Как построить только нижний треугольник морской тепловой карты? ⇐ Python

[Anonymous]

У меня есть список списков all_genres, где каждый подсписок содержит жанры для определенного телешоу, а каждый отдельный подсписок относится к разным телешоу. Я хочу построить тепловую карту морского побережья, но только с нижней частью треугольника. Вот что я пробовал на данный момент:

Код: Выделить всё

import numpy as np
import matplotlib.pyplot as plt
import seaborn as sns
sns.set(rc={'figure.figsize':(16,9)})

all_genres = [['Drama', 'History'], ['Documentary'], ['Action', 'Drama', 'History'], ['Documentary'], ['Crime', 'Drama', 'Thriller'], ['Action', 'Adventure', 'Drama'], ['Crime', 'Drama', 'Thriller'], ['Documentary'], ['Documentary'], ['Documentary'], ['Animation', 'Adventure', 'Comedy'], ['Crime', 'Drama'], ['Documentary', 'History', 'War'], ['Animation', 'Action', 'Adventure'], ['Documentary'], ['Documentary', 'Music'], ['Crime', 'Drama', 'Mystery'], ['Documentary', 'History', 'War'], ['Fantasy', 'Horror', 'Mystery'], ['Documentary'], ['Drama'], ['Animation', 'Action', 'Adventure'], ['Adventure', 'Drama', 'Sci-Fi'], ['Documentary', 'History', 'War'], ['Biography', 'Drama', 'History'], ['Crime', 'Drama', 'Mystery'], ['Crime', 'Drama', 'Thriller'], ['Animation', 'Action', 'Adventure'], ['Animation', 'Crime', 'Drama'], ['Comedy', 'News', 'Talk-Show'], ['Documentary'], ['Animation', 'Action', 'Adventure'], ['Drama', 'Sci-Fi', 'Thriller'], ['Documentary'], ['Animation', 'Action', 'Adventure'], ['Comedy'], ['Comedy', 'Romance'], ['Drama', 'Romance'], ['Documentary'], ['Comedy'], ['Drama', 'Thriller', 'War'], ['Comedy'], ['Documentary', 'History', 'War'], ['Drama', 'Fantasy', 'Horror'], ['Animation', 'Adventure', 'Comedy'], ['Crime', 'Drama', 'Fantasy'], ['Comedy'], ['Animation', 'Adventure', 'Drama'], ['Comedy', 'Drama'], ['Comedy', 'Drama'], ['Biography', 'Crime', 'Drama'], ['Comedy', 'Drama'], ['Biography', 'Drama', 'History'], ['Comedy'], ['Drama'], ['Crime', 'Drama'], ['Comedy', 'War'], ['Drama', 'Mystery', 'Sci-Fi'], ['Action', 'Comedy', 'Drama'], ['Action', 'Drama', 'History'], ['Animation', 'Action', 'Adventure'], ['Comedy'], ['Crime', 'Drama', 'Thriller'], ['Animation', 'Comedy'], ['Crime', 'Drama', 'Mystery'], ['Crime', 'Thriller'], ['Animation', 'Action', 'Adventure'], ['Comedy'], ['Animation', 'Comedy'], ['Drama'], ['Drama', 'Mystery'], ['Comedy', 'Music'], ['Documentary', 'Comedy'], ['Comedy', 'Drama'], ['Animation', 'Action', 'Adventure'], ['Crime', 'Drama', 'History'], ['Animation', 'Action', 'Adventure'], ['Crime', 'Drama', 'Mystery'], ['Animation', 'Comedy', 'Drama'], ['Adventure', 'Drama', 'Western'], ['Documentary', 'Talk-Show'], ['Documentary', 'Crime'], ['Action', 'Adventure', 'Drama'], ['Drama', 'Horror', 'Mystery'], ['Crime', 'Drama'], ['Comedy'], ['Comedy', 'Drama'], ['Crime', 'Drama', 'Mystery'], ['Drama', 'History'], ['Crime', 'Drama', 'Mystery'], ['Crime', 'Drama', 'Mystery'], ['Crime', 'Drama', 'Thriller'], ['Comedy', 'Talk-Show'], ['Drama', 'Romance'], ['Animation', 'Crime', 'Drama'], ['Crime', 'Drama', 'Mystery'], ['Crime', 'Drama', 'Mystery'], ['Comedy'], ['Animation', 'Action', 'Adventure'], ['Animation', 'Action', 'Comedy'], ['Action', 'Drama', 'History'], ['Crime', 'Mystery', 'Thriller'], ['Comedy', 'Talk-Show'], ['Action', 'Adventure', 'Mystery'], ['Animation', 'Short', 'Comedy'], ['Action', 'Crime', 'Drama'], ['Comedy'], ['Comedy', 'Drama', 'Romance'], ['Animation', 'Action', 'Adventure'], ['Documentary', 'Crime'], ['Comedy', 'Drama', 'Music'], ['Comedy'], ['Drama', 'Romance'], ['Action', 'Crime', 'Drama'], ['Animation', 'Action', 'Adventure'], ['Drama', 'History', 'War'], ['Crime', 'Drama', 'Thriller'], ['Drama'], ['Action', 'Comedy'], ['Animation', 'Comedy'], ['Documentary', 'Adventure'], ['Documentary'], ['Comedy', 'Drama'], ['Animation', 'Action', 'Adventure'], ['Comedy', 'Game-Show'], ['Drama', 'Sport'], ['Adventure', 'Drama', 'Family'], ['Comedy'], ['Comedy'], ['Crime', 'Drama', 'Mystery'], ['Comedy'], ['Adventure', 