Use ?sample With replace On the number of rows, and then use them as indicators for picking rows from the data set.
For example: *sample(10, replace=T)* Read more here: http://www.ats.ucla.edu/stat/R/library/bootstrap.htm ---------------------------------------------- My contact information: Tal Galili E-mail: tal.gal...@gmail.com Phone number: 972-52-7275845 FaceBook: Tal Galili My Blogs: http://www.talgalili.com (Web and general, Hebrew) http://www.biostatistics.co.il (Statistics, Hebrew) http://www.r-statistics.com/ (Statistics,R, English) On Thu, Nov 19, 2009 at 9:40 AM, ke fang <fang.c...@yahoo.com.cn> wrote: > Dear all. > I have a data matrix that each row containing a specific individual's > information including individual observation and properties. I'm trying to > use R to create some bootstrap samples with this data matrix. I have tried > the boot() function in boot package, but it seems that this function need > one or more statistic to be summarized. I can't just get my data resampled. > I also tried the resample() function but get nothing. Can some body give me > some hint on solving this problem? > Thanks in advance! > Here is some of my data. Rows represent individual. Columns represent > individual information and observation. > > 10 168 133 22.5 1 0 3.45 4.890349 > 11 672 15 25.5 1 0 3.9 2.70805 > 12 168 201 25.7 1 0 3.9 5.303305 > 17 216 125 46.5 0 0 4.7 4.828314 > 18 216 103 95 0 0 9.5 4.634729 > 19 504 92 64 0 0 7 4.521789 > 20 504 52 81.5 0 0 8.2 3.951244 > > > ___________________________________________________________ > ºÃÍæºØ¿¨µÈÄã·¢£¬ÓÊÏäºØ¿¨È«ÐÂÉÏÏߣ¡ > > [[alternative HTML version deleted]] > > > ______________________________________________ > 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. > > [[alternative HTML version deleted]]
______________________________________________ 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.
