Re: [R] Stack dataframes into a matrix

te3[,2])) print(x) # Need to be able to stack the x's to produce one matrix } Thanks Anamika On Wed, Jul 27, 2016 at 2:46 AM, David Winsemius <dwinsem...@comcast.net> wrote: > > > On Jul 26, 2016, at 8:07 PM, Anamika Chaudhuri <canam...@gmail.com> > wrote: > > > >

[R] Stack dataframes into a matrix

I have 100 datasets with 20 rows and 2 columns in each dataset. I am looking for help to produce x and y below as 1000 X 20 matrix and then repeat that across 100 datasets using R library(MASS) library(car) set.seed(1234) library(mixtools) library(sp)

[R] How to use dwish in MCMCpack in R

Hi All: I am trying to use the dwish function in the MCMCpack in R dwish(W, v, S) where Arguments W-Positive definite matrix W v-Degrees of freedom (scalar). S-Inverse scale matrix How do I determine W, the positive definite matrix. The matrix provided in the documentation doesnot help.

Re: [R] How to use dwish in MCMCpack in R

I put in the matrix at which I want the density as S. I was wondering what is W then? Thanks Anamika On Thu, Sep 3, 2015 at 12:28 PM, Duncan Murdoch <murdoch.dun...@gmail.com> wrote: > On 03/09/2015 9:29 AM, Anamika Chaudhuri wrote: > > Hi All: > > > > I am tryin

[R] Need help with kde2d function in R

Hi, I am trying to create a bivariate ellipse to see if the true values fall within the 95% confidence ellipse. I am getting subscript out of bounds error in R with following code. Not sure what is causing it. When I use the kde2d function with n=30 I get the error but not for n=25 and below.

[R] Equation of an Ellipse in R

Hi All: I was looking for some help to code the equation of an ellipse in R, given I have a Bivariate Normal distribution (X,Y) with mean (m1,m2) and var-covariance matrix (var1,cov12,cov12,var2). Thanks Anamika [[alternative HTML version deleted]]

Re: [R] Data Manipulation in R

21, 2013 12:24 AM, Anamika Chaudhuri canam...@gmail.com wrote: Hi: I am looking for some help to manipulate data in R. I have two csv files. datasetY1 V1 V2 V3 V4 1 4 0 20 17 2 4 0 15 17 3 2 0 13 21 datasetY2 V1 V2 V3 V4 1 20 52 15 18 2 18 54 14 21 3 18 51 13 21 I want to be able

[R] Data Manipulation in R

Hi: I am looking for some help to manipulate data in R. I have two csv files. datasetY1 V1 V2 V3 V4 1 4 0 20 17 2 4 0 15 17 3 2 0 13 21 datasetY2 V1 V2 V3 V4 1 20 52 15 18 2 18 54 14 21 3 18 51 13 21 I want to be able to create separate csv files by taking the corresponding rows of

[R] Help with automation of WinBUGS from R

Hi: I have a question related to the R Code which calls BUGS. I have run the model in WinBUGS and it runs fine giving me the expected results. Below is the automation code used when I had single outcome or univariate data for Y’s. Now I want to use it for multiple outcomes. So the trial.data

[R] DataEllipse versus Ellipse Function in R

Hi: Does Ellipse and dataellipse function in R produce the same ellipse? I wanted to see how the radius for the Ellipse function in R calculated. Also what is the var-covariance matrix, if any, assumed for the dataellipse function? Heres an example of the code where I am generating Multivariate

Re: [R] R.oo in R-3.0.1

Hi All: I am getting some warnings trying to run the following code and I am not sure what they mean. set.seed(111) k-63 n-60 x-NULL p-rbeta(k,3,3)# so that the mean nausea rate is alpha/(alpha+beta) #min-10 #max-60 #n-as.integer(runif(k,min,max)) for(i in 1:k) +

[R] Error from running R2WinBUGS in R

Hi All: I am getting an error (highlighted) from running R2WinBUGS in R. To be able to replicate the situation heres the code: .#Set working directory setwd(H://AChaudhuri/Testing/CSVS) matrix=NULL csvs - paste(MVN, 1:2, .csv, sep=) for(i in 1:length(csvs)){ matrix[[i]] - read.csv(file=csvs[i],

[R] How to find the probability of falling in a bivariate ellipse

Hi All: How would you find out the probability that a point lies within an ellipse? For eg if I was plotting (x,y) for 300 datasets in an 95% ellipsoid region, how do I calculate how many times out of 300 will my points fall inside the ellipse? Heres the code I am using library(MASS) seed-1234

[R] Bivariate Tolerance Region

Hi: I apologize for posting in the R listserv. But I am trying to do the following in R. I am trying to construct Bivariate 95% Approximate Confidence interval for the mean vector p=(p1,p2) similar to what we have in the univariate case. [image: \hat p \pm z_{1 - \frac{1}{2}\alpha}

[R] Automating the running of MVLN model in R using R2WinBUGS

Hi: To test the situation below I am creating 2 datasets .#Set working directory setwd(C://Tina/USB_Backup_042213/Testing/CSV) matrix=NULL csvs - paste(MVN, 1:2, .csv, sep=) for(i in 1:length(csvs)){ matrix[[i]] - read.csv(file=csvs[i], header=T) print(matrix[[i]]) } So now I have read in 2

[R] Add constraints to rbinom

Hi: I am trying to generate Beta-Binomial random variables and then calculate Binomial exact confidence intervals to the rate..I was wondering if I needed to add a constraint such that x=n to it, how do I go about it. The reason is I am getting data where xn which is giving a rate1. Heres my

