getAInv | R Documentation |

Inverse of the Relationship matrix from a pedigree

`getAInv(ped)`

`ped` |
a pedigree that includes the individuals who occur in |

Determine the inverse of the relationship matrix from a pedigree
`ped`

.

sparse matrix, inverse of the relationship matrix

2010. A.I. Vazquez, D.M. Bates, G.J.M. Rosa, D. Gianola and K.A. Weigel. Technical Note: An R package for fitting generalized linear mixed models in animal breeding. Journal of Animal Science, 88:497-504.

```
## Example from chapter 2 of Mrode (2005)
ped <- pedigree(sire = c(NA,NA,1, 1,4,5),
dam = c(NA,NA,2,NA,3,2), label= 1:6)
getAInv(ped)
```

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