On Aug 5, 2009, at 5:45 PM, Noah Silverman wrote:
In my continuing quest to generate some summary data, I've come
across some useful suggestions in pasts posts.
The apply operation returns an error, and I can't figure out why.
Can someone help me fix this?
testlogdata <- cbind(testlogdata, range_group=cut(testlogdata
$lrm_score, breaks=c(.9, .8, .7, .6, .5, .4, .3, .2, .1)))
apply(testlogdata, 2, function(x){tapply(x, list(testlogdata
$range_group), mean)})
I think you're close -- are you sure you should be making a list out
of your testlogdata$range_group in your call to tapply?
Here's another way to kind of doing the same ... might need some
tweaking, but:
apply(testlogdata, 2, function (x) lapply(split(x, testlogdata
$range_group), mean)
-steve
--
Steve Lianoglou
Graduate Student: Computational Systems Biology
| Memorial Sloan-Kettering Cancer Center
| Weill Medical College of Cornell University
Contact Info: http://cbio.mskcc.org/~lianos/contact
______________________________________________
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.
