Hello, I have a data frame like this: > head(a) FID IID FLASER PLASER DIABDUR HBA1C ESRD pheno 1 fam1000-03 G1000 1 1 38 10.2 1 control 2 fam1001-03 G1001 1 1 15 7.3 1 control 3 fam1003-03 G1003 1 2 17 7.0 1 case 4 fam1005-03 G1005 1 1 36 7.7 1 control 5 fam1009-03 G1009 1 1 23 7.6 1 control 6 fam1052-03 G1052 1 1 32 7.3 1 control
> dim(a) [1] 1698 8 I am doing histogram plot via: ggplot(a, aes(x=HBA1C, fill=pheno)) + geom_histogram(binwidth=.5, position="dodge") there is 848 who have "case" in pheno column and 892 who have "control" in pheno column. I would like to have on y-axis shown percentage of individuals which have either "case" or "control" in pheno instead of count. Please advise, Ana ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.