Is a numerator relationship matrix (1814 x 1814) computed
from a pedigree that traced back many generations.
Arguments
References
de los Campos G., H. Naya, D. Gianola, J. Crossa, A. Legarra, E. Manfredi, K. Weigel and J. Cotes. 2009.
Predicting Quantitative Traits with Regression Models for Dense Molecular Markers and Pedigree. Genetics182: 375-385.