18 def euclidean(xa,xb):  argument
22 def braycurtis(xa,xb):  argument
26 def canberra(xa,xb):  argument
30 def chebyshev(xa,xb):  argument
34 def cityblock(xa,xb):  argument
38 def correlation(xa,xb):  argument
42 def cosine(xa,xb):  argument
46 def jensenshannon(xa,xb):  argument
50 def minkowski (xa,xb,dim):  argument
54 def dice(xa,xb):  argument
58 def hamming(xa,xb):  argument
62 def jaccard(xa,xb):  argument
66 def kulsinski(xa,xb):  argument
70 def rogerstanimoto(xa,xb):  argument
74 def russellrao(xa,xb):  argument
78 def sokalmichener(xa,xb):  argument
82 def sokalsneath(xa,xb):  argument
86 def yule(xa,xb):  argument