使用堆叠条形图的y轴标签进行计算( *4或成百分比)

original_data = [10, 20, 30]
multiplier = 4
scaled_data = [value * multiplier for value in original_data]
print(scaled_data)  # 输出: [40, 80, 120]

original_data = [10, 20, 30]
total = sum(original_data)
percentages = [(value / total) * 100 for value in original_data]
print(percentages)  # 输出: [16.67, 33.33, 50.0]

percentages_rounded = [round(p, 2) for p in percentages]
print(percentages_rounded)  # 输出: [16.67, 33.33, 50.0]

import matplotlib.pyplot as plt

# 数据
categories = ['A', 'B', 'C']
subcategories = ['X', 'Y', 'Z']
values = [[10, 20, 30], [15, 25, 35], [5, 10, 15]]

# 绘制堆叠条形图
fig, ax = plt.subplots()
ax.stackplot(categories, values, labels=subcategories)

# 添加百分比标签
for i, (cat, vals) in enumerate(zip(categories, values)):
    total = sum(vals)
    for j, val in enumerate(vals):
        percent = (val / total) * 100
        ax.text(i, sum(vals[:j+1]) - val / 2, f'{percent:.2f}%', ha='center', va='center')

ax.legend(loc='upper left')
plt.show()