Displaying 20 results from an estimated 200 matches similar to: "covariance matrix"
2010 Nov 04
1
matlab code into R
Hello,
I'm trying to write the following matlab code into R:
N = zeros(n-1); for i=2:(n-1)
N(1,i) = 1/(pi * (i-1));
end for i=2:(n-2)
for j=i:(n-1) N(i,j) = N(i-1,j-1);
end;
end for i=2:(n-1)
end
for j=1:i N(i,j) = -N(j,i);
end;
any suggestions?
Thanks
can i just add the following line to my calculation N=1/(pi*(i-1)
--
Marcelo Andrade de Lima
UNIFESP - Universidade Federal
2010 Oct 24
1
140 packages in R Commander!!
Dear List
I just downloaded and installed R 2.12.0 and then installed R Commander .
First it got RCmdr and Car, and then suggested for other packages for
utilizing the full functionality- I clicked yes!
I got 140 packages installed!!! Cran Mirror was UCLA...
Here is the list.
Is this intentional- I can see some packages like snow and multicore which
are desirable but quite optional.(see list
2010 Oct 22
1
add diagonal line to covariance matrix
Hi,
Created a covariance matrix and i would like to add a diagonal line to the
plot, any suggestions?
Thanks
--
Marcelo Andrade de Lima
UNIFESP - Universidade Federal de São Paulo
Departamento de Bioquímica
Disciplina de Biologia Molecular
Rua Três de Maio 100, 4 andar - Vila Clementino, 04044-020
Lab +55 11 55764438 R.1188
Cell +55 11 92725274
mlima@unifesp.br
[[alternative HTML version
2010 Oct 27
2
add diagonal line
Hi,
I would like to add a line on the diagonal of a covariance matrix, is there
a quick way to do it besides abline?
Thanks!
--
Marcelo Andrade de Lima
UNIFESP - Universidade Federal de São Paulo
Departamento de Bioquímica
Disciplina de Biologia Molecular
Rua Três de Maio 100, 4 andar - Vila Clementino, 04044-020
Lab +55 11 55764438 R.1188
Cell +55 11 92725274
mlima@unifesp.br
[[alternative
2006 Apr 10
1
[RFC] Ideas and Questions in security updates ( portaudit, freebsd-update)
Hi all,
I use FreeBSD for severals years and this Project now have a
possibility the full security update (src) with
freebsd-update, is really great for Release users but is break for Stable
user.
Ok !!! Exist a possibility for apply manual patch and compile issue,
but for me problem existe in fix kernel issue in stable branch because is
require a update for last stable and this
2013 Jan 16
1
Mean calculation by two variables
Hello All,
I have a data frame (dput information below) with food item weight for fish
species.
I need to calculate the Mean proportion by weight of each food item for
each specie, as show in solution data frame (dput information below).
I use the ddply function (plyr package) in two steps. First calculate the
proportion of weight for each individual:
step1 = ddply (example, .(ID), transform,
2007 Feb 22
2
Configuring Asterisk.
Hello, I am using the last version on subversion, I already configured the
file sip.conf:
[6614]
username=6614
type=friend
secret=*********
qualify=no
port=5060
nat=yes
host=dynamic
dtmfmode=rfc2833
context=meuvoip
callerid=6614 <6614@meuvoip>
[6617]
username=6617
type=friend
secret=*********
qualify=no
port=5060
nat=yes
host=dynamic
dtmfmode=rfc2833
context=meuvoip
callerid=6617
2012 May 08
5
¿En qué campo de conocimiento usas R con mayor frecuencia?... (*Encuesta Online*)
Hola,
Acabo de crear una nueva encuesta para conocer con algo más de detalle el
campo en el que aplicamos R con mayor frecuencia.
En la anterior encuesta Rubén Gómez hizo la sugerencia y me ha parecido
interesante el pulsar la lista sobre esto.
De las diversas preguntas que aparecen en la lista y de aquellos que
comentan qué tipo de cosas están analizando he incluido una lista de 15
opciones de
2010 May 10
1
Random walk
Hi everybody,
I am trying to generate two random walks with an specific correlation,
for example, two random walks of 200 time steps with a correlation 0.7.
I built the random walks with:
x<-cumsum(rnorm(200, mean=0,sd=1))
y<-cumsum(rnorm(200, mean=0,sd=1))
but I don't know how to fix the correlation between them.
With white noise is easy to fix the correlation using the function
2006 Nov 03
1
Enc: FreeBSD and the new virtual machine-based rootkits
----- Mensagem encaminhada ----
De: Ricardo A. Reis <ricardo_bsd@yahoo.com.br>
Para: security@freebsd.org
Enviadas: Sexta-feira, 3 de Novembro de 2006 10:54:14
Assunto: FreeBSD and the new virtual machine-based rootkits
Hi All,
Recently i participated in Brazil on October 2006 The FIRST/TRANSITS and
II Latin American Incident Response Conference (COLARIS).
