Guest post to R-bloggers by Dr Kris Boudt. ——————– R has always been my favorite language to forecast financial risk in my research [Read more...]

(Re-posted from a post made by Hadley Wickham to the [R-pkgs] mailing list) # About the stringr package Strings are not glamorous, high-profile components of R, but they do [Read more...]

Dear All, The first issue of the third volume of The R Journal is now available at http://journal.r-project.org/current.html. Below are direct links to (most of) the [Read more...]

This is a guest post by Kyle Stokley. ————— My name is Kyle and I am an IT recruiter for R-Square.  I currently have an opening in Durham NC [Read more...]

A guest post by Christian Reusch giving a book review for the book “Financial Risk Forecasting” by Jon Danielsson. ———– As an [Read more...]

An interested PR piece I got from Janet Dobbins: ————— Luis Torgo is teaching an online course, “Data Mining in R: Learning with Case [Read more...]

(A guest post by Camiel de Koning) ————– When trying to replicate, verify or extend empirical research of others, a researcher generally [Read more...]

John Fox will be teaching a two-day introductory R workshop at McMaster University in Hamilton, Ontario, on May 24 and 25. The workshop will largely be based on materials [Read more...]

(Guest post on R-bloggers by Charlie Sharpsteen) Cameron and I are pleased to announce version 0.6.0 of the tikzDevice package which should be available shortly at your local [Read more...]

Robert Muenchen, the author of R for SAS and SPSS Users (A great book I’m proud to have on my shelf), has published this week an article in which he compares the [Read more...]

Details of the inaugural ZurichR and GenevaR meetings are as follows: [Read more...]

A happy announcement Hello everyone. After playing around with the idea of extending R-bloggers to languages other then English, today I went a head and did it. The new [Read more...]

The other day I was asked by a coworker hos to do a SAS Means By statement in R. I embarrassingly did not know how to so I wrote something up, and this is what I came up with, it takes a data.frame and an indexing variable and computes ... [Read more...]

Hello dear followers of R-bloggers.com Today (and probably in the next few days), R-bloggers will be down part of the time due to maintenance work. (Technical stuff: I am [Read more...]

What is the StackOverFlow Q&A website about? StackOverFlow.com (“SO” for short) is a programming Q & A site that’s free. Free to ask questions, free to answer questions, free to read. Free, And fast. For the R community, SO offers a growing database of R related questions and ... [Read more...]

Whenever you take a 1 column slice of a matrix, that gets automatically converted into a vector. But if you take a slice of several columns, it remains a matrix. The problem is you don’t always know in advance how big the slice will be, so if you do this: ... [Read more...]

Make sure to click on the image to see the large version. Code for this graph: moxbuller = function(n) { u = runif(n) v = runif(n) x = cos(2*pi*u)*sqrt(-2*log(v)) y = sin(2*pi*v)*sqrt(-2*log(u)) r = list(x=x, y=y) return(r) } r = ... [Read more...]