similar to: Port package

Dear all, I would like to use the Levenberg-Marquardt algorithm for non-linear least-squares regression using function nls.lm. Can anybody help me to find a a way to compute confidence intervals on the fitted parameters as it is possible for nls (using confint.nls, which does not work for nls.lm)? Thank you for your help Michael

Dear WizaRds, I would like to fit a curve to ten points with nls() for one unknown parameter gamma in the Kahnemann/ Tversky function, but somehow it won't work and I am unable to locate my mistake. p.kum <- seq(0.1,1, by=0.1) felt.prob.kum <- c(0.16, 0.23, 0.36, 0.49, 0.61, 0.71, 0.85, 0.89, 0.95, 1) ## how to find a function that fits these points nicely? plot(p.kum,

I was wondering if there is way to place constraints upon the "plinear" algorithm of nls, or rather is there a manner in which this can be achieved because nls does not allow this to be done. I only want to place constraints on one of the nonlinear parameters, a, such that it is between 0 and 1. I have attempted to use a=pnorm(a*) , but then the fitting procedure becomes

Hello, i have a problem with the function nls(). This are my data in "k": V1 V2 [1,] 0 0.367 [2,] 85 0.296 [3,] 122 0.260 [4,] 192 0.244 [5,] 275 0.175 [6,] 421 0.140 [7,] 603 0.093 [8,] 831 0.068 [9,] 1140 0.043 With the nls()-function i want to fit following formula whereas a,b, and c are variables: y~1/(a*x^2+b*x+c) With the standardalgorithm

Hi, I am using SAM (from siggenes_1.2.11 package) method to select genes from a microarray data set. After installing the latest R2.4.0 on my computer, to my surprise the results are totally different from that calculated using R2.1.1. Even the example code doesn't work the same way under these two versions of R. Does anybody know what is going on? Thanks for any suggestions.

Hi All, Is the Levenberg-Marquardt algorithm available in R. This method combines the steepest descent algorithm and Newton's method. Thanks in Advance, Dermot MacSweeney. ************************************************************** Dermot MacSweeney NMRC, Email: dsweeney at nmrc.ucc.ie Lee Maltings, Tel: +353 21 904178 Prospect Row, Fax: +353 21 270271 Cork, WWW:

I'm wondering what packages exist to implement nonlinear least squares regression in R other than 'nls'. Are there packages which implement methods to estimate the optimum values of the parameters which do not use the Gauss-Newton algorithm e.g. use Nelder Mead. In particular, I'd be interested where this is done where the methods of the plinear algorithm are also used (the initial

Hello! I am running R-2.3.1-i386-1 on Slackware Linux 10.2. I am a former matlab user, moving to R. In matlab, via the cftool, I performed nonlinear curve fitting using the method "nonlinear least squares" with the "Trust-Region" algorithm and not using robust fitting. Is it possible to perform the same analysis in R? I read quite a lot of R documentation, but I could not find

The documentation for nls says the following about the starting values: start: a named list or named numeric vector of starting estimates. Since R 2.4.0, when 'start' is missing, a very cheap guess for 'start' is tried (if 'algorithm != "plinear"'). It may be a good idea to document that when algorithm = "port", if start is a named

Hello, interesting to hear. What version of NUT, what way of installation on Windows, what sort of UPS (USB or some other)? Asking because this info is lacking and currently there are a few variants to consider: * an MSI package based on NUT v2.6.5 (last released about 9 years ago as "2.6.5-6"), * results of re-integration of that codebase into current NUT master (some months after

Hi all !!! I have a firewall bridge (not router) with two nics that filter p2p with ipp2p. All works fine but now I need to add a third nic to route all p2p traffic through this nic. It is that possible with a bridge ? Later (with other server) connect to this nic I do loading balancing with two adsl lines to route all p2p traffic. Any hint ? Any howto ? Thanks in advance. roberto --

Hi -- I'm connecting 64bit win 7 professional to an SGI tezro running samba 3.5.8. I connect fine, and everything works except, I cannot read or copy large (40 Mb) files. This used to work when I ran win XP and samba 2. I had to upgrade to version 3 for win 7 to connect. Any clues would be appreciated. Ellis Golub -- ============================================================= Ellis

Hi all !!! I would like to install asterisk in Xen domU using TDM400 hardware. Somebody know a howto or tutorial about that ? Thanks in advance roberto -- Ing. Roberto Pereyra ContenidosOnline http://www.contenidosonline.com.ar

Hi I would like to use shorewall for my bridge firewall. I just read the howto http://www.shorewall.net/bridge.html But in this howto there are only one net behind the bridge and have two nets behind my bridge. Can I use shorewall with two nets behind the bridge. Thanks in advance. roberto -- Ing. Roberto Pereyra ContenidosOnline Servidores BSD, Solaris y Linux Soporte técnico ISPs

I've written a series of functions that evaluates an integral from -inf to a or b to +inf using equally spaced quadrature points along a normal distribution from -10 to +10 moving in increments of .01. These functions are working and give very good approximations, but I think they are computationally wasteful as I am evaluating the function at *many* points. Instead, I would prefer to use

HI I have a bridge running ipp2p blocking Ares traffic and others protocols. This bridge works fine buts since two weeks can''t block Ares traffic. All protocols block fine but Ares not (upload and download). Somebody are using ipp2p blocking the latest Ares version ? My system settings are: kernel : 2.6.13 iptables: 1.3.3 ipp2p: 0.81 rc1 iptables -L -v output: Chain FORWARD

Hi I running a rsync server using version 2.6.3pre1 in a Solaris 10 server. When I try to use ssh to encrypt my data, the rsync client fails with this message: rsync -avz -e ssh winbox.exe zone43@zone43.gridzones.com::backups Password: rsync: connection unexpectedly closed (0 bytes received so far) [sender] rsync error: error in rsync protocol data stream (code 12) at io.c(434) My config

Hi I have a Raid 1 centos 4.4 setup and now have this /proc/mdstat output: [root at server admin]# cat /proc/mdstat Personalities : [raid1] md2 : active raid1 hdc2[1] hda2[0] 1052160 blocks [2/2] [UU] md1 : active raid1 hda3[0] 77023552 blocks [2/1] [U_] md0 : active raid1 hdc1[1] hda1[0] 104320 blocks [2/2] [UU] What happens with md1 ? My dmesg output is: [root at

Hello A simple question Is virtualization (Xen) in CentOS stable for big developments ? Somebody is using it for important servers ? Would have to wait for an update? Thanks in advance roberto -- Ing. Roberto Pereyra ContenidosOnline http://www.contenidosonline.com.ar Get secure managed email for your own domain with Hushmail Business - http://www.hushmail.com/business?l=503&a=3211

Hi !! I marking packets in a bridge: Mark outbound www packets from clients: /usr/local/sbin/iptables -A PREROUTING -t mangle -m physdev --physdev-in eth1 -p tcp --dport 80 -j MARK --set-mark 2 How I can know if this packets are marked ? roberto -- Ing. Roberto Pereyra ContenidosOnline Looking for Linux Virtual Private Servers ? Click here: