Displaying 20 results from an estimated 200 matches similar to: "Common principle components"
2007 Nov 26
1
CPCA?
It would be great to know if and where an R code for Common Principal Component Analysis is available.
Thanks,
Daniel
Daniel Berner
Redpath Museum & Dept. of Biology
McGill University
859 Sherbrooke St. W.
Montreal, QC, H3A 2K6
Canada
Phone: 514-398-4086 ext. 00908
Fax: 514-398-3185
Email: daniel.berner at mail.mcgill.ca
2003 Sep 15
1
rsyncing fifos and sockets on FreeBSD
Hi there,
there is a problem (which as far as i know) is already known with rsync on
FreeBSD: it is not possible to rsync neither fifos nor unix domain
sockets (note that you have to be root there):
# mkfifo test
# file test
test: fifo (named pipe)
# rsync -a test test2
mknod test2 : Invalid argument
rsync error: some files could not be transferred (code 23) at main.c(620)
# file /var/run/log
2009 Nov 27
6
Learning R - View datasets
Hi All,
I am making a serious effort to try to learn R, but one hurdle I am facing is that I need to "see" the data as I walk through the examples in the packages. For instance, many examples on the web start by a command like data("wines"). How can I actually view what the dataset looks like prior to transformations and analysis? I have tried to use edit() , print, and
2002 Aug 05
1
samba pdc- dialin allowed flag?
I would like to use a genuine Windows 2000 server as my PPTP server
(getting poptop to work correctly is annoying the hell out of me) which
needs to authenticate off of a Samba server configured as a PDC. A
Windows-based PDC has a flag for "dialin access allowed" for each user.
I searched the Samba archives and see several posts over the years that
say it "sounds easy enough to
2004 Jun 28
3
How to determine the number of dominant eigenvalues in PCA
Dear All,
I want to know if there is some easy and reliable way
to estimate the number of dominant eigenvalues
when applying PCA on sample covariance matrix.
Assume x-axis is the number of eigenvalues (1, 2, ....,n), and y-axis is the
corresponding eigenvalues (a1,a2,..., an) arranged in desceding order.
So this x-y plot will be a decreasing curve. Someone mentioned using the elbow (knee)
2000 Mar 22
4
density ellipses?
Hello,
has anybody written a function to plot density ellipses (95%, 99% or
anything) in a scatterplot? I found nothing in any package, nor in the list
archives.
There does seem to be a contributed package "ellipse" for S-Plus (on
S-Archive), but it does a lot more than what I would need. Still, if anybody
ported it to R, I'd be grateful for a link. I'm a bit afraid to try the
2002 Mar 14
0
rsync 2.5.2 doens't compile on Tru64 5.1 and FIFO, socket files
Hi all,
I have rsync 2.5.1 (with a patch from albert chin - china@thewrittenword.com)
installed OK on Tru64 5.1 UNIX.
When I run rsync, it doesn't work with special files (FIFO, socket,...)
Here is the error:
mknod cluster/members/member1/dev/binlogdmb : Invalid argument
mknod cluster/members/member1/dev/log : Invalid argument
mknod cluster/members/member1/dev/printer : Invalid
2008 Feb 14
1
Guiding principle - adapting TO the environment or adapting the environment
Guys,
I need some input on best practices from the group regarding choosing
between a reactive and proactive approach when determining setup for a
host.
Let me explain. I have an "apt" module that takes care of setting up
common apt settings and provide the basic "sources.list" for the
managed hosts - debian on servers and ubuntu on desktops.
I have chosen to keep the source
2008 Mar 05
2
Principle component analysis
Thanks to Mr.Liviu Androvic and Mr.Richard Rowe helped me in PCA.
Because I have just learn R language in a few day so I have many problem.
1) I don't know why PCA rotation function not run although I try many times.
Would you please hepl me and explain how to read the PCA map (both of
rotated and unrotated) in a concrete example.
2) Where I can find document relate: Plan S(A), S(A*B),
2010 Jun 12
0
[PATCH] ActionDispatch MemCacheStore violates encapsulation principle
When pass :cache param to ActionDispatch::Session::MemCacheStore, it should
be removed from options, otherwise it remains "published". This violates the
OOP encapsulation principle.
