我正在使用matplotlib绘制层次聚类,
import numpy as np
from scipy.cluster.hierarchy import dendrogram
def plot_dendrogram(model, **kwargs):
# Children of hierarchical clustering
children = model.children_
# Distances between each pair of children
# Since we don't have this information, we can use a uniform one for plotting
distance = np.arange(children.shape[0])
# The number of observations contained in each cluster level
no_of_observations = np.arange(2, children.shape[0]+2)
# Create linkage matrix and then plot the dendrogram
linkage_matrix = np.column_stack([children, distance, no_of_observations]).astype(float)
# Plot the corresponding dendrogram
dendrogram(linkage_matrix, **kwargs)
plt.figure(figsize=(100,100))
plt.title('Hierarchical Clustering Dendrogram')
plot_dendrogram(clustering, labels=liste_tags)
plt.show()
我可以可视化分层聚类,但是该图的质量和分辨率都不好。特别是,当我保存图解并尝试放大以查看标签时。
我得到此图像:
最佳答案
MatPlotLib Figure对象具有一个dpi
参数。只需设置plt.figure(figsize=(100,100), dpi=300)
之类的内容即可。