[R] How do I extract single entries from a factor?

[Chel Hee Lee]

 > xx <- as.factor(c("AL", "AK", "CA", "FL"))
 > xx
[1] AL AK CA FL
Levels: AK AL CA FL
 > as.character(xx)
[1] "AL" "AK" "CA" "FL"

I hope this helps.

Chel Hee Lee

On 14-11-22 01:12 AM, Aditya Singh wrote:
> Dear Boris and R-Experts,
>
> I have a variable my_state which is a 2-letter character string telling which American state the user inputs. This I am do a if(identical(database entry,my_state)) to check for occurrences in the database.
>
> The problem is that the database entry[i,j] shows as a factor with various levels, e.g. the output when I do class(database[i,j])is:
>
> [1] "TX"
> AL.. levels through WY
>
> How do I convert a factor into a character?
>
> Aditya
>
>
>
> On Saturday, November 22, 2014 12:40 AM, Boris Steipe <boris.steipe at utoronto.ca> wrote:
> Seems to me you probably wanted a "while" in line 4.
>
> N.b.  There's also a missing "}" and totally messed up formatting :-(
>
> B.
>
>
>
> On Nov 21, 2014, at 1:19 PM, Aditya Singh <aps6dl at yahoo.com> wrote:
>
>> 1 my_min= min(outcome_data[which(outcome_data$State==my_state),11],na.rm=TRUE)
>> 2 print(my_min)
>> 3 jkr=0
>> 4 if (jkr<= 4706) {jkr=jkr+1
>> 5 if (identical(outcome_data[jkr,11],my_min) && identical(outcome_data[jkr,7],my_state)) {
>> 6 print((outcome_data[jkr,2]))
>> 7 break
>> 8 }
>>
>>
>> Dear Experts,
>>
>> My computer is never 'inside' of  the if condition at line 5, as jkr=0 always. my_min is a numeric. my_state is a 2 letter American State (character).
>>
>> This code gives NULL as output. Wondering!
>>
>> Its either very obvious or I am very dumb.
>>
>> Please do do reply!
>>
>> Aditya
>>
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>
> ______________________________________________
> 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.
>
> ______________________________________________
> 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.
>