Internal: create character matrix out of allele list
For use in alleleinit.
Creates a matrix of characters in which there are two rows for
every individual corresponding to the two alleles in every locus
(column) out of a list of lists, such as required by
alleledist.
build.charmatrix(allelelist,n.individuals,n.variables)
| allelelist | A list of lists. In the "outer" list, there are
 | 
| n.individuals | integer. Number of individuals. | 
| n.variables | integer. Number of loci. | 
A matrix of characters in which there are two rows for every individual corresponding to the two alleles in every locus (column).
alist <- list()
  alist[[1]] <- list(c("A","A"),c("B","A"),c(NA,NA))
  alist[[2]] <- list(c("A","C"),c("B","B"),c("A","D"))
  build.charmatrix(alist,3,2)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.