'Comedy', 'Drama'], ['Family', 'Fantasy', 'Music'], ['Comedy', 'Drama'], ['Drama', 'Romance'], ['Animation', 'Action', 'Adventure'], ['Drama'], ['Action', 'Crime', 'Drama'], ['Comedy', 'Music', 'Musical'], ['Comedy'], ['Animation', 'Action', 'Drama'], ['Documentary'], ['Crime', 'Drama', 'Mystery'], ['Drama', 'War'], ['Animation', 'Action', 'Adventure'], ['Crime', 'Drama', 'Mystery'], ['Comedy', 'Drama'], ['Documentary', 'Biography', 'Crime'], ['Crime', 'Drama', 'History'], ['Comedy'], ['Animation', 'Action', 'Adventure'], ['Animation', 'Action', 'Adventure'], ['Biography', 'Drama', 'History'], ['Comedy', 'Talk-Show'], ['Comedy', 'Sci-Fi'], ['Comedy'], ['Crime', 'Drama'], ['Comedy', 'Crime', 'Drama'], ['Comedy', 'Drama'], ['Comedy', 'Romance'], ['Animation', 'Action', 'Adventure'], ['Crime', 'Drama', 'Mystery'], ['Action', 'Adventure', 'Crime'], ['Animation', 'Action', 'Adventure'], ['Comedy'], ['Animation', 'Action', 'Adventure'], ['Crime', 'Drama', 'Thriller'], ['Comedy', 'Family'], ['Documentary', 'History', 'War'], ['Biography', 'Drama'], ['Comedy'], ['Comedy', 'Musical', 'Sci-Fi'], ['Animation', 'Comedy', 'Drama'], ['Documentary', 'Sport'], ['Comedy', 'Game-Show'], ['Action', 'Adventure', 'Drama'], ['Comedy', 'Reality-TV'], ['Animation', 'Action', 'Adventure'],  ['Drama', 'Romance'], ['Crime', 'Drama', 'Horror'], ['Comedy'], ['Comedy', 'Drama', 'Family'], ['Crime', 'Drama', 'Thriller'], ['Crime', 'Drama', 'Mystery'], ['Animation', 'Drama', 'Fantasy'], ['Action', 'Adventure', 'Biography'], ['Comedy', 'Drama'], ['Drama', 'Fantasy', 'Romance'], ['Action', 'Crime', 'Mystery'], ['Crime', 'Drama', 'Thriller'], ['Crime', 'Drama', 'Mystery'], ['Crime', 'Drama', 'Thriller'], ['Drama', 'Mystery', 'Sci-Fi'], ['Drama', 'Sci-Fi', 'Thriller'], ['Animation', 'Comedy', 'Sci-Fi'], ['Crime', 'Drama', 'Mystery'], ['Drama', 'Thriller'], ['Comedy'], ['Drama'], ['Comedy'], ['Animation', 'Action', 'Crime'], ['Biography', 'Crime', 'Drama'], ['Biography', 'Drama', 'History'], ['Comedy'], ['Action', 'Adventure', 'Biography'], ['Action', 'Comedy', 'Fantasy'], ['Crime', 'Drama'], ['Crime', 'Drama'], ['Crime', 'Drama'], ['Comedy', 'Drama', 'Romance'], ['Animation', 'Action', 'Adventure'], ['Animation', 'Action', 'Family'], ['Drama'], ['Animation', 'Comedy', 'Sci-Fi'], ['Action', 'Drama', 'History'], ['Crime', 'Drama', 'Mystery'], ['Crime', 'Drama'], ['Comedy', 'News', 'Talk-Show'], ['Animation', 'Action', 'Adventure'], ['Animation', 'Action', 'Adventure'], ['Drama', 'Mystery', 'Thriller'], ['Comedy', 'News', 'Talk-Show'], ['Comedy', 'Fantasy', 'Horror'], ['Drama', 'Fantasy', 'Mystery'], ['Adventure', 'Fantasy'], ['Animation', 'Action', 'Adventure'], ['Comedy', 'Crime'], ['Crime', 'Drama'], ['Comedy', 'Drama'], ['Drama', 'Mystery', 'Sci-Fi'], ['Comedy', 'Drama'], ['Comedy', 'Talk-Show'], ['Drama'], ['Animation', 'Family', 'Comedy'], ['Comedy', 'Horror'], ['Comedy', 'Drama'], ['Drama'], ['Documentary', 'Short'], ['Crime', 'Drama', 'Mystery'], ['Comedy', 'Romance'], ['Comedy', 'Family', 'Music'], ['Drama', 'Mystery', 'Sci-Fi'], ['Comedy', 'Crime']]
unique_genres = sorted({i for j in all_genres for i in j})
genre_matrix = []
for i in unique_genres:
temp = []
for j in unique_genres:
s = sum(1  if i in m and j in m and i!=j else 0 for m in all_genres)
temp.append(s)
genre_matrix.append(temp)
genre_matrix = np.array(genre_matrix)

ax = sns.heatmap(genre_matrix, xticklabels=unique_genres, yticklabels=unique_genres, annot=True, linewidths=.42, cbar=True, cbar_kws={'label': 'Colorbar'})
#plt.savefig('seaborn_cross_fold_plot.png', bbox_inches="tight", pad_inches=0)
plt.show()

Результирующая картинка такая:



Я хочу получить только нижнюю или нижнюю часть этой тепловой карты, поскольку левая нижняя часть и верхняя правая часть будут одинаковыми, т. е. они просто отражают диагональную линию. В результате я хочу получить примерно такую ​​картину:




Как это сделать в seaborn или в matplotlib?

Подробнее здесь: https://stackoverflow.com/questions/574 ... rn-heatmap