Thanks, I'll try that. What is the output of approxfun? On Mon, Nov 23, 2009 at 1:03 PM, Greg Snow <greg.s...@imail.org> wrote:
> If the client is always right, then what do they need us for? > > If you need a function to reproducibly generate predictions, then use loess > to generate a set of predictions for a reasonably dense set of x-values, > then use approxfun or splinefun to create a function to interpolate for you. > Then this function can give the predictions for various x values. > > -- > Gregory (Greg) L. Snow Ph.D. > Statistical Data Center > Intermountain Healthcare > greg.s...@imail.org > 801.408.8111 > > > > -----Original Message----- > > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- > > project.org] On Behalf Of Thomas S. Dye > > Sent: Monday, November 23, 2009 1:39 PM > > To: Christian Miner > > Cc: r-help@r-project.org > > Subject: Re: [R] Loess Fit > > > > Thanks Christian. The client is always right ... > > > > Tom > > > > On Nov 23, 2009, at 10:32 AM, Christian Miner wrote: > > > > > sorry, I don't. I have data that I can estimate, but my client wants > > > to "What if..." 20 separate scenarios, and that requires a function. > > > > > > On Mon, Nov 23, 2009 at 12:22 PM, Thomas S. Dye <t...@tsdye.com> > > wrote: > > > Hi Christian, > > > > > > Do you have a reference to a publication where this has been done? > > > > > > All the best, > > > Tom > > > > > > On Nov 23, 2009, at 10:15 AM, Christian Miner wrote: > > > > > >> it's a tricky maneuver. When I finish the fit, the predict function > > >> will give me the values, and I can smooth this out so it looks like > > >> a nice non-linear equation. The last thing I need to do is find the > > >> equation, knowing I know have the x and y values, as they will > > >> relate to each other in a non-linear fashion. > > >> > > >> Matlab can do this, but I'd rather not go into that realm. > > >> > > >> On Mon, Nov 23, 2009 at 12:11 PM, Thomas S. Dye <t...@tsdye.com> > > >> wrote: > > >> Hi Christian, > > >> > > >> I haven't seen an equation associated with a loess fit before. Do > > >> you have a reference to one of these? > > >> > > >> All the best, > > >> Tom > > >> > > >> > > >> On Nov 23, 2009, at 9:03 AM, Christian Miner wrote: > > >> > > >> I'm working on Loess fit models using R, once I have the fit > > >> accomplished, > > >> I'm looking to back-out the equation of the fitted non-linear curve, > > >> wondering if there is a way to determine this equation in R? I've > > >> been > > >> looking but can't find any literature. For me, the graph of the > > >> function is > > >> great, but without the equation of the graph, I'm kinda dead in the > > >> water. > > >> > > >> Christian Miner > > >> 503-866-6977 > > >> > > >> [[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. > > >> > > >> > > >> > > >> > > >> -- > > >> Christian Miner > > >> 503-866-6977 > > >> > > > > > > > > > > > > > > > -- > > > Christian Miner > > > 503-866-6977 > > > > > > > > > [[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. > -- Christian Miner 503-866-6977 [[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.
