Expected R2 for multiple trait prediction of continuous traits
predict_r2_mt(h2x, Nx, h2y, Ny, rg, Me, M)
is the heritability of the target trait
is the number of samples for the target trait
is the heritability of the correlated trait
is the number of samples for the correlated trait
is the genetic correlation between the target and correlated trait
is the number of independent chromosome segments
is the number of markers