Hi, Quote: "The Savitzky-Golay smoothing turns out to be exactly equivalent to fitting data to a polynomial as described" (Skoog, Holler and Nieman, Principles of Instrumental Analysis, pp 111)
While R is not a tool for instrumental analysis, I am sure you can find smoothing methods that will suit your problem in R (there are plenty of them). There is a thread on this topic on this from March 2003 where Andy Liaw points to the KernSmooth package. http://maths.newcastle.edu.au/~rking/R/help/03a/2995.html all the best, Jesus -------------------------------------------------------------- Jesús María Frías Celayeta School of Food Sci. and Env. Health. Faculty of Tourism and Food Dublin Institute of Technology Cathal Brugha St., Dublin 1. Ireland Phone: +353 1 4024459 Fax: +353 1 4024495 http://www.dit.ie/DIT/tourismfood/science/staff/frias.html -------------------------------------------------------------- > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Behalf Of Andersson, Henrik > Sent: 05 February 2004 15:13 > To: [EMAIL PROTECTED] > Subject: [R] Savitzky-Golay smoothing for reflectance data > > > I got a question from a fellow PhD student that work with spectrum > analysis in Excel and now he has lots of spectrums that needs to be > smoothed, which would be nice to be able to do in batch. > > Is there an R package that can do: > > Savitzky-Golay smoothing for reflectance spectral data > > or a function that does something similar. > > _______________________________________ > Henrik Andersson > Netherlands Insitute of Ecology > [EMAIL PROTECTED] > > [[alternative HTML version deleted]] > > ______________________________________________ > [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 -- This message has been scanned for content and viruses by the DIT Information Services MailScanner Service, and is believed to be clean. http://www.dit.ie -- This message has been scanned for content and viruses by the DIT Information Services MailScanner Service, and is believed to be clean. http://www.dit.ie ______________________________________________ [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