[R] Simple String Operation.

[arun]

Hi Bhupendrasinh,

No problem.
One more solution that works:

gsub("@.*?\\s","",x)
#[1] "Even in the mid-west spring is hardly for 3 weeks, while the scenario is different."

A.K.



________________________________
From: Bhupendrasinh Thakre <vickythakre at gmail.com>
To: arun <smartpink111 at yahoo.com> 
Cc: David Winsemius <dwinsemius at comcast.net>; R help <r-help at r-project.org> 
Sent: Tuesday, September 18, 2012 2:49 PM
Subject: Re: [R] Simple String Operation.


Thanks David and Arun.... It solved my problem. 
Appreciate the help in understanding this.


Best Regards,


Bhupendrasinh Thakre

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On Tue, Sep 18, 2012 at 12:41 PM, arun <smartpink111 at yahoo.com> wrote:


>
>HI,
>This may also work:
>gsub("@\\S+\\s*","",x)
>#[1] "Even in the mid-west spring is hardly for 3 weeks, while the scenario is different."
>#or
>gsub("@\\w+\\s*","",x)
>#[1] "Even in the mid-west spring is hardly for 3 weeks, while the scenario is different."
>
>A.K.
>
>
>----- Original Message -----
>From: David Winsemius <dwinsemius at comcast.net>
>To: Bhupendrasinh Thakre <vickythakre at gmail.com>
>Cc: r-help at r-project.org
>Sent: Tuesday, September 18, 2012 12:58 PM
>Subject: Re: [R] Simple String Operation.
>
>
>On Sep 18, 2012, at 9:35 AM, Bhupendrasinh Thakre wrote:
>
>> Hi List,
>>
>> This is kind of very simple but I am not able to understand how it works...
>> I have a sentence like "Even in the mid-west spring is hardly for 3 weeks,
>> while @south the scenario is different."
>>
>> There are some more example of the same nature and don't know the source
>> yet.
>> What i want to do is remove word after "@"..
>>
>> Solution i think of.
>>
>>   1. gsub("@$","",string)  or gsub("@\\","",string)
>>   2. regex
>
>If you do not know how to use dput then just show some code that creates the object of interest:
>
>> x <- "Even in the mid-west spring is hardly for 3 weeks, while @south the scenario is different."
>> gsub("@[[:alpha:]]+\\s", "", x)
>[1] "Even in the mid-west spring is hardly for 3 weeks, while the scenario is different."
>
>I was puzzled that the documentation suggested this should work, but it only removed the first letter in the word.
>
>> gsub("@\\w", "", x)
>[1] "Even in the mid-west spring is hardly for 3 weeks, while outh the scenario is different."
>
>And this is how you use dput()
>>  dput(x)
>"Even in the mid-west spring is hardly for 3 weeks, while @south the scenario is different."
>
>Notice that the output of dput on a character vector is not very revealing. It is sometimes useful to use this method to shorten a long object:
>
>dput(head(x))
>
>
>>
>> Please provide me some guidance. Since* words after @ may have different
>> length so need some flexible solution*.
>>
>> Also sorry don't know how to put it in dput().
>>
>> Best Regards,
>>
>>
>> Bhupendrasinh Thakre
>>
>> *Disclaimer :*
>>
>> The information contained in this communication is confi...{{dropped:11}}
>>
>> ______________________________________________
>> R-help at r-project.org mailing list
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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.
>
>David Winsemius, MD
>Alameda, CA, USA
>
>______________________________________________
>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.
>
>