search for: 4253h

Dear All, Anybody know if *4253H twice filter* is implemented in R? *Description of filter:* Applies a series of running medians of varying window size and a weighted average filter, with re-roughing, to the NDVI time series *Reference*: Velleman, P. (1980). Definition and comparison of robust nonlinear data smoothing algorithms....

Hello all, I'm a new member in this list and, also, a new R user and need some information about Resistant Smooth (using medians). The method I need of Resistant Smooth is the 4253H one and I didn't found how to perform that in R. Does anybody have an idea? Thanks, Henrique.

Thomas, First of all, thanks for the help, but it isn't exactly what I'm looking for. smooth() doesn't perform the smooth the way I want it to do. I want, precisely, the 4253H method. R doesn't give the option to do that. Thanks, Henrique.

...sage-ID: <001e01c33bed$a29a3950$019da8c0 at henrique> Content-Type: text/plain; charset="iso-8859-1" Thomas, First of all, thanks for the help, but it isn't exactly what I'm looking for. smooth() doesn't perform the smooth the way I want it to do. I want, precisely, the 4253H method. R doesn't give the option to do that. Thanks, Henrique. ------------------------------ Message: 18 Date: Thu, 26 Jun 2003 15:57:25 +0100 From: Federico Calboli <f.calboli at ucl.ac.uk> Subject: [R] degrees of freedom in a LME model To: r-help at stat.math.ethz.ch Message-ID: &...