Phylogenetic heritability estimated at time t

H2(alpha, sigma, sigmae, t = Inf, tm = 0)

## Arguments

alpha, sigma numeric, parameters of the OU process acting on the genetic contributions numeric, environmental standard deviation time from the beginning of the process at which heritability should be calculated, i.e. epidemiologic time average time for within host evolution from getting infected until getting measured or passing on the infection to another host