An Introduction to S and The Hmisc and Design Libraries Carlos Alzola, MS Statistical Consultant 501 SE Glyndon Street Vienna, Va 22180
[email protected] Frank Harrell, PhD Professor of Biostatistics Department of Biostatistics Vanderbilt University School of Medicine S-2323 Medical Center North Nashville, Tn 37232
[email protected] http://biostat.mc.vanderbilt.edu/twiki/bin/view/Main/RS November 16, 2004 ii Updates to this document may be obtained from biostat.mc.vanderbilt.edu/twiki/pub/Main/RS/sintro.pdf. Contents 1 Introduction 1 1.1 S, S-Plus, R, and Source References ........................... 1 1.1.1 R ........................................... 4 1.2 Starting S .......................................... 4 1.2.1 UNIX/Linux .................................... 4 1.2.2 Windows ...................................... 5 1.3 Commands vs. GUIs .................................... 7 1.4 Basic S Commands ..................................... 7 1.5 Methods for Entering and Saving S Commands ..................... 9 1.5.1 Specifying System File Names in S ........................ 11 1.6 Differences Between S and SAS .............................. 11 1.7 A Comparison of UNIX/Linux and Windows for Running S .............. 18 1.8 System Requirements ................................... 19 1.9 Some Useful System Tools ................................. 19 2 Objects, Getting Help, Functions, Attributes, and Libraries 25 2.1 Objects ........................................... 25 2.2 Getting Help ........................................ 25 2.3