-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Gabor Grothendieck Sent: Thursday, July 23, 2009 7:33 PM To: Nair, Murlidharan T Cc: [email protected] Subject: Re: [R] computing the radius of an arc
See ?draw.arc in the plotrix package to draw an arc. -- Yes, but if I understand the query, the hard part is determining what arc to draw. This in turn requires understanding how the curve is defined-- is it defined in closed form mathematically, or does Murli seek a fit that is an arc of a circle to a sample of data? If the former, this is a problem in calculus or perhaps differential geometry, not statistics, and that's where you'd look for methodology. "Best approximates" needs to be defined, too (what's the distance function?). So all in all, at least as I understand it, the question seems incoherent, incapable of being answered. Bert Gunter Genentech Nonclinical Statistics On Thu, Jul 23, 2009 at 10:13 PM, Nair, Murlidharan T<[email protected]> wrote: > Hi!! > > I am interesting in computing the radius of an arc that best approximates a curve. Is there an R function that I can use to draw an arc? > Nothing useful came up when I searched help.search. Does anyone have any suggestion to do this? > Thanks ../Murli ______________________________________________ [email protected] 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. ______________________________________________ [email protected] 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.
