similar to: what does the sum of square of Gaussian RVs with differen t variance obey?

>From basic statistics principle,we know,given several i.i.d Gaussian RVs with zero or nonzero mean,the sum of square of them is a central or noncentral Chi-distributed RV.However if these Gaussian RVs have different variances,what does the sum of square of them obey? Thanks in advance.

Greetings. Yesterday I managed to jury-rig a system to get a table out of R and import it into Nisus Writer Express (a word processor for Mac OS X). What I came up with is brittle, since it depends on an AppleScript script which has to be in a specific location and on no one touching the computer, since the AppleScript remotely controls Nisus Writer Express rather blindly and will make

Hello all, I was wondering if anyone is aware of formal approaches and tools for comparing partial response curves produced in GAM? My interest is in determining if two partial response curves are "statistically" different. I recognize that point-wise standard error estimates can be produced using the GAM package but Im not certain how to translate this into a statistical test for the

Hello, I am a total beginner when it comes to rails and would like to know are there any issues with porting rails from freebsd to windows? This is the error that I have Bad file descriptor - /tmp/mysql.sock I am not sure if this would help or not but I am currently on a cygwin environment thanks if anyone can help -- Antoine W. Solomon Jr. -------------- next part -------------- An HTML

Greetings. Yesterday I decided to try out Rcmdr, but it refused to load. I traced the problem to the library tcltk, which when I tried to load it told me this: > > library(tcltk) > Loading Tcl/Tk interface ... Error in fun(...) : > Can't find a usable init.tcl in the following directories: > @TCL_IN_FRAMEWORK@ @TCL_IN_FRAMEWORK@ > > > > This probably

How does one define PDFs as yet undefined in R, such as the ex- gaussian, the sum of two RVs, one exponential, one Gaussian? The PDF would then be the convolution of an exponential PDF, dexp(), and a normal, dnorm(). Kindly cc me in your reply to r-help. Thanks, _____________________________ Professor Michael Kubovy University of Virginia Department of Psychology USPS: P.O.Box 400400

Hi all- Some recent change...perhaps a windows update, or perhaps a change in the network on which I use my computer....has made it impossible for me to start R. When I try to start the program, I get a message that says "Fatal error: invalid HOMEDRIVE". Any ideas on how to fix this? Thanks much Chris ******* Chris Solomon Center for Limnology Univ. of Wisconsin (715) 356-9494

I don't think that GDB support is even present in the latest version of the old JIT in trunk. It used to have code to register emitted functions with GDB in a way that let GDB find the function name and EH frame information, but that got taken out back in January (r147615). As it stands now, I don't think GDB would provide any useful information at all about code emitted by the old JIT.

We are preparing to build a new Web site and the potential consultant we may be hiring has strongly recommended that we don''t go with our initial planning with asp.net but go with Ruby on Rails. We are not familiar with Ruby but understand their is a strong on-going interest with its development and use. Our concern is that if we need consulting services in the future, are their local

Hi, I have tried using the VorbisEncoder class available with the vorbis-java port of the ogg-vorbis and shout and the resulting ogg file from the encoder is jumbed up and distorted. I have tried compiling the sources and changing the quality in the source with no success. Has anyone managed to use the encoder successfully. if so your response will be of great. -- Solomon Kariri, Software

Hi, Does anyone know of a package in R that has a function to convert network data (e.g. an adjacency matrix or ) from 2-mode to 1-mode? I am conducting social network analysis. I know that Pajek has this function under Net --> Transform --> 2-mode to 1-mode --> Rows. I have searched the documentation under packages 'sna', 'network', 'igraph', and

On Nov 24, 2012, at 3:50 PM, Rafael Espíndola wrote: > On 24 November 2012 17:36, Chris Lattner <clattner at apple.com> wrote: >> As others have said, unfortunately it is premature to remove the old jit. I don't know of anyone using the EH code though... It can almost certainly be removed! > > Cool. I will remove the EH bits by the end of the week if no one complains.

Hi, I was really interested in the java version of the same since I wanted to use it in my java application in a platform independent way. Anybody who have managed to use the java port to encode wav to ogg, this is only audio, can assist me to solve my problem. I have been looking at the code and the svn but no updates seem to be available. Some guidance on what could be the problem on the source

Hello- I'm trying to do some repeated measures ANOVAs. In the past, using SAS, I have used the framework outlined in Littell et al.'s "SAS System for Mixed Models", using the REPEATED statement in PROC MIXED to model variation across time within an experimental unit. SAS allows you to specify different within-unit covariance structures (e.g., compound symmetric, AR(1), etc.) to

Dear Soren and R users: I am trying to use the summaryBy function with weights. Is this possible? An example that illustrates what I am trying to do follows: library(doBy) ## make up some data response = rnorm(100) group = c(rep(1,20), rep(2,20), rep(3,20), rep(4,20), rep(5,20)) weights = runif(100, 0, 1) mydata = data.frame(response,group,weights) ## run summaryBy without weights:

Hi fellows, I ve got the following problem. I have one linux with samba 3.10 on running on it. I also have two windows 2003 servers with telnet client runnig ot it which are used to run MS-DOS Clipper program. Samaba server is used for file server. My problem is the following. All conections from each of this machines are made trough one pid and i cannot kill this pid if samoone locks any file

Hi, Please start with sampleenc.c/sampledec.c from the manual. Jean-Marc Andre Kirchner a ?crit : > Hi all, > > I have just started playing with speex, and come up with the following code, which just encode a frame of 160 shorts, and the decode it. > > For some reason the decoded sample is completely different than the original one. is my code wrong? If so what? Or is it a

Sorry for the contents not relating to R. Assume there are N i.i.d zero-mean complex gaussian random variables(RVs),as w(i),0<=i<N} with known variance,from which one can generate another N RVs,as R(0)=sum over i {w(i)*w'(i)} R(1)=sum over i {w(i+1)*w'(i)} ... up to R(N-1)= w(N-1)w'(i) where w'(i) is the complex conjugate of w(i). (from viewpoint of signal

Im talking about this http://downloads.xiph.org/releases/vorbis-java/vorbis-java-1.0.0-beta.tar.gz Do you know it? On Thu, Dec 10, 2009 at 8:56 PM, Monty Montgomery <monty at xiph.org> wrote: > On Fri, Dec 4, 2009 at 5:28 AM, solomon kariri <solomonkariri at gmail.com> > wrote: > > Hi, > > I have tried using the VorbisEncoder class available with the vorbis-java

Dear R-users, I wondered if anyone has extended GLMMGibbs to include correlated random effects, and if so, whether they would be willing to let me use their code? Jonathan Myles has no plans to extend glmm in this manner within the foreseeable future. With thanks, Patty -- -------------------------------------------------------------------------------- Assoc Prof Patty Solomon