[R] tapply with specific quantile value

2011-03-24 Thread Steven Ranney
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

Re: [R] tapply with specific quantile value

2011-03-24 Thread Peter Alspach
-project.org [mailto:r-help-bounces@r- project.org] On Behalf Of Steven Ranney Sent: Friday, 25 March 2011 12:18 p.m. To: r-help@r-project.org Subject: [R] tapply with specific quantile value All - I have an example data frame x l.c.1 43.38812035 085 47.55710661 085 47.55710661 085

Re: [R] tapply with specific quantile value

2011-03-24 Thread Tóth Dénes
Just have a look at ?quantile and the probs argument. tapply(x, l.c.1, quantile,probs=0.75) Anyway, quantiles and quartiles are not the same. I guess you meant the 3rd quartile. All - I have an example data frame x l.c.1 43.38812035 085 47.55710661 085 47.55710661 085

Re: [R] tapply with specific quantile value

2011-03-24 Thread Jorge Ivan Velez
Hi Steven, See the prob argument under ?quantile. The following should be what you want: tapply(x, l.c.1, quantile, prob = 0.75) HTH, Jorge * * On Thu, Mar 24, 2011 at 7:18 PM, Steven Ranney wrote: All - I have an example data frame x l.c.1 43.38812035 085 47.55710661

Re: [R] tapply with specific quantile value

2011-03-24 Thread Steven Ranney
-help-bounces@r- project.org] On Behalf Of Steven Ranney Sent: Friday, 25 March 2011 12:18 p.m. To: r-help@r-project.org Subject: [R] tapply with specific quantile value All - I have an example data frame x     l.c.1 43.38812035   085 47.55710661      085 47.55710661      085 51.99211429