It would be a useful additon to the help page to add integrate(dnorm, lower = -1.96, upper = 1.96, mean = 2, sd = 1)
as an example. Thanks, Frank Chicago > Date: Mon, 23 Jul 2012 19:54:45 -0700 > From: ehl...@ucalgary.ca > To: kri...@ymail.com > CC: chicagobrownb...@hotmail.com; r-help@r-project.org > Subject: Re: [R] Integrate(dnorm) with different mean and standard deviation > help > > On 2012-07-23 19:48, Pascal Oettli wrote: > > Hello, > > > > Maybe the following could help: > > > > > f <- function(x) dnorm(x, mean=2, sd=1) > > > integrate(f, -1.96, 1.96) > > 0.4840091 with absolute error < 1.4e-12 > > Or you could note the '...' argument indicated on the help page: > > integrate(dnorm, lower = -1.96, upper = 1.96, > mean = 2, sd = 1) > > Peter Ehlers > > > > > HTH > > > > Regards. > > > > > > Le 24/07/2012 11:23, FJ M a écrit : > >> > >> I'm trying to provide different parameters to the integrate function for > >> various probability functions. I'm using dnorm as the simplest example > >> here. For instance integrate(dnorm, -1.96, 1.96) produces the correct > >> answer for a normal distribution with mean 0 and standard deviation 1. > >> I've tried two ways to use mean=2.0 and standard deviation 1, but with no > >> luck. The examples follow. > >> > >> > >>> integrate(dnorm, -1.96, 1.96) > >> 0.9500042 with absolute error < 1e-11 > >>> mean = 2.0 > >>> sd = 1.0 > >>> integrate(dnorm, -1.96, 1.96) > >> 0.9500042 with absolute error < 1e-11 > >>> integrate(dnorm(mean=2.0,sd=1.0), -1.96, 1.96) > >> Error in .Internal(dnorm(x, mean, sd, log)) : 'x' is missing > >> Calls: integrate -> match.fun -> dnorm > >> Execution halted > >> > >> How do I change the built in mean=0 and standard deviation=1 for dnorm > >> using integrate? > >> > >> Thanks, > >> > >> Frank > >> Chicago, IL > >> [[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. > >> > > > > ______________________________________________ > > 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.