Fitting a Harmonic Function to Time Series Data
On 14/10/2011 1:00 a.m., ashz wrote:
Dear All, I have some time series data where X=month and Y=nutrient concentration (I can have several concentration data for one month). Is there a way to fit for it an Harmonic Function. Is there a package, script,etc which I can use? Thx
Possibly there is this functionality in Rob Hyndman's forecast package. See this post by him: http://robjhyndman.com/researchtips/longseasonality/ which has some code which should also be of use. David Scott _________________________________________________________________ David Scott Department of Statistics The University of Auckland, PB 92019 Auckland 1142, NEW ZEALAND Phone: +64 9 923 5055, or +64 9 373 7599 ext 85055 Email: d.scott at auckland.ac.nz, Fax: +64 9 373 7018