similar to: A Simple Question

Displaying 20 results from an estimated 5000 matches similar to: "A Simple Question"

2010 Jan 19
1
Help on using WinBUGS on Mac
Dear all, I had trouble in setting up WinBUGS on my Mac, and I'm seeking for some help here. I followed the instruction by Tom Palmer here: http://www.ruudwetzels.com/MacBUGS/winbugsonmacosx.pdf I installed Darwine 1.1.21, and downloaded WinBUGS14. However, when I double-clicked the WinBUGS14.exe file, a black-box dialog window poped up, and I got error message in the Wine log as
2008 Jan 31
1
R2WinBUGS is broken
Dear R-users, I am trying to use the following code to reproduce results from Prof. Gelman's book, but have the listed error for R2WinBUGS version (the openbugs version is good). I am using R-2.6.1 on windows XP, and all the R packages are most current ones. schools.bug can be found at http://www.stat.columbia.edu/~gelman/bugsR/runningbugs.html . Can anyone help me to figure out what's
2005 May 16
1
A question about bugs.R: functions for running WinBUGs from R
Dear R users, I've found bugs.R : the functions for running WinBUGs from R that is writen by Dr. Andrew Gelman who is a professor from Columbia University. The bugs.R would be very useful for me, and I think many of you know it as well. I followed the instuctions on Dr. Gelman's web to install all of documents that bugs.R needs, but when I try to run the school example the web posted in
2011 Jan 13
1
Openbugs and rbugs on mac with wine
Hello list, I?ve been trying to get OpenBUGS running on my mac using the wine emulator. I can run Openbugs just fine by doing: wine ~/OpenBUGS312/OpenBUGS.exe In the terminal, so OpenBUGS works. When I try to run the schools example using rbugs(), the OpenBUGS process starts in wine, but it just sits there, no log, no script, no output of any sort. The rbugs () call makes the init,
2009 Aug 19
1
BUGS
I am running a BUGS function with following   schools.sim <-bugs(data,inits,                              parameters,                              model.file="schools.txt",                              n.chains=3,                              n.iter=1000,                              bugs.directory="E:/Rprograms")   My model.file IS in the directory
2006 Apr 29
3
Making R talk to Win/OpenBUGS in Linux (again)
I'm back! I've just learned that, on a fully updated Fedora Core Linux5 sytem, the working solution to access Winbugs under wine via the R package "rbugs" no longer works. Here was my last post on this topic (with the formerly working solution) from January. http://finzi.psych.upenn.edu/R/Rhelp02a/archive/68497.html Currently, what happens is that WinBUGS starts up, but just
2006 Apr 06
0
R2WinBUGS erro
Dear R-help, I'm using the R2WinBUGS package and getting an error message: Error in file(file, "r") : unable to open connection In addition: Warning message: cannot open file 'codaIndex.txt', reason 'No such file or directory' I'm using R 2.2.1 and WinBUGS 1.4.1 on a windows machine (XP). My R code and WinBUGS code is
2006 Apr 05
2
R2WinBUGS error
Dear R-help, I'm using the R2WinBUGS package and getting an error message: Error in file(file, "r") : unable to open connection In addition: Warning message: cannot open file 'codaIndex.txt', reason 'No such file or directory' I'm using R 2.2.1 and WinBUGS 1.4.1 on a windows machine (XP). My R code and WinBUGS code is given below.
