similar to: PCA with not non-negative definite covariance

Hi all, I've been trying to figure out how to superimpose a histogram on a biplot that shows the relative contribution of each axis. I have been using the NIPALS function (http://biomserv.univ-lyon1.fr/~dray/ files/softwares/nipals.R) to run principal component analyses. Here is a toy example. source("http://biomserv.univ-lyon1.fr/~dray/files/softwares/nipals.R")

Hi everybody! Is there any package or functions to make Partial Least Squares analysis with R? Thanks a lot Luis -------------------------------------------- sapo.pt/kitadsl -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or

I''d like reviewers for: 6734731 vif-vnic instances can race against each other 6734123 xpvd-event logging is dismal The webrev is at http://dme.org/solaris/webrev/xvm-script-cleanup.

Hi all, I would like to do some QSAR analysis (quantitative structure activity relationship). I need to use some Partial Least Squares (PLS) regression, but I have not seen this option on the R-project. Is it possible to do this kind of regression on R? thank you in advance best regards, olivier [[alternate HTML version deleted]]

We see absolutely dismal performance from Canberra to Perth via Aarnet or Grangenet (gig connections across the country). With standard rsync on a tuned tcp stack, we see about 700k/s. I started playing with the --sockopts and have increased the performance to 1.4M/s which is better, but still way off the pace. There are similar patches for ssh at

Hello i need some precision about nipals in the chemometrics package in R . When i use nipals in chemometrics i obtain T and P matrix. I really don't understand what to do with these two matrix to obtain the scores for every the component (like in spss fo example) Comp1 Comp2 Comp3 quest1 0,8434 0,54333 0,3466 quest2 0,665 0,7655 0,433 Thank you very

On Thu, Jul 21, 2016 at 12:23:01PM -0500, Russell R Poyner wrote: > One more data point for comparison > > I installed the stock samba 4.2 rpm on a centos 7 machine and ran > the same diskspd tests against a share configured with: > vfs objects = aio_pthread > aio read size = 1024 > aio read size = 1024 > > smb2 leases = yes > > I get 27MB/s with 4k

Dear list members; The code given below corresponds to the PCA-NIPALS (principal component analysis) algorithm adapted from the nipals function in the package chemometrics. The reason for using NIPALS instead of SVD is the ability of this algorithm to handle missing values, but that's a different story. I've been trying to find a way to improve (if possible) the efficiency of the code,

Am 21.07.2016 um 20:56 schrieb Russell R Poyner: > Jeremy, > > I think this is exactly a complex interaction between FreeBSD and > Samba. Best guess would be some system call that is fast in linux but > slow in FreeBSD holding things back. > > Russ > > On 07/21/2016 01:00 PM, Jeremy Allison wrote: >> On Thu, Jul 21, 2016 at 12:23:01PM -0500, Russell R Poyner

Hi, I''m seeing what can only be described as dismal striped write performance from lustre 1.6.3 clients :-/ 1.6.2 and 1.6.1 clients are fine. 1.6.4rc3 clients (from cvs a couple of days ago) are also terrible. the below shows that the OS (centos4.5/5) or fabric (gigE/IB) or lustre version on the servers doesn''t matter - the problem is with the 1.6.3 and 1.6.4rc3 client kernels

I've recently installed Samba 2.2.5(from source) on a linux 2.4.19 system and am having great difficulty configuring it to work with w2k clients. My inital goal is to have Samba act as a PDC so that I may have logins to the network and provide basically a single public disk share and a home share per user. After two and a half days of dismal failures I have tried to simply get the Samba

On Wed, Jan 13, 2016 at 16:25:14 +0100, Martin Kletzander wrote: > On Wed, Jan 13, 2016 at 10:18:42AM +0000, Richard W.M. Jones wrote: > >As people may know, we frequently encounter errors caused by libvirt > >when running the libguestfs appliance. > > > >I wanted to find out exactly how frequently these happen and classify > >the errors, so I ran the

As people may know, we frequently encounter errors caused by libvirt when running the libguestfs appliance. I wanted to find out exactly how frequently these happen and classify the errors, so I ran the 'virt-df' tool overnight 1700 times. This tool runs several parallel qemu:///session libvirt connections both creating a short-lived appliance guest. Note that I have added Cole's

One of my customers handed me a copy of this paper and asked why are we using xen if it is so slow... http://morse.colorado.edu/~tlen5710/12s/VMware.pdf which is a fairly damning report of performance under Xen in comparison to VMWare, citing worse than 50% overhead of Xen in comparison to physical. Has anyone seen this paper before? James

Friends, Is there a Partial Least Squares package implemented in R? Thanks, Lana [[alternative HTML version deleted]]

I have been using a laptop computer of Pentium III 1.13 Ghz. I heard that AMD's Athlon has excellent floating point capacity. So I bought a Athlon 2200+ laptop yesterday. I expected that new Athlon 2200+ will be twice as fast as the P III 1.13 GB. I ran a R simulation program and the new computer is only 30% faster, in fact slightly slower than a Celeron 1.50 GB laptop. I am very disappointed

Hello, I have a matrix with 267 columns, all rows of which have at least one column missing (NA). All three methods i've tried (pcs, princomp, and prcomp) fail with either "Error in svd(zsmall) : infinite or missing values in 'x'" (latter two) or "Error in cov.wt(z) : 'x' must contain finite values only" The last one happens because of the check if

On Tue, Jul 19, 2016 at 12:42:53PM -0700, Jeremy Allison wrote: > On Tue, Jul 19, 2016 at 12:49:09PM -0500, Russell R Poyner wrote: > > I'm tuning a samba 4.3 install on freebsd and I'm confused about aio > > settings. > > > > I've loaded the freebsd aio kernel module and tried various values > > or aio read size and aio write size, but it seems to

Please could someone point me in the right direction as I appear to be having a total mental block with fairly basic PCA problem! I have a large dataframe where rows represent independent observations and columns are variables. I am wanting to perform PCA sequentially on blocks of nrows at a time and produce a graphical output of the loadings for the first 2 EOFs for each variable. I'm sure

Hi R-users, I am new to R environment.I want to carry out a correspondence analysis on a contigency table with 64 columns and 298 observation of Environmental data.In many cells of the contigency table the frequency is just the value '1'. I got the following error. > CAIV(Eplankton) Error in if (L[i, j] < 0) return("Table L must contain non-negative numbers") :