Hi all, I'm an engineering student from Politecnico di Milano. I want to perform Smoothing using Smoothing B-splines on syntethic data. The splines must be NATURAL (at the edges the second and third order derivates are zero). How can I impose this constraint? I have searched in R documentation. For Smoothing I use the fda package. From the description of the function smooth.basis() it seems that it is not possible to use natural B-splines. I have found only the function ns() from splines package but in this way you can obtain only the basis and I have seen that this function is used in models expressed in symbolic notation.
Thanks in advance!! mggl ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.
