Calculates the K factor for the Elo rating system based on number of games played.
kgames(rating, games, elite = NULL, gv = 30, kv = c(32,26))A numeric vector of player ratings. The K factor does not depend on this quantity.
A numeric vector with the number of games played by each player.
Not used.
A numeric vector of length one less than kv
giving the thresholds for the number of games played.
A numeric vector of length one more than gv
giving the different K factors that the function can
produce.
A numeric vector of K factors.
This function is designed to be used for the kfac argument
of either fide or elo. It returns
kv[i] for players who have played a total number of games
within the intervals defined by gv (closed on the right).