>
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