Displaying 20 results from an estimated 4000 matches similar to: "Bivariate lme"
2002 Feb 20
2
Code for bivariate Poisson regression?
Dear RHelpers,
Does anyone know of any R code to perform bivariate Poisson regression
(including random effects)?
Best wishes
Simon
Simon D.W. Frost, M.A., D.Phil.
Department of Pathology
University of California, San Diego
Antiviral Research Center
(Formerly: UCSD Treatment Center)
150 W. Washington St., Suite 100
San Diego, CA 92103
USA
Tel: +1 619 543 8080 x275
Fax: +1 619 298 0177
Email:
2004 Oct 22
1
Assist on R-2.0.0 /64 bit AMD/SuSE 9.1
Hi Folks,
I compiled and installed Assist-0.1.0; I'm using R-2.0.0 running on SuSe
Linux, on a dual AMD64 machine. However, I (apparently randomly) get
segmentation faults when I use cubic2. Any ideas?
Thanks
Simon
--
Simon D.W. Frost, MA DPhil
Adjunct Assistant Professor
Department of Pathology
University of California, San Diego
UCSD Antiviral Research Center
150 W. Washington St.
San
2006 Dec 21
0
Spline models in sspir
Dear R-Help,
I'm trying to learn the sspir package for state space modeling. Has
anyone coded a cubic spline smoother (continuous time) in state space
format in sspir? The syntax for setting up the various matrices would be
really helpful.
Best
Simon
--
Simon D.W. Frost, D.Phil.
Assistant Adjunct Professor of Pathology
University of California, San Diego
Mailcode 8208
UCSD Antiviral
2006 Feb 28
1
Collinearity in nls problem
Dear R-Help list,
I have a nonlinear least squares problem, which involves a changepoint;
at the beginning, the outcome y is constant, and after a delay, t0, y
follows a biexponential decay. I log-transform the data, to stabilize
the error variance. At time t < t0, my model is
log(y_i)=log(exp(a0)+exp(b0))
at time t >= t0, the model is
log(y_i)=log(exp(a0-a1*(t_i - t0))+exp(b0=b1*(t_i -
2005 Mar 26
1
test65 "deliver" LDA bug
Hello.
I've tried to implement dovecot's deliver LDA to my home mailserver.
I've run into troubles :)
dovecot-deliver.conf:
-- snip --
mail = maildir:%h/Maildir:INBOX=maildir:%h/Maildir
mbox_read_locks = flock
mbox_write_locks = flock
-- snip --
when i run:
deliver -d bfg < email.txt dovecot delivers message to ~/Maildir/maildir/new
It acctually creates "maildir"
2004 Nov 09
2
Data Censoring and Normality Tests
Hello,
I would like to know if there is a function in R that will test for
normality and handle censored data sets. Currently, I evaluate each
censored data set by the extent to which a normal scores plot
approximate a straight line. For complete data sets I use
shapiro.test().
Below is an example of a censored data set.
data1<-c(0.00, 0.00, 0.00, 5.86, 5.17, 8.17, 5.12, 4.92, 7.08,
2000 Mar 14
1
Error in lme? (PR#488)
Full_Name: Simon Frost
Version: 1.0.0
OS: Windows
Submission from: (NULL) (129.215.60.79)
Hi everyone,
I've just installed R for Windows - I've previously been using it on Linux -
and I've run into a problem when using lme.
The lme routine throws up an error in the getGroups.data.frame command,
complaining about an error in the formula:
Error in getGroups.data.frame(dataMix,
2002 Jan 16
0
problems with rh 7.2
hello!
i'm using redhat 7.2 with ext3 as my primary fs on kernel 2.4.17 +
grsecurity + acl
after 2-3 days of uptime i'm expiriencing problems... i attached below
excert from my system logs.
machine stops responing for a few seconds and after then it looks, like it's
in normal operation again. the only problem is load, which is incrementing
constantly, but cpu is 99% idle...
