does locpoly in package KernSmooth help?
Martin aus Chemnitz wrote: > Hi! > > Some weeks ago I discovered R. Now, I have a somewhat complicated task > and am not sure whether R is the right tool to solve it. > > I got data of several series or measurements where I have to find the > two inflection points. I did a linear regression (with ^2 and ^3 > arguments), the problem there was that I had to look only at a very > narrow band of measurement in order to get the approximation right at > the essential point. (Maybe there is a better way than lm?) > > Now that I have an appromiated function, I need its inflection point, > but I could not find any R function for that. Is there any? Or can > anyone recommend a good (possibly free) mathematical programme? > > Maybe this could be helpful: All the measurements look like this and I > marked the points of interest. > > ,------- > / > / <-- > / > ,----� > / > | <-- > / > -----� > > Thank you very much for your help > > Martin > > ______________________________________________ > [EMAIL PROTECTED] mailing list > https://www.stat.math.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html -- -------------------------------------------- Thomas Cornulier Centre d'Etudes Biologiques de Chiz� - CNRS 79360 Beauvoir sur Niort +33 (0)549099613 / fax +33 (0)549096526 mobile +33 (0)620660784 ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
