python - Scipy 树状图叶节点排序

Question

我正在尝试更改 Scipy dendrogram 中叶节点的顺序情节功能。考虑以下代码段:

from scipy.cluster.hierarchy import linkage, dendrogram
import matplotlib.pyplot as plt
dists = [ 2., 10.,  3.]
lx = linkage(dists, 'complete')
dendrogram(lx)
plt.show()

生成的树状图是:

我想在此图中将叶节点的顺序更改为 0, 1, 2。有没有一种简单的方法可以实现这一目标？

我尝试了 dendrogram 中参数 count_sort 和 distance_sort 的所有可能设置，但顺序保持不变。

Answer 1

以下评论出现在source code of the dendrogram scipy method :

# This feature was thought about but never implemented (still useful?):
#
#         ... = dendrogram(..., leaves_order=None)
#
#         Plots the leaves in the order specified by a vector of
#         original observation indices. If the vector contains duplicates
#         or results in a crossing, an exception will be thrown. Passing
#         None orders leaf nodes based on the order they appear in the
#         pre-order traversal.

所以这是一个相关的问题。您可以联系 Scipy 开发人员 (SciPy Project Mailing Lists) 表达您对此增强的兴趣，以便他们意识到它很有用并给予它更高的优先级。