similar to: Question on exercise

I just install Dovecot and postfix. When I'm pull dovecot I see in the log that its checking for mail. if a put a test message locally on the server I can pull the message down to my cell phone and other computers. But when I try to a message from gmail or aol it doesn't come in to the server. it always bounces back to the place were I sent it from

Hi just a quick question in which I must use the "function and return" part of R. If I was asked to define a function called "median" where the function has a single argument x and returns the median value of a vector. How would I go about saying the median = element x in terms of n (say (n + 1)/2 or whatever it would be) if there is an even amount of elements, or x in terms

Dear Sir/Madam, I apologize for any cross-posting. I got a simple question, which I thought the R list may help me to find an answer. Suppose we have Y_1, Y_2, ., Y_n ~ Poisson (Lambda_i) and Lambda_i ~Gamma(alpha_i, beta_i). Empirical Bayes Estimator for hyper-parameters of the gamma distr, i.e. (alpha_t, beta_t) are needed. y=c(12,5,17,14) n=4 What about a Hierarchal B ayes

Dear Sir/Madam, I am a beginner in R. Here is my questions. 1. Can you give me one test for randomness (a name and descriptive paragraph is sufficient). 2. I have learned a uniform random number generator [e.g. not the algorithms: i)Wichmann-Hill, ii) Marsaglia-Multicarry, iii) Super-Duper (Marsaglia), iv) Mersenne-Twister, v) TAOCP-1997 (Knuth), or vi) TAOCP-2002 (Knuth)] . Is there any other

Hi, I am trying to plot the Case-Shiller index found at: http://www2.standardandpoors.com/spf/pdf/index/CSHomePrice_History_022445.xls The way I'm importing it into R is as follows: library(gdata) W <- read.xls("http://www2.standardandpoors.com/spf/pdf/index/CSHomePrice_History_022445.xls ", header=TRUE) attach(W) To give you and idea of what the data looks like: >

Hi all, I want to combine two data sets (ZA and ZB to get ZAB). The common variable between the two data sets is ID. Data ZA ID F M 1 0 0 2 0 0 3 1 2 4 1 0 5 3 2 6 5 4 Data ZB ID v1 v2 v3 3 2.5 3.4 302 4 8.6 2.9 317 5 9.7 4.0 325 6 7.5 1.9 296 Output (ZAB) ID F M v1 v2 v3 1 0 0 -9 -9 -9 2 0 0 -9 -9 -9 3 1 2 2.5 3.4 302 4 1 0 8.6 2.9 317 5 3 2 9.7

This is probably embarrassingly basic, but I have spent quite a few hours in Google and RSeek without getting a clue - probably I'm asking the wrong questions... There is this guy who has decided to walk through Australia, a total distance of 4000 km. His daily portion (mean) is 40km with an sd of 10 km. I want to calculate the number of days it takes to arrive with 80, 90, 95, 99%

Dear Sir/Madam Could you pls help me at these subjects in R-project? How could I construct a table for 5 or 10 records of data set? How could I construct a bar chart for categorical variable with overlay? How could I construct a histogram for a categorical variable? pls inform me. Thanks in advanced. Navid _________________________________________________________________ Hotmail:

Dear List, I am unsure if this is specifically a R question or a stats question? I thought i would ask here and if i get no replies it will answer that! I am trying to calculate Gini coefficients in R, based on a slight modification of the typical equation that i have seen in a paper. -------------- next part -------------- A non-text attachment was scrubbed... Name: PastedGraphic-2.pdf Type:

*Dear Bert, * Thank you very much for your feedback and the useful link https://rseek.org/ and https://www.r-bloggers.com/calculating-auc-the-area-under-a-roc-curve/. Actually, I want to know different performance between Stata and R, in multilevel logistic regression. For this purposes, I replicate ".do" file use Stata in

Dear Sir/Madam, I am using R version 1.8.1. I am doing following tast: First generate 100 Gaussion(3,1) numbers, then write the likelihood function to estimate the parameters of Gaussian distribution by direct maximizing the likelihood function. My likelihood function is: >fn<-function(x) >(-50*log((sd(x))^2))-50*log(sqrt(2*pi))-(1/2*((mean(x))^2))*(sum((x-(mean(x))^2)) After I

Hey there, I was wondering if someone could tell me if there's a package or command that allows me to compute a GINI coefficient using a vector of weights. Also the coefficient should be bias corrected. Diego Rojas [[alternative HTML version deleted]]

dear Researchers, i am looking for a function to plot a barplot for each mean value and the related standard deviation, and i can close my week. This is an example of my data set. really Thanks in advance for any help or suggestions Gianni My.mean <- data.frame(Mean=c(0.4108926,0.3949009,0.4520346, 0.4091665,0.4664066,0.3048296,0.4297226,0.4056383,

Hi does anyone know how to do a logistic regression in R? any help appreciated Carl -- View this message in context: http://r.789695.n4.nabble.com/Logistic-regression-tp4512658p4512658.html Sent from the R help mailing list archive at Nabble.com.

Hey Guys, i have the sample variances for 1000 samples, and i want to fit it to a chi-squared distribution. after making a loop for the simulation initially, i have the following code to compute the variances samples = replicate(n, rnorm(m, 0, 1), simplify=FALSE) variances = sapply(samples, var) summary(variances) can someone please help me fit this to a chi-squared distribution with n degrees

Hi R helpers! I have a question. I'm trying to create a function for an exercise. Here are the arguments I should include: x and y are numeric z is a name ("plus","minus","multiply","divide") and swap is logical. Here is what the function should do: When z="plus", then x+y is performed and so on for the other z names. It should give a NA

Dear guRus, I would like to loop over a medium amount of Sweave code, including both R and LaTeX chunks. Is there any way to do so? As an illustration, can I create a .tex file like this using a loop within a .Rnw file, where the "1,2,3" comes from some iteration variable in R? ################################################ \documentclass{article} \usepackage{Sweave} \begin{document}

[cid:9FBAC256-5A30-4061-B74E-53A6B7B3D7BA at c-team.local] Hi all, Our own appliance is a Linux Kernel and 2 initrd files for filesystem - one system and one config partition. After the yum upgrade on our build machine ISO files are generated but useless. I you are able to see the picture I would like to know "who" writes the - Loading /system.igz? failed! Is it the kernel already

Hi, this is about kicking-off regular compile-time tracking for LLVM and CLANG on the green dragon: http://lab.llvm.org:8080/green/view/Compile%20Time/ <http://lab.llvm.org:8080/green/view/Compile%20Time/>. The goal is to stay on top of compile-time issues immediately when they occur so they can be assessed rather than creeping in unnoticed. The methodology is simple: form a CTMark suite

Dear Experts, If I have a vector of numbers x. (1) How can I write R code to compute the moments around zero of order one to four? (2) How can I write R code to compute the moments around the mean of order one to four? Thank you very much! -- View this message in context: http://r.789695.n4.nabble.com/Writing-R-code-for-moments-tp2967946p2967946.html Sent from the R help mailing list archive