[R] R function to compute kappa statistics for two vector

[Peter Dalgaard]

"Philip He" <hydinghua at gmail.com> writes:

> Dear R-user,
> 
> Did anybody know how to calculate the kappa statistics of two vectors for
> the agreement? for example:
> 
> a<-c(0,1,0,0,1,0)
> 
> b<-c(0,1,1,0,0,1)
> 
> I know the percent of agreement is 3/6, but how to get the kappa?

Multiple packages appear to have versions of Cohen's Kappa:

   irr, concord, psy, vcd, e1071

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