similar to: Savitzky-Golay Derivative and Smoothing

As the request for the Savitzky-Golay Algorithm in R has come up several times, I here include my implementation based on code written for Matlab. Savitzky-Golay uses the pseudo-inverse pinv() of a matrix. There is an 'generalized inverse' ginv() in the MASS package, but I use a simpler form because I didn't want to 'require' MASS any time I apply Savitzky-Golay.

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

Hi When we use the sav_gol command in R , it shows an error which says: " error in as.matrix". We've downloaded the necessary packages. Kindly help us with this issue. If there is any other function to perform Savitzky-Golay smoothing in R, please let me know. With Regards Reynolds

Hi, Does anyone know how to use weights and generate error bounds for Savitzky-Golay? I have a (smallish) set of points y equally spaced each with a known error and would like to smooth them using S-G but so as to take into account the error already have and construct new error bounds around them that take into account the errors they had at the beginning and the erros they get as a result

Dear all, Sorry if this is slightly off the track as far as R is concerned, but I have been using the Savitzky-Golay filter to estimate some derivatives of interest. I am wondering however, if anyone has seen anything in the literature (or has any ideas) of how these estimates perform asymptotically. Does anyone know what the rate of convergence is for these? Thanks, matt.

Hi I am running a Savitzky-Golay smoothing filter (http://tolstoy.newcastle.edu.au/R/help/04/02/0385.html) for variables in my dataset, dim (272:90). I managed to run the code for individual variables in the dataset and then combine the results into a single dataset. My novice attempt at this task is shown below csg<-NULL for (i in 1:ncol(data.all)) {

Dear all, Sorry if this is slightly off the track as far as R is concerned, but I have been using the Savitzky-Golay filter to estimate some derivatives of interest. I am wondering however, if anyone has seen anything in the literature (or has any ideas) of how these estimates perform asymptotically. Does anyone know what the rate of convergence is for these as the sample size increases?

Hi the list. I do not understand the philosophy behind numeric and integer. - 1 is numeric (which I find surprising) - 2 is numeric. - 1:2 is integer. Why is that ? Christophe

1) I read the FAQ. It say use wine 1.4. Synaptic says 1.3 is the latest available. Is this a problem? I have the PPA loaded into synaptic. 2) Database says Galactic Civilizations (2004 game from Stardock) works, but doesn't for me. Of course the last test is about 5 years old. I can get it to install and I can get the program to start running, but after configuring the galaxy things crash. I

Hi, I'm trying to run the game Galactic Civilizations [http:// www.galciv1.com/] on my Ubuntu 6.10 system. Setup seemed to run fine, but running "wine galciv.exe" shows the initial videos (Strategy First splash, Stardock splash, game FMV intro), but then the screen flashes and crashes to the desktop, with desktop resolution changed to 1024x768 (usually 1280x1024). I'm guessing

hey here's something what i can't solve: i installed galactic civilizations ultimate blahblah and then tried to run it. well the screen goes blank and yay but then it's just crashes back to my beautiful desktop and totally pisses me off. any hints/suggestions? thanks ps. ubuntu 7.10

Hello! We are new in using R. We use the SVM module from the library ''e1071'' for training. Problem formulation: a classification has been performed using SVM module (linear kernel). Later, a new data set (test set) comparable to the training data shall be scaled in the same way as the training set (using the same scaling parameter set, but without using the SVM again

We have been looking for a way to notify our users when they are running low on disk quota, without sending them mail. WinPopup actually seemed like the best way, so my partner began looking at feeding quota output into smbclient -M when quota was getting tight. The only problem is that smbclient -M frequently fails to find the client's host name. The -I parameter will often fix it, but I am

Date: Wed, 23 Sep 1998 21:38:54 -0500 > From: "Daryl L. Biberdorf" <darylb@superserve.com> > To: samba@sam > Subject: machine name lookups > Message-ID: <3.0.5.32.19980923213854.008144b0@pop.a001.sprintmail.com> > > > We have been looking for a way to notify our users when they > are running low on disk quota, without sending them mail. > WinPopup

On Mon, May 9, 2016 1:14 pm, Gordon Messmer wrote: > On 05/09/2016 11:01 AM, Valeri Galtsev wrote: >> Thanks Gordon! Yes, I know, ZFS, of course. I hear it as you definitely >> will use zfs for "bricks" of distributed file system, right? > > > You could, I suppose, but I don't think its use case is limited to > that. There aren't many spaces where I

Hi, there is a suitable HowTo on how to create your own CA at: https://checkmk.com/de/blog/how-become-your-own-certificate-authority So long Thom Am 28.05.24 um 09:20 schrieb Matthias K?hne | Ellerhold Aktiengesellschaft via samba: > Hello Thomas, > > we've done the exact same thing: we have a few nextcloud instances bound > to Samba (now 4.20, but 4.19 worked too). >

I tried to install SWGB with pure Wine 0.9.19. Beside err:mmio:MMIO_ParseExtA No . in szFileName: "D:\\Install\\HOVER" fixme:bitblt:X11DRV_BitBlt potential optimization - client-side DIB copy a screen pops up with the text "The Install Shield Engine (Kernel.exe) couldn't be installed"+ "Write protected". Mike, can you install SWGB with Wine 0.9.19 and how?

Hello,        Dr. Simon Wood told me how to force a cubic spline passing through a point. The code is as following. Anyone  who knows how I can change the code to force the first derivative to be certain value. For example, the first derivative of the constrained cubic spline equals 2 at point (0, 0.6).        I really appreciate your help!        Thanks!                 Best             Victor   

I am trying to get Spore to work under WINE. I have installed the game plus the Galactic Adventures expansion without any problems, but when I try to run it I get a black screen and an error box stating "The program SporeApp.exe has encountered a serious problem and need to exit" Below is the output from the terminal. Any ideas on what might be causing this. I have update the graphics

Hello Thomas, we've done the exact same thing: we have a few nextcloud instances bound to Samba (now 4.20, but 4.19 worked too). You HAVE to use "ldaps://<FQDN>" in the "Host" field and "636" in the "Port" field. For the certificates issues: either you create a CA, create the samba certificates and add this CA to the trusted certificate