In the II COLARIS - Joanna
2006 Apr 13
1
Prototyping for basejail distribuition
Hi,
I attach 2 files in this email, the first is a Makefile and the second is
jail.conf.
For demonstre my idea i resolved create one "Pseudo Prototyping", for test
is necessary:
1 - Create dir /usr/local/basejail
2 - Copy Makefile to /usr/local/basejail
3 - Copy jail.conf to /etc
4 - The initial basejail is precompiled is distributed in CD1,
for simular basejail is necessary a
2011 Apr 16
2
AYUDA POR FAVOR
hola!
podrian ayudarme con esto:
Genere 1000 muestras aleatorias de tamaño n=10 de una población
normal con media
=2,5 y desviación 0,16. Con cada una de las muestras construya un
intervalo de
confianza al 95% para la media y para la varianza. Cuente que
porcentaje de los 1000
intervalos atrapan la verdadera media y la verdadera varianza poblacional
respectivamente. Comente los resultados
2005 Jul 14
2
[ronvdaal@zarathustra.linux666.com: Possible security issue with FreeBSD 5.4 jailing and BPF]
This message was sent to bugtraq today:
While playing around with FreeBSD 5.4 and jailing I discovered that it was
possible to put an ethernet interface into promiscious mode from within the
jailed environment, allowing a packetsniffer to gather data not meant for
the jailed box. This also affects FreeBSD 5.3 (tested) but not FreeBSD 4.x
This can be reproduced on boxes where BPF support is
2009 Jul 17
3
Ayuda con el paquete de text mining (TM)
Estimados, les escribo para consultar, lo siguiente:
Estoy haciendo un trabajo de text mining y necesito importar una serie de
textos para preprocesarlos, es decir eliminar los Stopwords, hacer stemming,
eliminar signos de puntuación etc. Esto último lo puedo realizar con los
datasets que trae la librería TM. Lo que no puedo lograr es importar texto
desde algún medio a pesar que existe funciones
2009 Jun 14
5
Partials views and instance variables go nil
Hi everyone!
Model: http://pastie.org/511290
Controller: http://pastie.org/511285
View new: http://pastie.org/511286
View _form: http://pastie.org/511284
When I hit submit button there''s an error for usuarios(users in
portuguese) instance. It does not seems to save usuarios even though it
seems to be posted by the form.
Error: http://pastie.org/511292
Need some help here guys plz
--
2006 Mar 07
3
Jails and loopback interfaces
Hi,
Running: Freebsd 6.0
I am wondering if it is possible to have acces to loopback ip in a jail. I
currently have a server running a jail. In the jail, there is a database and a
web server. I would like to be able to have the database only bind on a
loopback address and not on the jail's ip.
Can this be done and how?
Thanks
-Cyril
2004 Jan 29
10
Doubt about pattern
Hi All,
I have a very simple problem. I have several files in a same directory. I would like to send for an object only the files that finish in ".sens.". I execute the command below,
files <- dir(pattern="*.sens")
but it includes all of the files that have "sens", independent of they be in the end or in the middle of the name of the file. How could I solve
2012 May 08
0
Resumen de R-help-es, Vol 39, Envío 13
Hola, aunque he votado en Estadística general también he buscado la
opción de Psicologia.
El 08/05/2012 18:22,
r-help-es-request@r-project.org escribió:
> Envíe los mensajes para la
lista R-help-es a
> r-help-es@r-project.org
>
> Para subscribirse o
anular su subscripción a través de la WEB
>
https://stat.ethz.ch/mailman/listinfo/r-help-es
>
> O por correo
electrónico,
2013 Apr 23
0
Grupo de autoestudio de R y estadística con aplicaciones en lingüística
Hola, ¿qué tal?
Victor Peinado (http://nlp.uned.es/~victor/) y yo estamos organizando
un grupo de lectura. Junto con quienes se nos sumen, vamos a ir
leyendo el libro "Analyzing Linguistic Data: A practical introduction
to Statistics" (http://www.ualberta.ca/~baayen/publications/baayenCUPstats.pdf),
que trata de:
- R (instalación, gráficos, etc.)
- Métodos estadísticos con R (modelos
2005 Oct 23
1
Script for metropolitan
The script is corect ?
#!/bin/bash
/sbin/iptables -F -t mangle
/sbin/iptables -X
/sbin/iptables -t mangle -N mark_horiz_src
/sbin/iptables -t mangle -N mark_horiz_dst
/sbin/iptables -t mangle -A PREROUTING -i eth0 -j mark_horiz_src
/sbin/iptables -t mangle -A PREROUTING -i eth1 -j mark_horiz_dst
/sbin/iptables -t mangle -A OUTPUT -o eth0 -j mark_horiz_dst
/usr/local/bin/mipclasses -s