The R Journal, Volume 3/1, June 2011

Complete issue

Complete bibliography

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Table of contents

Editorial 3

Contributed research articles

testthat: Get Started with Testing
Hadley Wickham 5

Content-Based Social Network Analysis of Mailing Lists
Angela Bohn, Ingo Feinerer, Kurt Hornik and Patrick Mair 11

Rmetrics - timeDate Package
Yohan Chalabi, Martin Mächler and Diethelm Würtz 19

The digitize Package: Extracting Numerical Data from Scatterplots
Timothée Poisot 25

Differential Evolution with DEoptim
David Ardia, Kris Boudt, Peter Carl, Katharine M. Mullen and Brian G. Peterson 27

rworldmap : a new R package for mapping global data
Andy South 35

Cryptographic Boolean Functions with R
Frédéric Lafitte, Dirk Van Heule and Julien Van hamme 44

Raster Images in R Graphics
Paul Murrell 48

Probabilistic Weather Forecasting in R
Chris Fraley, Adrian Raftery, Tilmann Gneiting, McLean Sloughter and Veronica Berrocal 55

Analyzing an Electronic Limit Order Book
David Kane, Andrew Liu and Khanh Nguyen 64

Help desk
Giving a useR! Talk
Rob J. Hyndman 69

Help desk
Tips for Presenting Your Work
Dianne Cook 72

News and notes

Forest Analytics with R (Use R) 75

Conference Review: Third Meeting of Polish R Users, The Influenza Challenge 76

Conference Review: Kickoff Workshop for Project MOSAIC 78

Changes in R 79

Changes on CRAN 89

News from the Bioconductor Project 101

R Foundation News 102