[R] Extracting part of a factor

[KMNanus]

When I did that, I got - 

 "Error in `$<-.data.frame`(`*tmp*`, "site", value = integer(0)) : 
  replacement has 0 rows, data has 6”

The data frame has 6 rows.

Ken
kmnanus at gmail.com
914-450-0816 (tel)
347-730-4813 (fax)



> On Mar 3, 2016, at 4:14 PM, Ista Zahn <istazahn at gmail.com> wrote:
> 
> Like this?
> 
> x <- factor("001-014")
> y <- substr(as.character(x), 1, 3)
> 
> Best,
> Ista
> 
> 
> 
> 
> On Thu, Mar 3, 2016 at 3:18 PM, KMNanus <kmnanus at gmail.com> wrote:
>> I have a factor variable that is 6 digits and hyphenated.  For example, 001-014.
>> 
>> I need to extract the first 3 digits to a new variable using mutate in dplyr - in this case 001 - but can’t find a function to do it.
>> 
>> substr will do this for character strings, but I need the variable to remain as a factor.
>> 
>> Is there an R function  or workaround to do this?
>> 
>> 
>> Ken
>> kmnanus at gmail.com
>> 914-450-0816 (tel)
>> 347-730-4813 (fax)
>> 
>> 
>> 
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