relfactor | R Documentation |

Relationship factor from a pedigree

`relfactor(ped, labs)`

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

`labs` |
a character vector or a factor giving the labels to
which to restrict the relationship matrix. If |

Determine the right Cholesky factor of the relationship matrix for the
pedigree `ped`

, possibly restricted to the specific labels that
occur in `labs`

.

an upper triangular, sparse (right) Cholesky factor 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)
(fac <- relfactor(ped))
crossprod(fac) # the relationship matrix
getA(ped) # the relationship matrix
```

Embedding an R snippet on your website

Add the following code to your website.

For more information on customizing the embed code, read Embedding Snippets.