[R] Drop last numeral

LCOG1 jroll at lcog.org
Tue Jan 12 22:14:33 CET 2010


The Below worked best for my purposes.  Thanks everyone.
Data<-c("1131", "1132", "1731" ,"1732" ,"1821" ,"1822", "2221" ,"2222",
"2241" ,"2242","414342" ,"414371" ,"414372")
substr(Data,1,nchar(Data)-1) 







LCOG1 wrote:
> 
> Hello all, 
>   Frustrated and i know you can help 
> 
> I need to drop the last numeral of each of my values in my data set.  So
> for the following i have tried the ?substring but since i have to specify
> the length, but because my data are of varying lengths it doenst work so
> well
> 
> Data<-c("1131", "1132", "1731" ,"1732" ,"1821" ,"1822", "2221" ,"2222",
> "2241" ,"2242","414342" ,"414371" ,"414372")
> Bldgid<-substring(as.character(Data),1,3)
> 
> returns:
> "113" "113" "173" "173" "182" "182" "222" "222" "224" "224" "414" "414"
> "414"
> 
> but i want"
> 
> "113", "113", "173" ,"173" ,"182" ,"182", "222" ,"222", "224"
> ,"224","41434" ,"41437" ,"41437")
> 
> The values thats have more than 4 numerals are whats messing things up. 
> Tried ?formatC as well but couldn't get it to coerce things correctly. 
> Thanks for the help
> 
> JR
> 

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