similar to: More clear statement about the question of how to generate regression matrix with correlation matrix

Hi: Does R have a function as gsorth is SAS, that perform a the Gram-Schmidt orthonormal factorization of the m ?n matrix A, where m is greater than or equal to n? That is, the GSORTH subroutine in SAS computes the column-orthonormal m ?n matrix P and the upper triangular n ?n matrix T such that A = P*T. or any other version of Gram-Schmidt orthonormal factorization? I search the help, but I

Hi, Why the qr() produces a negative Q compared with Gram-Schmidt? (note example below, except Q[2,3]) Here is an example, I calculate the Q by Gram-Schmidt process and compare the output with qr.Q() a <- c(1,0,1) b <- c(1,0,0) c <- c(2,1,0) x <- matrix(c(a,b,c),3,3) ########################## # Gram-Schmidt ########################## A <- matrix(a,3,1) q1 <-

Dear R community: I want to simulate a regression matrix which is generated from an orthonormal matrix X of dimension 30*10 with different between-column pairwise correlation coefficients generated from uniform distribution U(-1,1). Thanks in advance! Rui [[alternative HTML version deleted]]

Hi all: I have a quesion about ANOVA: Is SS(Sum of Square) of a specific factor constant with the number of factors changing? dat1 includes one factor g1,and g1's SS is called SS_g1_dat1. dat2 includes two factors g1,g2,and g1's SS is called SS_g1_dat2. My quesion is: Is SS_g1_dat1 equals to SS_g1_dat2? I have both "yes" and "no" reasons for the quesion,but

Hi, I'm testing version 1.1.beta10 and getting these assertions on deliver: file index-transaction.c: line 54 (index_transaction_finish_rollback): assertion failed: (t->mail_ref_count == 0) This was after an upgrade from a 1.0 release candidate. If you need I can try and reproduce this in a more controled environment to pinpoint the problem. Thanks, -- Nuno Lopes

Hi Timo, Here is the backtrace for your reference. I have already applied dovecot-97702c9c4111 changes to my 1.1 beta10 code base. I am running dovecot on FC7, gcc 4.1.2, mailbox is on NFS. Whenever I did UID SEARCH body "xxxx" imap crashes. Program terminated with signal 6, Aborted. #0 0x00110402 in __kernel_vsyscall () (gdb) bt full #0 0x00110402 in __kernel_vsyscall () No

It is not clear to me that one can. If the singular value decomposition of A is the triple product P d Q', then the singular value decomposition of A'A=S is Q d^2 Q'. The information about the orthonormal matrix P is lost, is it not? ********************************************************** Cliff Lunneborg, Professor Emeritus, Statistics & Psychology, University of Washington,

Hi. I have been looking at the PCAproj function in package pcaPP (R 2.4.1) for robust principal components, and I'm trying to interpret the results. I started with a data matrix of dimensions RxC (R is the number of rows / observations, C the number of columns / variables). PCAproj returns a list of class princomp, similar to the output of the function princomp. In a case where I can

hi: just a very simple quesion,how to do multiple multiplication in R x<-c(1,2,3,4,5,6) how to get 1*2*3*4*5*6? I checked the Arithmetic Operators in R,but did not found the operators for this function,anyway can do this except the loop? [[alternative HTML version deleted]]

hey listers! silly quesion: if I generate an RSA key on an NFS shared home directory, then cat >> it into the .ssh/authorized_keys file in the same location, shouldn't I then be able to ssh into each host that shares the NFS home directory without entering a passphrase (assuming the key doesn't have one)? and assuming the permissions on the authorized_keys file belong to the user

Hello, when running diff for 'dovecot -n' outputs from beta10 and beta11(for the same config file), I noticed that 'dovecot -n' beta11 output does not show anymore the following parameters, which are set to non-default values(and which 'dovecot -a' shows): login_processes_count login_max_processes_count first_valid_uid first_valid_gid cache_size cache_ttl

Hi! I''m new to Rails! Rails rox! 1 quesion so far: I have :email attribute in User model. I dont'' want :email to allow to be updated. How do i do this with Rails? Do I have to implement required validation manually? Thanks! --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails:

I''ve got a super basic quesion about getting rails up and running on a host. I''m following this basic howto: http://wiki.rubyonrails.com/rails/pages/HowtoUseSymLinksToGraftRailsOntoYourWebsite in order to get a rails app up and running on my host, phpwebhosting (oh the irony). I''ve got my app sitting in /home/username/todo (todo is the app) I''ve created my

General goal: Write R code to find the inverse matrix of an nxn positive definite symmetric matrix. Use solve() to verify your code works. Started with a 3x3 matrix example to build the code, but something dosen't seem to be working. I just don't know where I am going wrong. ##Example matrix I found online A<-c(4,1,-1,1,2,1,-1,1,2) m<-matrix(A,nrow=3,ncol=3) ##Caculate the eigen

Hi, I am playing with hwriter examples given in "example" page. Here's what I've done: > library (hwriter) > > p = openPage ('table.html') > hwrite (1:5, p) > hwrite (iris[1:3, 1:3], p, row.bgcolor='#ffdc98') > closePage (p) > > browseURL('table.html') What I get is not as nice as what I see via the "example" page. I

A very ignorant question, sans doute. I get my certificates from cacert.org, to whom I am very grateful. I follow what I take to be the official procedure, first creating <server>.key and <server>.csr on my server and then getting <server>.crt by going to Server Certificate=>New at the cacert site. I then place the key certficate *.key in /etc/pki/tls/private/ and what I

Hey, R-listers, I have a question about determining the orthogonal basis vectors. In the d-dimensinonal space, if I already know the first r orthogonal basis vectors, should I be able to determine the remaining d-r orthognal basis vectors automatically? Or the answer is not unique? Thanks for your attention. Fred

http://dovecot.org/releases/1.1/beta/dovecot-1.1.beta10.tar.gz http://dovecot.org/releases/1.1/beta/dovecot-1.1.beta10.tar.gz.sig Changes since beta9: - dotlock_use_excl=yes is now the default. I think this should work in all NFS setups that are in use nowadays. O_EXCL has worked since NFSv3. - fs quota: Added "noenforcing" option - Fixed compiling with non-gcc - Fixed quota plugin

Hi all, I am sorry if this is a very basic quesion, but I have no experience with analyzing spatial data and could not find the right function/package quickly. Any hints would be much appreciated. I have a matrix of spatial point patterns like the one below and want to find the number of independent components (if that's the right term) in that matrix (or in that image). x=matrix(c(0,1,0,0,0,

Dear All: Could anybody help me figure out why I get the Error message below while I running the example code of bugs() function in R2OpenBUGS packages? I have tried the code both in Win 7 and Ubuntu 12.04, but they show the same message. My R version is 2.15.1 in win7 and 2.15.0 in Ubuntu. Many thanks ! Best, Yilong > schools.sim <- bugs(data, inits, parameters, model.file,+