We can do this by using a 4×3 matrix, each row corresponding to one element in A, each column corresponding to each of the elements of B. ... <看更多>

As @Wen pointed out in comments, read the data from file (containing no header line): > t = read.table('test.txt',sep=';') > t V1 V2 1 A a 2 ... ... <看更多>

matrix containing all additive genetic relationships in a population is called numerator relationship matrix (A). ... <看更多>