Ultrametric distance matrix from distance matrix

I want to know about create code compute Ultrametric distance matrix from distance matrix. Ultrametric matrix distance is a special kind of metric space in which the triangle inequality is replaced with d(x,z) <= max{d(x,y),d(y,z)}. it is symmetry matrix.

Answer 1

[BhaTTa]

Refer to this github repo: https://github.com/ndag/ultrametrics/blob/master/README.md