R help - Jul 2010 - Calculating Gwet's AC1 statistic

Hi,

After searching the archives and Google and not turning up anything, I
thought I'd ask here.

Has anyone done an R package for calculating Gwet's AC1 statistic and
variance?

K.L. Gwet. Computing inter-rater reliability and its variance in the
presence of high agreement. Br J Math Stat Psychol. 2008 May;61(Pt
1):29-48. http://www.ncbi.nlm.nih.gov/pubmed/18482474

Thanks,


--pete