The Journal Volume 4/2, December 2012 A peer-reviewed, open-access publication of the R Foundation for Statistical Computing Contents Editorial . .3 Contributed Research Articles What’s in a Name? . .5 It’s Not What You Draw, It’s What You Don’t Draw . 13 Debugging grid Graphics . 19 frailtyHL: A Package for Fitting Frailty Models with H-likelihood . 28 influence.ME: Tools for Detecting Influential Data in Mixed Effects Models . 38 The crs Package: Nonparametric Regression Splines for Continuous and Categorical Predic- tors.................................................... 48 Rfit: Rank-based Estimation for Linear Models . 57 Graphical Markov Models with Mixed Graphs in R . 65 Programmer’s Niche The State of Naming Conventions in R . 74 News and Notes Changes in R . 76 Changes on CRAN . 80 News from the Bioconductor Project . 101 R Foundation News . 102 2 The Journal is a peer-reviewed publication of the R Foun- dation for Statistical Computing. Communications regarding this pub- lication should be addressed to the editors. All articles are licensed un- der the Creative Commons Attribution 3.0 Unported license (CC BY 3.0, http://creativecommons.org/licenses/by/3.0/). Prospective authors will find detailed and up-to-date submission in- structions on the Journal’s homepage. Editor-in-Chief: Martyn Plummer Editorial Board: Heather Turner, Hadley Wickham, and Deepayan Sarkar Editor Help Desk: Uwe Ligges Editor Book Reviews: G. Jay Kerns Department of Mathematics and Statistics Youngstown State University Youngstown, Ohio 44555-0002 USA
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