2011 Oct 24
0
Output from BRugs Doesn't Match That from OpenBUGS
Hi. I am trying to analyze with BRugs the Box-Tiao variance components example in WinBUGS. The output from BRugs, mean sd MC_error val2.5pc median val97.5pc start sample sigma2.btw 681.9 1161 10.89 0.7016 253.8 4232 25001 100000 sigma2.with 4266.0 1246 4.92 2480.0000 4057.0 7262 25001 100000 doesn't match the output from WinBUGS, node mean
2010 Apr 08
1
a small question about R with Winbugs
I try to do a test for dirichlet process for Multivariate normal, but Winbugs always says "expected multivariate node", does that mean I miss something at initialization? I will really appreciate the help to solve this problem Here is the R code, and Winbugs code. model { for(i in 1:N){ y[i,1:2] ~ dmnorm(mu[i,],tau[i,,]) S[i] ~ dcat(pi[]) mu[i,1:2] <- mu.star[S[i],]
2009 Jul 16
1
Error with r2winbugs
Hi, I am trying to do run the following model saved in "C:/bugs/sus.bug" model { for (i in 1:n){ y[i] ~ dpois(lamdba[i]) log(lambda[i]) <- mu+bmale[male[i]]+bschn[schn[i]]+epsilon[i] # epsilon[i] ~ dnorm(0,tau.epsilon) } mu ~ dnorm(0,.0001) bmale ~ dnorm(0,.0001) tau.epsilon <- pow(sigma.epsilon, -2) sigma.epsilon ~ dunif(0,100) for (j in
2005 May 25
1
The error while using R2WinBUGS
Dear all, I tried to run WinBUGS model in R by using package R2WinBUGS, but I failed because of the massage : cannot calculate DIC for model in log file of WinBUGS14. In fact, the model works in WinBUGS and I can get summaries of the model, such as density, stats..., except DIC , because DIC may not be appropriate in this kind of model due to some reasons(according to the manual of WinBUGS14),
2005 Jul 27
1
error message running R2WinBUGS
*Dear R-user, * I try to run Winbugs from R using bugs function in R2WinBUGS.My model works well in Winbugs except that I can't get DIC. Since I don't need DIC, when I try to run Winbugs from R , I set "DIC=FALSE". My model is as following: model { for (i in 1:N) { for(j in 1 : T ) { x[i, j] ~ dbin(p[i, j],n[i]) #Hier.prior p[i, j] ~ dbeta(alpha[i, j], beta[i, j]) alpha[i, j]
2008 Jan 04
2
R2WinBUGS sending variables as factors
Hello R and BUGS users, I am writing a heirarchical model in R to send to BUGS via R2WinBUGS and I am finding it difficult to get the model to run. I seem to be having two problems. 1) I can't seem to send variables classed as factors (Month), is there a way do this? 2) Checking the Log in WinBUGS I can see that the model is Syntactically correct, but Bugs is not able to recognise the the
2008 Jul 23
1
R2WinBUGS problem
Dear friends - I'm on winXP, R 2.71 - I have with some help dveloped this multivariate normal model, which gives very plausible results in WinBUGS even without any initial values specified. However, when I then try to run the same model via the bugs function in R2WinBUGS with inits specified as inits=NULL the program stops in a dead end. So I have tried to make inits for the bugs function
2008 Feb 29
1
bugs.seed= and summary.only= option in R2WinBUGS
Dear R user: I am using R2WinBUGs to call WinBUGS from R. But I have some problems in using either the option bugs.seed and summary.only in the function bugs. Here are the programs and error messages. It appears that if I don't use either option, the program runs fine. I am using R2.5.1 and WinBUGs14. The program is not running: > schools.sim <- bugs(data, inits,
2005 Jan 06
1
rbugs in linux
Hi, I am trying to run the "schools" example in the rbugs library (running winbugs in linux via wine-20041201) but keep getting the following error. Note I have tested wine and winbugs to confirm that both are operational. Error in runBugs(bugs, script.file, n.chains, workingDir, useWine, wine, : BUGS stopped before getting to coda. The command I'm using is:
2005 Dec 01
1
Simulate Correlated data from complex sample
Dear List: I have created some code to simulate data from a complex sample where 5000 students are nested in 50 schools. My code returns a dataframe with a variable representing student achievement at a single time point. My actual code for creating this is below. What I would like to do is generate a second column of data that is correlated with the first at .8 and has the same means within
2010 Nov 03
3
optim works on command-line but not inside a function
Dear all, I am trying to optimize a logistic function using optim, inside the following functions: #Estimating a and b from thetas and outcomes by ML IRT.estimate.abFromThetaX <- function(t, X, inits, lw=c(-Inf,-Inf), up=rep(Inf,2)){ optRes <- optim(inits, method="L-BFGS-B", fn=IRT.llZetaLambdaCorrNan, gr=IRT.gradZL, lower=lw, upper=up, t=t, X=X)
2010 Jan 12
1
Strange behavior when trying to piggyback off of "fitdistr"
Hello. I am not certain even how to search the archives for this particular question, so if there is an obvious answer, please smack me with a large halibut and send me to the URLs. I have been experimenting with fitting curves by using both maximum likelihood and maximum spacing estimation techniques. Originally, I have been writing distribution-specific functions in 'R' which work