Specifying the modelThis is the second part of a series of notes demonstrating use of the R package, R2MLwiN, an R command interface to the multilevel modelling software package, MLwiN (see the MLwiN site for getting access to MLwiN). The first set of notes showed how to get started ... [Read more...]

Using R and ggplot2 to draw a scatterplot with the two marginal boxplotsDrawing a scatterplot with the marginal boxplots (or marginal histograms or marginal density plots) has always been a bit tricky (well for me anyway). The approach I take here is, first, to draw the three separate plots using ... [Read more...]

Getting started with the R2MLwiN packageWith the release of the R2MLwiN package late 2012, R users have access to another software package for running Bayesian models using Markov chain Monte Carlo (MCMC) methods. R2MLwiN is an R command interface to MLwiN, allowing users to fit multilevel models using ... [Read more...]

1. IntroductionThese notes give the steps to configure a Windows machine so that R can communicate with Microsoft Access databases. It turns out that the same mechanism can be used to connect with Microsoft Excel workbooks, so the notes include R to Excel communication as well. In R, there are two ... [Read more...]

Creating SQLite databases from R 1. IntroductionThese notes show how to create an SQLite database from within R. The notes outline two way in which R can communicate with SQLite databases: using the RSQLite package and using the sqldf package. Both packages use reasonably standard versions of SQL to administer and ... [Read more...]