[R] Inserting a character into a character string XXXX

[Dan Abner]

Hi Bill,

Thanks very much for your response.

Can you suggest an approach for the "pre"-padding? Here is a more
respresentative sample of the values:

mytimes<-scan(what="")
1334
2310
39
2300
1556
3
404
37
1320
4
211
2320


Thanks!

Dan



On Thu, Jan 26, 2012 at 10:41 AM, William Dunlap <wdunlap at tibco.com> wrote:
>  > sub("([[:digit:]]{2,2})$", ":\\1", mytimes)
>  [1] "14:57" "14:57" "13:10" "11:58" "1:37"  "18:55"
>
> That will convert "05" to ":05" and will do nothing
> to "5".  Pad with 0's before calling sub if that is
> required.
>
> Bill Dunlap
> Spotfire, TIBCO Software
> wdunlap tibco.com
>
>> -----Original Message-----
>> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org] On Behalf Of Dan Abner
>> Sent: Thursday, January 26, 2012 6:50 AM
>> To: r-help at r-project.org
>> Subject: [R] Inserting a character into a character string XXXX
>>
>> Hello everyone,
>>
>> I have a character vector of 24 hour time values in the format hm
>> without the delimiting ":". How can I insert the ":" immediately to
>> the left of the second digit from the right?
>>
>> mytimes<-scan(what="")
>>  1457
>>  1457
>>  1310
>>  1158
>>  137
>>  1855
>>
>>
>> Thanks!
>>
>> Dan
>>
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