[R] Subset

[Boris Steipe]

> a <- c("<0.1", NA, 0.3, 5, "Nil")
> a
[1] "<0.1" NA     "0.3"  "5"    "Nil" 

> b <- as.numeric(a)
Warning message:
NAs introduced by coercion 
> b
[1]  NA  NA 0.3 5.0  NA

> b[! is.na(b)]
[1] 0.3 5.0


B.


> On Sep 22, 2017, at 11:48 AM, Shane Carey <careyshan at gmail.com> wrote:
> 
> Hi,
> 
> How do I extract just numbers from the following list:
> 
> a=c("<0.1",NA,0.3,5,Nil)
> 
> so I want to obtain: 0.3 and 5 from the above list
> 
> Thanks
> 
> 
> -- 
> Le gach dea ghui,
> *Shane Carey*
> *GIS and Data Solutions Consultant*
> 
> 	[[alternative HTML version deleted]]
> 
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