[R] removing all non-numeric characters from a string, but not "."

[peter dalgaard]

> On 26 Jul 2016, at 23:28 , Dimitri Liakhovitski <dimitri.liakhovitski at gmail.com> wrote:
> 
> Hello!
> 
> I have a string x:
> x <- c("x - 84", "y - 293.04", "z = 12.5")
> 
> I want to remove all the non-numeric stuff from it. The following works:
> gsub("[^0-9]", "", x)
> 
> However, it strips my numbers of "."
> 
> Help - how could I do the same but leave the "." in?

How about this?

> gsub("[^0-9.]", "", x)
[1] "84"     "293.04" "12.5"  

-pd

> 
> Thanks a lot!
> 
> -- 
> Dimitri Liakhovitski
> 
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-- 
Peter Dalgaard, Professor,
Center for Statistics, Copenhagen Business School
Solbjerg Plads 3, 2000 Frederiksberg, Denmark
Phone: (+45)38153501
Office: A 4.23
Email: pd.mes at cbs.dk  Priv: PDalgd at gmail.com