Trees are sorted by their mixed base representation, treating their leaves in the order of their labels (i.e. alphabetically, if leaves are labelled with text).
# S3 method for class 'multiPhylo'
sort(x, decreasing = FALSE, na.last = NA, ...)
# S3 method for class 'phylo'
e1 == e2
# S3 method for class 'phylo'
e1 < e2
# S3 method for class 'phylo'
e1 > e2
# S3 method for class 'MixedBase'
e1 == e2
# S3 method for class 'MixedBase'
e1 < e2
# S3 method for class 'MixedBase'
e1 > e2
As in sort()
.
Objects to be compared.