Calculate the BLD between two trees
Description
Returns the branch length distance between two trees.
Usage
1  calcDstBLD(tree_1, tree_2, nrmlsd = FALSE, ...)

Arguments
tree_1 

tree_2 

nrmlsd 
Boolean, should returned value be between 0 and 1? Default, FALSE. 
... 

Details
BLD is the RobinsonFoulds distance weighted by branch length. Instead of summing the differences in partitions between the two trees, the metric takes the square root of the squared difference in branch lengths. Parallelizable.
References
Kuhner, M. K. and Felsenstein, J. (1994) Simulation comparison of phylogeny algorithms under equal and unequal evolutionary rates. Molecular Biology and Evolution, 11, 459468.
See Also
calcDstTrp
, calcDstRF
https://github.com/DomBennett/treeman/wiki/calcmethods
Examples
1 2 3 4  library(treeman)
tree_1 < randTree(10)
tree_2 < randTree(10)
calcDstBLD(tree_1, tree_2)
