similar to: "xtable" results doesn't correspond to data.frame

Dear R users, I would like to sample from a mixture distribution p1*f(x1)+p2*f(x2). I usually sample variates from both distributions and weight them with their respective probabilities, but someone told me that was wrong. What is the correct way? Vumani

Dear R users; I am trying to write a small program which reads in a data set, and selects observations from certain years before the analysis. I have a problem including the selection criteria in the header of the program. Here is the problem; dataFIT<-function(MODEL, MARGINS, yearConsidered){ library(foreign CovPaper<-read.spss("C:/Data/data.sav") NewData <-

Dear R users, I have a matrix with 2 columns with the variables: "daughter index", "mother index". I would like to draw a network digraph using this data, where each daughter is connected to a mother and between the connections inlcude a circle with the information on the indices ("daughter index", "mother index"): i.e. something similar to graphs

it is easy to fit a distribution using fitdistr poisdata <- rpois(n = 100, lambda = 2) poismle <- fitdistr(poisdata, "Poisson") poismle but i would like to know whether its possible to get an identical result using glm. I use poistab <- data.frame(table(poisdata)) colnames(poistab) <- c("width","freq"); poistab[,"width"] <-

Dear R users: I am not entirely convinced that clogit gives me the correct result when I use pspline() and maybe you could help correct me here. When I add a constant to my covariate I expect only the intercept to change, but not the coefficients. This is true (in clogit) when I assume a linear in the logit model, but the same does not happen when I use pspline(). If I did something similar

Dear all; I am trying to use HMISC imputation function to perform multiple imputations on my data and I keep on getting errors for the code given in the help files. When using "aregImpute" the error is; >f <- aregImpute(~y + x1 + x2 + x3, n.impute=100) Loading required package: acepack Iteration:1 Error in .Fortran("wclosepw", as.double(w), as.double(x),

Dear R users; I would like to convert a series of vectors to matrices in the following way; (2,1,1) to a matrix 1 0 0 1 0 0 0 1 0 0 0 1 The idea is that the column sum of the matrix should be equal to the elements of the vector. Thanks. Vumani

Dear R-users: I asked a question on how I can have a universal legend in a plot and received the following result. I tried using "layout" but I can't seem to work on the "empty" plot (where I have to have the legend). I tried "oma" but I couldn't improve the quality of the plot, and that I didn't know how to specify all the line types using the

Dear R users: I have the following matrix. 0 1 1 0 1 0 2 1 0 3 0 0 I would like to spread the matrix such that whenever the row sum is greater than 1 the row is repeated the number of times given by the row sum. Furthermore I would like to split the following cases: 0 1 1 such that it map to the following matrix 0 1 0 0 0 1 such that each row adds up to 1. I have no problems with cases

Dear R-Help, I'm hoping to find a Multinomial Nested Logit package in R. It would be great to find something analogous to "PROC MDC" in SAS: > The MDC (Multinomial Discrete Choice) procedure analyzes models > where the > choice set consists of multiple alternatives. This procedure > supports conditional logit, > mixed logit, heteroscedastic extreme value,

Dear R users, Is it possible to force a hard return in an expression. I tried including one for a legend using an expression and it didn't work. Here is my code, legend(12, 0.10, c("Fitted density", as.expression(substitute(paste("Weibull (", alpha==shapeU," , ", beta==scaleU,") Mean = ",meanU," days"), list(shapeU =

Dear R users: Is there any R analogue for the S+ function "na.gam.replace". I would like to make an interaction of a categorical and smooth continuous covariate. Thanks. Vumani Dlamini Central Statistical Office Swaziland

Dear Listers, I am trying to use "rbinom" in my C code, but i always get zeros as output no matter the probability. Am not sure what I am doing wrong because the function has worked before. Attached in an example. Noticed that "rbinom" expects 'n' to be REAL. Regards, Vumani R 2.3.1 (2006-06-01) Windows XP Gcc /* Called this file binom.c and then ran rcmd shlib on it

Dear listers, Am currently using MCMC approaches to estimate some parameters of my model. One parameter has to be updated using a tuned gamma distribution. So at each iteration I estimate the mean and variance of the density of the gamma approximation using "vmmin" (i also supply the gradient argument). For moderate replications the procedure works, but if I increase them R crashes.

Dear R users, I am trying to convert a dataset from one format to several rectangular datasets. A consultant helped design the data entry program for our survey using Delphi/Pascal and for each household the information is stored in a file called "EA-HM-HH.TXT" where EA is the enumeration area number, HM is the homestead number and HH is the household number. Within this file the

I have found that I like having my captions and labels in my latex document rather than having them contained in my xtable output file (I haven't fully gone to sweave yet). I know I can do something like this by using the 'only.contents' argument in xtable. Unfortunately, the only.contents argument also removes the \begin{tabular}{rrrrrr} & \end{tabular} (in the example below) of

I could have sworn that yesterday xtable(file, booktabs = TRUE) was giving me toprule , midrule and bottomrule outout. Today : library(xtable) aa <- table( sample(letters[1:9], 100, replace = TRUE)) xtable(aa, booktabs = TRUE) gives me \begin{table}[ht] \centering \begin{tabular}{rr} \hline & V1 \\ \hline a & 15 \\ b & 11 \\ c & 13 \\ d &

DEar list members, I am currently using Sweave with LaTeX which is great. I can use xtable for formatting outp of tables but I have a problem setting the number of decimals in xtables when used with dataframe. I have found an example on the net ith matrix and it works. For example this works : > > tmp <- matrix(rnorm(9), 3, 3) > > xtmp <- xtable(tmp) > > digits(xtmp)

Dear R help: I am trying to use paste(), within an ifelse() statement to insert latex commands into an object that has been created using xtable(). I cannot make the strings behave as I would like, the '\t' is creating a tab, the usual method of '\\t' is not working either - nor is any series of backslashes. The xtable object, I think, automatically alters the strings. How

Hello everybody, i used xtable to get some latex output, which worked pretty well with my latex document. But somewhere i missed the part where they explain how to get these nice significance indicating *** into my latex table. it just stops right after Pr(> |t|) thanks in advance matthias