> How about smoothing the percentages, and then take the second derrivative to find the inflection point? > > which.max(diff(diff((lowess(percentages)$y))))
This solution is what I've been using so far. The only difference is that I am smoothing the 1st derivative, since its the one I want to be smooth, smoothing the percentages curve does not produce good results. Thanks! Jose Lozano ______________________________________________ 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.
