The R-Package "RLadyBug"

• Analysis of small scale infectious diseases possibly with a spatial grid component using stochastic Susceptible-Exposed-Infectious-Recovered models (SEIR). The R package wraps functionality of a Java program, thus a java virtual machine has to be installed on your computer.
  
• The package comes with ABSOLUTELY NO WARRANTY. This is free software with all R code available under a copyleft left. However, some of the underlying Java code its use restricted to NON-COMMERCIAL use. Read the file "LICENSE" of the package for a long story about the unresolved licensing issue of "RLadyBug", which currently prevents it to re-appear on CRAN.
  

The RLadyBug package used to be available from CRAN (0.6-1). In Apr 2012 it was removed from CRAN due to inactivity and once I've tried to upload again, it was not allowed again due to a Catch 22 licensing issue. So meanwhile, sources and binaries of the current version 0.7-1 can be found here:

• RLadyBug_0.7-1.tar.gz
• RLadyBug_0.7-1.zip
  

Alternatively, you can download the package from R-Forge, where you can also find the sources:



install.packages("RLadyBug", repos="http://R-Forge.R-project.org")

• Read the package manual containing examples on how to use the package and its features.
• CSDA paper RLadyBug—An R package for stochastic epidemic models  (old preprint)
  
• Frequently Asked Questions (FAQ)

• [16/02/2013] Version 0.7-1 is now available from this webpage. It contains a fix of the onLoad issues, which caused it to be removed from CRAN. Also note that the twinSIR functionality is not part of the package anymore. It has been moved to the R package surveillance.
  
• [Apr 2012] Package removed from CRAN.
  
• [10/10/2009] Version 0.6-0 is now available from CRAN. The package now contains an implementation of the two-component SIR model described in Höhle (2009), Additive-Multiplicative Regression Models for Spatio-Temporal Epidemics, which is accepted for publication in Biometrical Journal. A preprint of the work can be found here. Addon: The functionality has been moved to the R package surveillance as function "twinSIR".
  
• [02/02/2009] Version 0.5-0 available from CRAN. Experimental code for additive-multiplicative model fitting.
  
• [16/01/2008] Version 0.4-3 available from CRAN. Contains bug fixes and the handling of unknown recovery times.
• [24/09/2007] Version 0.4-2 is now available from CRAN. The update mainly consists in making the package compatible with the new rJava version and converting .RData objects to >= 2.4.0 format
  
• [09/01/2007] The package use is described in the paper RLadyBug—An R package for stochastic epidemic models, Computational Statistics and Data Analysis, 52(2), pp. 680-686. 
• [03/08/2006] RLadyBug v0.4 is now available. The Java program is envoked using the rJava interface, plot methods have been made more concordant with R and data is now loadable with data().
• [01/03/2006] RLadyBug v0.1 is now available. For a quick demo try demo("article-csda") after installing the package.