[R] Running MCMC using R2WinBUGS

Hi All: Not sure why my previous question never got posted. Here I am seeking some help on my code. I am using the following code to run MCMC simulation on the following data using the model below: # Data matrix-NULL csvs-paste(MVN, 1:2,.csv,sep=) for (i in 1:length(csvs)){ + matrix[[i]]-

[R] Automation using R2WinBUGS

Hi All: I am running R2WinBUGS so that I could automate the running of my Multivariate Logit Normal model on 300 simulated datasets. The problem I have is I am not able to read in the data correctly and then code it in the automation part. *Heres my model:* model { for (j in 1 : Nf) { p1[j,

Re: [R] Multinomial-Dirichlet using R

Winsemius dwinsem...@comcast.netwrote: On May 12, 2013, at 4:44 PM, Anamika Chaudhuri wrote: Hi: I have asked this question on Cross-Validated. So it might be a cross posting but havent received any responses to it. I am trying to see which distribution will best fit the data I am

[R] Multinomial-Dirichlet using R

Hi: I have asked this question on Cross-Validated. So it might be a cross posting but havent received any responses to it. I am trying to see which distribution will best fit the data I am working on. The dataset is as following: Site Nausea headacheAbdominal

[R] Beta-Binomial Regression in R

Hi All: I am trying to generate Beta-Binomial data with regressors using R. I have used the following code to generate Beta-Binomial data. Now I want to add a covariate to the equation. I would then like to use the simulated data to run the Beta-Binomial model with covariates on it. Appreciate

[R] qbeta function in R

HI All: Does anyone know the code behind the qbeta function in R? I am using it to calculate exact confidence intervals and I am getting 'NaN' at places I shouldnt be. Heres the simple code I am using: k-3 x-NULL p-rbeta(k,3,3)# so that the mean nausea rate is alpha/(alpha+beta) min-10

Re: [R] qbeta function in R

, Anamika Chaudhuri wrote: HI All: Does anyone know the code behind the qbeta function in R? Well, yes, but don't you think it would be wise to question whether your code might be the problem rather than the R code? I am using it to calculate exact confidence intervals and I am getting 'NaN

[R] , Exact Confidence Interval

Hi All: I am using R to calculate exact 95% confidence interval using Clopper Pearson method. I am using the following code but it seems to get into a loop and not get out of it, it goes on forever although I am looping it only 10 times across 63 sites with 10 observations per site. I was

[R] Specify decimal places for parameters in BUGS output

Hi All: I had a basic question to ask. I am running R2WinBUGS so that I could automate the running of my model using 1000 simulated datasets. Below is the code I am using. The only problem I am having is the bugs output that comes out shows my parameters as nos with 1 decimal place after. I would

Re: [R] [BUGS] [R-BUGS] error while plotting

Trevor, Thanks for your reply. That doesnot help Any other suggestions? Anamika On Tue, Aug 10, 2010 at 11:58 AM, Trevor Davies tdav...@mathstat.dal.cawrote: I think you need to load is R2WinBUGS again. require(R2WinBUGS) Trevor Hi All: I am getting an error while trying to plot in

[R] WinBUGS Question

Hi: Is there a way we can set up WINBUGS to run 100 simulated datasets on the same model and output results? Or do we have to call in each dataset at a time and repeat the process 100 times manually? Thanks Anamika [[alternative HTML version deleted]]

[R] Beta Conjugate Prior for Random intercept model -WInBUGS

I have been using the following random intercept model with non-informative prior: model { for (i in 1:n.samples) { vomit[i] ~ dbern(p[i]) logit(p[i]) - beta0 + alpha[siteid[i]] } for (j in 1:n.sites) { alpha[j]~dnorm(0,tau) } beta0 ~ dnorm(0.0,1.0E-6) tau ~ dgamma(0.01,0.01) }

Re: [R] expected variable name error pos 98349 WInBUGS in R

the BUGS interpreter. Hence wrong mailing list. Best wishes, Uwe Ligges Anamika Chaudhuri wrote: I am using a random intercept model with SITEID as random and NAUSEA as outcome. I tried using a dataset without missing values and changed my model statement accordingly but still get

[R] expected variable name error pos 98349 WInBUGS in R

I am using a random intercept model with SITEID as random and NAUSEA as outcome. I tried using a dataset without missing values and changed my model statement accordingly but still get the same error. Follwoing in an excerpt. anal.data - read.table(nausea.txt, header=T, sep=\t)

[R] Reading txt file in R

Hi:   I am using the following code to read a data set in txt in R and using the follwoing model. But it seems to give me an error ' expected variable name error pos 134022'. Any help is greatly appreciated.   Code: anal.data - read.table(nausea.txt, header=T, sep=\t)

Re: [R] Reading txt file in R

them? On Sat, Dec 6, 2008 at 10:42 PM, Anamika Chaudhuri [EMAIL PROTECTED] wrote: Hi: I am using the following code to read a data set in txt in R and using the follwoing model. But it seems to give me an error ' expected variable name error pos 134022'. Any help is greatly appreciated

Re: [R] Reading txt file in R

, 2008, 10:27 AM In your sample data, the first 9 lines do not have the same number of elements as the rest. What are they supposed to represent? How do you intend to read them in and use them? On Sat, Dec 6, 2008 at 10:42 PM, Anamika Chaudhuri [EMAIL PROTECTED] wrote: Hi: I am using

[R] Reading txt file in R to run Random Intercept Model

I am using a random intercept model with SITEID as random and NAUSEA as outcome. Thanks. Anamika I tried using a dataset without missing values and changed my model statement accordingly but still get the same error. Follwoing in an excerpt. anal.data - read.table(nausea.txt, header=T, sep=\t)