Jeromy Anglim's Blog: Psychology and Statistics

Tuesday, November 30, 2010

Sweave Tutorial 3: Console Input and Output - Multiple Choice Test Analysis

This post provides an example of using Sweave to perform an item analysis of a multiple choice test. It is designed as a tutorial for learning more about using Sweave in a mode where console input and output is displayed. Copies of all source code and the final PDF report is provided.

Monday, November 29, 2010

Sweave Tutorial 2: Batch Individual Personality Reports using R, Sweave, and LaTeX

This post documents an example of using Sweave to generate individualised personality reports based on responses to a personality test. Each report provides information on both the responses of the general sample and responses of the specific respondent. All source code is provided, and selected aspects are discussed, including makefiles use of \Sexpr, figures, and LaTeX tables using Sweave.

Getting Started with Git, EGit, Eclipse, and GitHub: Version Control for R Projects

This post provides information on
(a) installing Git using the Eclipse plugin Egit. (b) uploading repositories to GitHub, and (c) links to resources on Git, Git and LaTeX, and Git and R. The focus is on version control for people working on R, Sweave, and LaTeX related projects.

Saturday, November 27, 2010

Sweave Tutorial 1: Using Sweave, R, and Make to Generate a PDF of Multiple Choice Questions

In this post I present an example of using Sweave to prepare a PDF of formatted multiple choice questions. More broadly the example shows how to use Sweave to incorporate elements of a database into a formatted LaTeX document. It aims to be useful to anyone wanting to learn more about the almost magical powers of make, Sweave, and R.

Tuesday, November 23, 2010

makefiles for Sweave, R and LaTeX using Eclipse on Windows

This post provides a brief introduction to make and makefiles. In particular it describes how to set up make on Windows with an emphasis on using make in Eclipse on projects involving R, Sweave, and LaTeX.

Friday, November 12, 2010

Getting Started with Markdown: Benefits, Installation, Learning, and Conversion

I've recently adopted Markdown as a markup language for editing my blog posts. This post discusses (a) the benefits of Markdown, (b) installing a Markdown editor, (c) learning Markdown, and (d) converting between formats.

How to calculate confidence intervals of correlations with R

This post sets out how to calculate confidence intervals for correlations using R. Because I often get this question from people unfamiliar with R, it assumes no prior knowledge of R.