I created a LH ticket with a patch
http://bit.ly/cGDaWs
Luca
--
lucaguidi.com
twitter.com/jodosha
--
You received this message because you are subscribed to the Google Groups "Ruby on Rails:
2011 Dec 21
0
the principle of the vm snapshot based on qemu-dm
Hi everyone,
I'm not clear about the principle of the vm snapshot based on qemu-dm, so the following below maybe a joke. Sorry for that...
register_savevm() included in ioemu-qemu-xen/hw/*.c covers various kinds of hardware in order to save the state of current running vm. In this way, the file saved by the cmd of 'xm save domain snapshot.save' is of large size and the
2016 Jun 08
1
[Bug 96443] New: Missrendering of Reflections in Talos Principle
https://bugs.freedesktop.org/show_bug.cgi?id=96443
Bug ID: 96443
Summary: Missrendering of Reflections in Talos Principle
Product: Mesa
Version: git
Hardware: Other
OS: All
Status: NEW
Severity: normal
Priority: medium
Component: Drivers/DRI/nouveau
Assignee: nouveau at
2005 Apr 05
2
Principle Component Analysis in R
Dear R
Should I be concerned if the loadings to a Principle Component Analysis are
as follows:
Loadings:
Comp.1 Comp.2 Comp.3 Comp.4
X100m -0.500 0.558 0.661
X200m -0.508 0.379 0.362 -0.683
X400m -0.505 -0.274 -0.794 -0.197
X800m -0.486 -0.686 0.486 0.239
Comp.1 Comp.2 Comp.3 Comp.4
SS loadings 1.00 1.00 1.00 1.00
Proportion Var 0.25 0.25 0.25
2008 Mar 06
2
Principle component analysis function
Dear All,
In a package, I want to use PCA function. The structure I used follow this
page: http://www.statmethods.net/advstats/factor.html.
fit<-principle(mydata, nfactors=9, rotation=TRUE)
or:
result<-PCA(mydata)
But I don't known why R language in my computer noticed: "not found
principle", "not found PCA".
I download and installed
2010 Jan 07
1
logistic regression based on principle component analysis
Dear all:
I try to analyse a dataset which contain one binary response variable and serveral predict variables, but multiple colinear problem exists in my dataset, some paper suggest that logistic regression for principle components is suit for these noise data,
but i only find R can done principle component regression using "pls" package,
is there any package that can do the task i
2013 Apr 25
1
Weighted Principle Components analysis
Hello!
I am doing Principle Componenets Analysis using "psych" package:
mypc<-principal(mydata,5,scores=TRUE)
However, I was asked to run a case-weighted PCA - using an individual
weight for each case.
I could use "corr" from "boot" package to calculate the case-weighed
intercorrelation matrix. But if I use the intercorrelation matrix as input
(instead of the
2017 Mar 17
0
RFC: (in-principle) native unquoting for standard evaluation
Interesting idea. Lazy and non-standard evaluation is going to happen; the
language needs a way to contain it.
I'll extend the proposal so that prefixing a formal argument with @ in
function() marks the argument as auto-quoting, so it arrives as a language
object without use of substitute(). Kind of like how '*' in C declares a
pointer and dereferences one.
subset <- function(x,
2017 Mar 19
0
RFC: (in-principle) native unquoting for standard evaluation
On Mon, Mar 20, 2017 at 7:36 AM, Radford Neal <radford at cs.toronto.edu> wrote:
> Michael Lawrence (as last in long series of posters)...
>
>> Yes, it would bind the language object to the environment, like an
>> R-level promise (but "promise" of course refers specifically to just
>> _lazy_ evaluation).
>>
>> For the uqs() thing, expanding calls
2001 Mar 29
1
Question regarding Principle Component Analysis and R for Windows
Hi there,
I am a post-grad (Arts!) student trying to get to grips with R...
Though I am not statistically trained my research involves working with a
large amount of numerical data currently held in Excel. I have been told by a
Stats trained advisor that I should examine my data by some sort of
Pricincipal Component Analysis.
My questions then are (all apologies if they seem simple but I am
2012 Sep 23
1
ruby koans don't understand the principle sandwhich code
hello,
Im still working on ruby koans.
Now I have to do some sandwhich code.
The exercise looks like this :
require File.expand_path(File.dirname(__FILE__) + ''/edgecase'')
class AboutSandwichCode < EdgeCase::Koan
def count_lines(file_name)
file = open(file_name)
count = 0
while line = file.gets
count += 1
end
count
ensure
file.close if