R for SAS and SPSS Users (Google eBook)
"R is a powerful and free software system for data analysis and graphics, with over 1,200 add-on packages available. This book introduces R using SAS and SPSS terms with which you are already familiar. It demonstrates which of the add-on packages are most like SAS and SPSS and compares them to R's built-in functions. It steps through over 30 programs written in all three packages, comparing and contrasting the packages' differing approaches. The programs and practice datasets are available for download. The glossary defines over 50 R terms using SAS/SPSS jargon and again using R jargon. The table of contents and the index allow you to find equivalent R functions by looking up both SAS statements and SPSS commands. When finished, you will be able to import data, manage and transform it, create publication quality graphics, and perform basic statistical analyses."--Publisher's website.
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How R Stores Data
Managing Your Files and Workspace
Graphics with ggplot2 GPL
Selecting Variables Var Variables
Selecting Observations Where If Select If Filter
Selecting Both Variables and Observations
Converting Data Structures
Value Labels or Formats and Measurement Level
aes(pretest aggregate ANOVA argument tells barplot boxplot Chap character vector columns command confidence intervals create data frame data.frame dataset default Example programs factor FALSE function call gender q1 q2 geom geom_point ggplot approach ggplot(mydata100 graph graphical user interface grep help file histogram Hmisc package index numbers install Jitter load logical vector matrix mean function methods Microsoft Windows missing values mtext line multiframe myBys mydata mydataNA myLib.mydata mymatrix myModel myQnames myqs na.rm=TRUE na.strings names(mydata Ó Springer ScienceşBusiness objects options output p-value plot function posttest pretest PROC PRINT procedures q variables qplot qplot(pretest recode regression regular expression Renaming row names SAS and SPSS SAS or SPSS Scatterplot Selecting Observations Selecting Variables setwd("/myRfolder specify Springer ScienceşBusiness Media SPSS Users statistics Table text file traditional graphics value labels variable names window workshop gender q1 workspace