2002 Jan 16
1
crashing with ext3
hello!
i'm using redhat 7.2 with ext3 as my primary fs on kernel 2.4.17 +
grsecurity + acl
after 2-3 days of uptime i'm expiriencing problems... i attached below
excert from my system logs.
machine stops responing for a few seconds and after then it looks, like it's
in normal operation again. the only problem is load, which is incrementing
constantly, but cpu is 99% idle...
after
2008 Jun 03
1
Model simplification using anova()
Hello all,
I've become confused by the output produced by a call to
anova(model1,model2). First a brief background. My model used to predict
final tree height is summarised here:
Df Sum Sq Mean Sq F value Pr(>F)
Treatment 2 748.35 374.17 21.3096 7.123e-06 ***
HeightInitial 1 0.31 0.31 0.0178 0.89519
2002 Dec 18
1
samba to samba via LDAP
Hi all,
I have lots of samba servers and want them to all authenticate against a
single password file which will be a LDAP database.
Where I want to be:
Login to a domain called "FROST" that passes the username:passwd to a domain
called "ACR" which checks LDAP.
Where I'm at:
I can login (from a W2K machine) to a test server called LIBIT which uses LDAP
2013 Mar 06
0
how to construct bivariate joint cumulative pdf from bivariate joint pdf
Hello,
I am using sm.density() to find the bivariate joint PDFof events:
For eg,
x<-cbind(rnorm(30),rnorm(30))
den<-sm.density(x)
Then I get the joint pdf from den$estimate in order to constructthe
joint cumulative PDF.
However, summing up all the values from den$estimateisnot equal to
1(have multipliedby the grid size).
Anyone could help?
Thanks.
mc
[[alternative HTML version
2012 Mar 23
1
Nonparametric bivariate distribution estimation and sampling
Dear all,
I have a bivariate dataset from a preliminary study. I want to do two things: (1) estimate the probability density of this bivariate distribution using some nonparametric method (kernel, spline etc); (2) sample a big dataset from this bivariate distribution for a simulation study.
Is there any good method or package I can use in R for my work? I don?t want parametric models like
2010 Jan 01
2
How to calculate density function of Bivariate binomial distribution
Am trying to do some study on bivariate binomial distribution. Anyone knows
if there is package in R that I can use to calculate the density function of
bivariate binomial distribution and to generate random samples of it.
Thanks,
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2011 Jun 14
2
How to generate bivariate exponential distribution?
Any one know is there any package or function to generate bivariate
exponential distribution? I gusee there should be three parameters, two rate
parameters and one correlation parameter. I just did not find any function
available on R. Any suggestion is appreciated.
--
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2010 Feb 10
3
Sampling from Bivariate Uniform Distribution
Hello all!!!
1) I am wondering is there a way to generate random numbers in R for Bivariate Uniform distribution?
2) Does R haveĀ built-in function for generating random numbers for any given bivariate distribution.
Any help would be greatly appreciated !!
Good day!
Haneef Anver
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2010 Apr 06
2
checking bivariate normality
x <- iris$Sepal.Length[1:50]/iris$Sepal.Width[1:50]
y <- iris$Petal.Length[1:50]/iris$Petal.Width[1:50]
I want to check whether (x,y) follows a bivariate normal distribution or
not, using density plot or scatter plot. Is it possible to plot a bivariate
density in R. I cant find any.
Arindam Fadikar
M.Stat
Indian Statistical Institute.
New Delhi, India
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2008 Jan 23
2
from a normal bivariate distribution to the marginal one
Hello,
I'm quite new with R and so I would like to know if there is a command
to calculate an integral.
In particular I simulated a bivariate normal distribution using these
simple lines:
rbivnorm <- function(n, # sample size
mux, # expected value of x
muy, # expected value of Y
sigmax, # standard deviation of
2003 Sep 17
1
Bivariate Ripley K function
Hello,
I have used the univariate Ripley K function in R, but does anyone know if
there is a bivariate function built in? I have two species that I am dealing
with.
Also, how might I add error bars into the graphs (univariate and/or
bivariate)?
Thank you,
Karin Leiderman
k_leiderman at hotmail.com
Graduate Student/Research Assistant
Department of Mathematics
Univesity of New Mexico
2004 Nov 16
2
help on EM Algorithm for bivariate normal
Hi,
I woul like to know if it is possible to have a "R code" to generate EM
Algorithm for a normal bivariate mixture.
Best regard,
S.F.