All -

I have an example data frame

x       l.c.1
43.38812035     085
47.55710661     085
47.55710661     085
51.99211429     085
51.99211429     095
54.78449958     095
54.78449958     095
56.70201864     095
56.70201864     105
59.66361903     105
61.69573564     105
61.69573564     105
63.77469479     115
64.83191994     115
64.83191994     115
66.98222118     115
66.98222118     125
66.98222118     125
66.98222118     125
66.98222118     125

and I'd like to get the 3rd quantile by l.c.1 so I use

tapply(x, l.c.1, quantile)

and my output includes all quantiles (i.e., 0, 25%, 50%, 75%, 100%)
but I'm only interested in the 75% quantile.  Is there an additional
statement or function I can use to get just the quantile that I want?

Thanks for your help -

SR
Steven H. Ranney

______________________________________________
R-help@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.

Reply via email to