The cusp package for catastrophe fitting

I have submitted a paper to Journal of Statistical Software in which we present an add-on package for R with which you can fit the cusp catastrophe to data. Below are the links to the source package, as well as to binary distributions of the package. The paper that was submitted can be found here. In the manuscript, the mathematical theory underlying the cusp catastrophe is briefly summarized, and quantitative methods that have been available so far are discussed. It also gives an overview of the package and a demonstration of its use with two exam- ples.

Uploaded files:

cusp_2.2.tar.gz (package source; build with R CMD build cusp_2.2.tar.gz)
cusp_2.2_R_i386-darwin8.10.1.tar.gz (binary distribution for Mac OS X Tiger)
cusp_2.1.zip (binary distribution for Windows XP/Vista; build under R 2.6.0)
cusp.zip (zipped library directory for Windows XP/Vista; build under R 2.6.0)

Note that the cusp_2.1.zip file is an older version of the package that can be installed using the "Install from local zip file" option in the "Packages" menu on the Windows platform. A newer version, that includes vignettes, is in the cusp.zip file. This is the zipped library directory of the package that cannot, repeat cannot, be installed using the "Install from local zip file" functionality in R. To use this file save it to your desktop, double click it, and drag the folder 'cusp' that you see in the opened window to your desktop. Then, open the directory where R is installed, open the 'library' folder that you find there, and copy the cusp folder that is sitting on your desktop to this library folder. If you then restart R, the package should be available if you run the library(cusp) command.