Displaying 20 results from an estimated 5000 matches similar to: "randomization test"
2003 Dec 24
0
AW: coding logic and syntax in R
Hi,
In <- as.numeric(strsplit("11111011111101111111111111111111", "")[[1]])
Sets <- rep(letters[1:4], each = 8) ## your sets
Sp.In <- split(In, Sets)
logical <- sapply(Sp.In, function(x) any(x == 0))
c(as.matrix(data.frame(Sp.In))* rep(!logical, each = 8)) ## for equal sets
This could give you a hint
Thomas
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Von: Pravin
2003 Dec 24
4
coding logic and syntax in R
Hello,
I am a beginner in R programming and recently heard about this mailing list.
Currently, I am trapped into a simple problem for which I just can't find a
solution. I have a huge dataset (~81,000 observations) that has been
analyzed and the final result is in the form of 0 and 1(one column).
I need to write a code to process this column in a little complicated way.
These 81,000
2004 Sep 18
0
Pharmacokinetics using R
Hi,
I just wonder if R is still used for PK analysis. However, I have to use R
for some purposes anyways. Here is a really strange problem I am running
into and I hope to get some assistance from the group. The following code
works fine in S-Plus (Population estimates and MAP estimates look reasonable
).
cs.fit<-nlme ( CONC~phenoModel(CID,TIME, DOSE, lCl, lV),
fixed = lCl+lV ~1,
2009 Dec 02
2
calculation problem when export and import data
Hello,
I have a question on export and import data. Thank you for any suggestions.
data 'simul' is generated as follows:
N <- 20
n <- N/2
nsets <- 10
simul <- matrix(0,nsets,N)
th <- c(0,1, 1)
for(i in 1:nsets){
simul[i,] <- rnorm(N,mean= rep(th[1:2],N/2),sd=th[3])
}
I exported data as follows:
write.table(simul,
2011 Jan 19
1
Pearson correlation with randomization
Hello,
I will be very obliged if someone can help me with this statistical R
problem:
I am trying to do a Pearson correlation on my datasets X, Y with
randomization test. My X and Y datasets are pairs.
1. I want to randomize (rearrange) only my X dataset per row ,while
keeping the my Y dataset as it is.
2. Then Calculate the correlation for this pair, and compare it to
your true
2002 Nov 18
0
(no subject)
Pravin,
You don't necessarily need a login script,
but it is nice for mounting shared drives
and printers, or just copying/installing
files.
Use an empty login script to start, then
use the Windows "command line" (the
"net use /?" command is helpful here) to
mount and attach to services you want.
Put those commands into the login
script and use environment
2004 Aug 06
0
Re: Please confirm your message
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<body>
<a class="moz-txt-link-abbreviated" href="mailto:speex-dev@xiph.org">speex-dev@xiph.org</a> wrote:
<blockquote type="cite"
cite="mid1050398492.11049.TMDA@motherfish-II.xiph.org">
<pre
2013 Jul 09
1
Sending carbon copy mails from R
Hi,
I am using sendmailR package to send mails from R. I am not able to make
carbon copy work properly. If I specify multiple recipients in to field,
then they all receive individual emails and not carbon copies
My sample code is
require(sendmailR)
header <- list(cc="b.mali@abc.com")
to <-
2010 Dec 07
1
Using nlminb for maximum likelihood estimation
I'm trying to estimate the parameters for GARCH(1,1) process.
Here's my code:
loglikelihood <-function(theta) {
h=((r[1]-theta[1])^2)
p=0
for (t in 2:length(r)) {
h=c(h,theta[2]+theta[3]*((r[t-1]-theta[1])^2)+theta[4]*h[t-1])
p=c(p,dnorm(r[t],theta[1],sqrt(h[t]),log=TRUE))
}
-sum(p)
}
Then I use nlminb to minimize the function loglikelihood:
nlminb(
2011 Nov 16
0
Maximum likelihood for censored geometric distribution
Hi all,
I need to check for a difference between treatment groups in the
parameter of the geometric distribution, but with a cut-off (i.e. right
censored). In my experiment I stimulated animals to see whether I got a
response, and stopped stimulating if the animal responded OR if I had
stimulated 10 times. Since the response could only be to a stimulation,
the distribution of response times
2003 Sep 25
3
configuring TE410P for four E1 PRI lines
hi,
I'm trying to configure my newly acquired TE410P card to work as 4
E1 spans. This is
supposed to be a drop-in replacement to the earlier E100P card. However,
on loading the
zaptel module it gets configured as T1 spans basically doing a 'cat' on
/proc/zaptel/1 thru 4,
it shows 24 channels per span. After this ztcfg fails saying
'ZT_CHANCONFIG failed for channel 97'.
