Hello,
I was able to bootstrap 1000 times, 20 times (20 columns of 1000 values). Is there a way to get mean for each column? Thanks! Aaron > Date: Sat, 16 Jan 2010 00:04:59 +0100 > From: stephan.kola...@gmx.de > To: aaron.fo...@students.tamuk.edu > CC: r-help@r-project.org > Subject: Re: [R] bootstrapping > > Hi Aaron, > > try the argument "statistic=mean". Then boot() will give you the mean > turn angle in your actual data (which appears to be 6 degrees, judging > from what you write), as well as the means of the bootstrapped data. > Then you can get (nonparametric) bootstrap CIs by > quantile(boot$t,probs=c(.025,.975)). As far as I can see, there is > really no need to look at sd(). > > A more interesting question would be how to deal with the fact that > -180=+180, there may be something to think about here... > > HTH, > Stephan > > > aaron.fo...@students.tamuk.edu schrieb: > > Hi All, > > > > > > > > I'm new to R so please bear with me. I have a dataset with 337 turn angles > > ranging from -180 to 180 degrees. I need to bootstrap (sample with > > replacement) 1,000 times to create expected average turn angle with 95% > > CIs. The code is pretty straightforward (<-boot(data =, statistic = ,R =)) > > but I am unsure how to input my observed mean (6 degrees) and standard > > deviation (66 degrees) into the statistic component. I realize there is a > > 'function' code but I can't seem to carry the results over to the 'boot' > > code. > > > > > > > > Thanks, > > > > Aaron M. Foley > > PhD Candidate > > Caesar Kleberg Wildlife Research Institute > > Texas A&M University - Kingsville > > Cousins Hall, Room 201 > > Kingsville, TX 78363 > > > > > > > > > > [[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.
