Function for applying R inverse to AtG in REML EM algorithm

Rinv.AtG(G, AtG, GtAAtG, tau, sigma)

G | Matrix of genotype markers (size n x L) |
---|---|

AtG | AtG from pre-computation |

GtAAtG | GtAAtG from pre-computation |

tau | Variance component from G main effect |

sigma | Variance component from model noise epsilon |

Matrix resulting from left multiplication of Rinv with input matrix AtG