I would like to know the answer to this question now that I know what we are getting at. integrate() looks like it is the right thing, but it has to use a function- I would like to know how to just integrate the area under a curve with just an input of x and y coordinates.
Stephen On Tue, Jul 1, 2008 at 5:22 PM, Carl Witthoft <[EMAIL PROTECTED]> wrote: > I think the previous answer (to use lm() ) is not necessarily the best > option. > > Since what you want is the definite integral (area under the curve), you > can just use one of the existing definite integration tools (sorry, I don't > recall the names because I don't use them). > > If you want to get a "smoothed" curve to remove errors in your data points, > I'd recommend fitting a spline and integrating under that. > > > ______________________________________________ > 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. > -- Let's not spend our time and resources thinking about things that are so little or so large that all they really do for us is puff us up and make us feel like gods. We are mammals, and have not exhausted the annoying little problems of being mammals. -K. Mullis [[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.
