similar to: drawing a network digraph

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 useRs, Am trying to use xtable on the following data.frame and I don't get what I expect: example.table <- data.frame(rbind( c("Gender"," "," "," "), cbind(rep(" ",2),c("Male","Female"),c(3.0,4.0),c(3/7,4/7)) )) colnames(example.table) <- c(" "," ","number of

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 <-

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 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 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 would like to draw a graph with vertices and edges, and I guess tcl/tk would be appropriate. I don't know tcl/tk but have googled for a 10-page (or so) introduction to 'getting started with tcl/tk in R' but without any luck. - Does anyone know of the existence of such a document or any other web-based material on the subject? - Does anyone have an (informative) piece of

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

Hi Guys, Do you any one know how to convert a long format table to an adjacency matrix used in sna? The long table looks like p1 p2 counts a b 100 a c 200 a d 100 b c 80 b d 90 b e 100 c d 100 c e 40 d e 60 and I want to convert it to an adjacency matrix which can be used in sna? Any methods will be appreciated! btw, besides sna package, is there any better package can be used in social

Hey, all. I'm looking for packages that are good at two things 1) Drawing directed graphs (i.e nodes and edges), both with single and double headed arrows, as well as allowing for differences in line width and solid versus dashed. Note: I've tried Rgraphviz here, but have run into some problems (which seem fixable and I may go with it in the end), and it doesn't satisfy need

Can you please show code example, how to draw graph with some nodes and edges, but with weights. I only found here http://www.bioconductor.org/packages/release/bioc/vignettes/Rgraphviz/inst/doc/Rgraphviz.pdf- Using edge weights for labels, but... Here an example: > library("graph"); library(Rgraphviz) > myNodes = c("s", "p", "q", "r") >

Hi All, I tried to install the package of Rgraphviz in the following two ways successfully: source("http://bioconductor.org/biocLite.R") biocLite("Rgraphviz") install.packages(pkgs="C:/Progra~1/R/lib_download/Rgraphviz_1.24.0.zip", lib="C:/Progra~1/R/R-2.10.1/library", repos=NULL) but when I loaded the package though library(Rgraphviz) or

Hi, I have problem loading Rgraphviz. Following the instructions specified by the README in Rgraphviz_1.20.3.tar.gz didn't help either. o. set the following Windows environment variables accordingly (control panel -> systems -> Advanced -> Environment Variables ): (a) create new user variables: GRAPHVIZ_INSTALL_DIR (e.g., C:\Graphviz-2.21)

Dear experts I installed Rgraphviz with the following command: source("http://www.bioconductor.org/biocLite.R") biocLite("Rgraphviz") But had a problem when I tried to load it. This says that libcdt-4.dll is missing in your computer and the following message in R window: > library("Rgraphviz") Loading required package: graph Loading required package:

Dear list, I have a lot of troubles installing Rgraphviz. I installed graphviz 2.13 from "graphviz-2.13.20061222.0540.tar" I installed the library Rgraphviz > getBioC("Rgraphviz") Running biocinstall version 2.0.8 with R version 2.5.0 Your version of R requires version 2.0 of Bioconductor. trying URL '

Rgraphviz Install works fine (http://www.bioconductor.org/packages/release/bioc/html/Rgraphviz.html) Latest version of graphviz is installed as well however I get following error when loading Rgraphviz (on Mac 10.6.2) Error in dyn.load(file, DLLpath = DLLpath, ...) : unable to load shared library '/Users/jb/Library/R/2.9/library/Rgraphviz/libs/i386/Rgraphviz.so':

Hi, I am installing Rgraphviz at Linux Fedora Core 2 with 32 bit AMD athlon with 512 RAM. I have installed graphviz version: graphviz-1.16-1.src.rpm installed already on system. I am doing: $ R CMD INSTALL -l /usr/local/lib/R/library Rgraphviz_1.4.0.tar.gz --------------------------------- * Installing *source* package 'Rgraphviz' ... ** libs gcc -I/usr/local/lib/R/include

Hi all, I am trying to compile Rgraphiz on Windows 7 64bit with R-2.13.0. I have installed Rtools213.exe from [1]. The 64bit packages in [2] provided me with the 64 bit version of graphviz. After intalling the binary version Rgraphviz 1.30 (in 32bit) it complains (as expected) that: > library(Rgraphviz) Error: package 'Rgraphviz' is not installed for 'arch=x64' I

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