2008 Mar 12
1
Help in estimating HURST parameter
Hi,
Can u please tell me which all packages do i need to install to
estimate the hurst parameter in R. I have tried installing all the possible
options but still it doesnt work.
basically i want to use 9 functions to estimate hurst parameter like
aggvarfit, rsfit, etc.
i will be very thankful if u could be of some help.
--
Regards,
Deepak Jadhav.
[[alternative HTML version
2011 May 12
1
Maximization of a loglikelihood function with double sums
Dear R experts,
Attached you can find the expression of a loglikelihood function which I
would like to maximize in R.
So far, I have done maximization with the combined use of the
mathematical programming language AMPL (www.ampl.com) and the solver
SNOPT (http://www.sbsi-sol-optimize.com/manuals/SNOPT%20Manual.pdf).
With these tools, maximization is carried out in a few seconds. I wonder
if that
2011 Jun 22
2
best references (tutorials & howtos) for an experienced Rails Developer to start building Facebook Apps with RoR?
Hi everyone,
what are your best references (tutorials & howtos) for an experienced Rails
Developer to start building Facebook Apps with RoR?
THANKS
+++++++++++
Pravin Mishra
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2011 Mar 14
0
nlysystemfit and loglikelihood values
Dear R-help,
The documentation for systemfit shows that logLik() can be used to
obtain loglikelihood values from linear systems estimated by
systemfit().
It seems to me that logLik() cannot be used for nlsystemfit(). Does
anyone know of any other packages that might let me obtain the
loglikelihood of a model estimated with nlsystemfit()?
Kind regards,
Alex Olssen
2011 Jun 23
2
getting twitter followers into our rails application
Hi everybody,
I have integrated OAuth into my app. Now I want to get the follower
lists for the user who has authenticated using OAuth.
My app works on ruby on rails. And i want to know how i can fetch the
followers list for the current logged in user.
Can someone tell me if they have done it before?
thaks
+++++++++++++++
Pravin Mishra
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2006 Jun 29
1
Seeking RoR help for an upcoming project
Hello,
We''re working on building a fairly lightweight, community-oriented site
which would be a great opportunity for a
beginning-to-moderately-experienced RoR developer looking to cut their
teeth on a real site.
The site could prove to be highly visible if succesful and would be an
excellent addition to your portfolio. Please drop me a line and I can go
into detail on the
2011 Oct 29
1
Refresh tab content on click in JQuery UI Tabs
HI Guy''s
TAB1 and TAB2 have some radio button, checkbox and dropdown menu. When
TAB1 is selected, I have to switch to TAB2 and then back to TAB1 to refresh
the loaded content.
How to make TAB1 refresh loaded content when click on its tab?
*code is something like that*
<ul class="tabs">
<li><a *href="#tab1"*>Gallery</a></li>
2006 Jan 25
0
Log-Likelihood 3d-plot and contourplot / optim() starting values
Hello,
i have coded the following loglikelihood-function
# Log-Likelihood-Funktion
loglik_jm<-function(N,phi,t) {
n<-length(t)
i<-seq(along=t)
s1<-sum(log(N-(i-1)))
s2<-phi*sum((N-(i-1))*t[i])
n*log(phi)+s1-s2
}
# the data
t<-c(7,11,8,10,15,22,20,25,28,35)
# now i want to do a 3d-plot and a contourplot in order to see at which
values of N and phi the loglikelihood
2011 Jun 08
2
Results of CFA with Lavaan
I've just found the lavaan package, and I really appreciate it, as it
seems to succeed with models that were failing in sem::sem. I need
some clarification, however, in the output, and I was hoping the list
could help me.
I'll go with the standard example from the help documentation, as my
problem is much larger but no more complicated than that.
My question is, why is there one latent