I'm using the following code to create quartile intervals of my dataset and it is working like it is suppose too. In my final output of the data I would like currency amounts to be displayed with commas. I have not found an option either through FormatC or sprintf that will display the data with commas, they only seem to add decimals. Is there a format that will display commas without me reverting to the labels statement.  This is an ongoing process where the values are updated, so using the labels statement would be too much to manage.


Benchparaq<-levels(quantcut(benchmarkPara$Benchmark_Total, q=seq(0,1,by=0.25), na.rm=TRUE))
>                    #,labels=c("$267,000-<$436,000","$436,000-<$559,000","$559,000-<$836,000","$836,000-<$1,590,000"))
> lower <-as.numeric(sub("\\((.+),.*", "\\1", Benchparaq))
Warning: NAs introduced by coercion
> upper <- as.numeric(sub("[^,]*,([^]]*)\\]", "\\1", Benchparaq))
> lower<-ifelse(is.na(lower),0,as.numeric(lower))
> upper<-ifelse(is.na(upper),0,as.numeric(upper))
> lower
[1]      0 436000 559000 836000
> upper
[1]  436000  559000  836000 1590000
> Benchparaq<-paste("$",lower,"-<","$",upper,sep="")
>   lower<-NULL
>   upper<-NULL
> Benchparaq
[1] "$0-<$436000"       "$436000-<$559000"  "$559000-<$836000"  "$836000-<$1590000"


Chris Anderson
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