Got it.
Thanks > CC: r-help@r-project.org > From: dwinsem...@comcast.net > To: aaron.fo...@students.tamuk.edu > Subject: Re: [R] bootstrapping > Date: Wed, 20 Jan 2010 10:34:20 -0500 > > > On Jan 20, 2010, at 10:23 AM, <aaron.fo...@students.tamuk.edu> > <aaron.fo...@students.tamuk.edu > > wrote: > > > > > 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? > > > > ?colMeans > > > > > > > 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. > > David Winsemius, MD > Heritage Laboratories > West Hartford, CT > [[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.
