?quantile quantile(runif(1000), probs=seq(0,1,1/3))
John Sorkin wrote: > R 2.1.1 > Win 2k > > Would someone suggest a method (or methods) that can be used to > determine ntile cutpoints of a vector, i.e. to determine values that can > be used to divide a vector into thirds such as 0-33 centile, 34-66 > centile, 67-100 centile. If for example I had a vector: > 1,2,3,4,5,6,7,8,9 > and wanted to divide the vector into thirds > I would have cut-points of 3, and 6. > Thanks, > John > > John Sorkin M.D., Ph.D. > Chief, Biostatistics and Informatics > Baltimore VA Medical Center GRECC and > University of Maryland School of Medicine Claude Pepper OAIC > > University of Maryland School of Medicine > Division of Gerontology > Baltimore VA Medical Center > 10 North Greene Street > GRECC (BT/18/GR) > Baltimore, MD 21201-1524 > > 410-605-7119 > -- NOTE NEW EMAIL ADDRESS: > [EMAIL PROTECTED] > > [[alternative HTML version deleted]] > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > -- Chuck Cleland, Ph.D. NDRI, Inc. 71 West 23rd Street, 8th floor New York, NY 10010 tel: (212) 845-4495 (Tu, Th) tel: (732) 452-1424 (M, W, F) fax: (917) 438-0894 ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
