[R] remove ", " at the end of each line for all lines except the first line in a data frame

[Paul Murrell]

Hi

On 29/05/2011 2:02 a.m., Dennis Murphy wrote:
> Homework question?

Indeed it is.

Dear 220 student.  The resources at your university, including your 
lecturer, should be your first port of call for questions on labs and 
assignments.  Also, if you ever post questions on a forum like this you 
should make it VERY clear that you are asking about assessed coursework.

Paul

p.s.  That's a character vector you are working with, not a data frame.

> This one's pretty easy; see
 >
> ?regex
> ?gsub
>
> A couple of examples on gsub()'s help page are rather close to what
> you need. The basic structure is
>
> gsub(<string to replace>,<replacement string>, name_of_string)
>
> where the strings are enclosed in quotes. If you need to apply this
> function to each row of your data frame, see ?apply and put the gsub()
> code into an anonymous function.
>
> Best of luck!
> Dennis
>
>
> On Sat, May 28, 2011 at 5:54 AM, xiaerwhite<xiaerwhite at hotmail.com>  wrote:
>> the question ask me to use gsub() and subsetting to remove the comma at the
>> end of the for all but the first value in a data frame.
>>
>> the first few lines are like the following:
>> [1] "2177663,-41,175,2678248,6021224,1840,5,25,17,,,6,,"
>>   "2177691,-39.6,176.2,2784798,6173592,1843,7,8,5,30,,7.6,12,"
>> [3] "2177754,-47,166,1977803,5333806,1846,7,13,6,20,,63,,"
>> "2177759,-41,172,2425856,6022664,1846,11,18,19,,,65,,"
>> [5] "2177762,-41,174.5,2636191,6022065,1846,12,4,5,45,,6,,"
>> "2177819,-41.9,173.60001,2559794,5923028,1848,10,15,14,10,,7.4,12,"
>>
>> this data frame is called the originalQuakes
>>
>> thank you for reading this, and please help!
>>
>>
>>
>> --
>> View this message in context: http://r.789695.n4.nabble.com/remove-at-the-end-of-each-line-for-all-lines-except-the-first-line-in-a-data-frame-tp3557391p3557391.html
>> Sent from the R help mailing list archive at Nabble.com.
>>
>> ______________________________________________
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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.
>>
>
> ______________________________________________
> R-help at 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.

-- 
Dr Paul Murrell
Department of Statistics
The University of Auckland
Private Bag 92019
Auckland
New Zealand
64 9 3737599 x85392
paul at stat.auckland.ac.nz
http://www.stat.auckland.ac.nz/~paul/