对文件profit.xls中的盈利数据做出 帕累托图(帕累托图的定义可百度),用matplotlib.pyplot作图,写出代码。
时间: 2024-10-17 16:13:44 浏览: 43
帕累托图是一种图形工具,用于显示项目按照重要性排序的比例分布。在这种情况下,我们将根据利润数据制作一个帕累托图,以展示数据集中盈利最高的部分占比情况。这里是一个简单的Python代码示例,使用matplotlib.pyplot库:
```python
import pandas as pd
import matplotlib.pyplot as plt
# 读取profit.xls文件中的数据
data = pd.read_excel('profit.xls')
# 假设利润列名为'Profit'
profits = data['Profit']
# 计算累积频率(百分比)
cumulative_profits = profits.value_counts().sort_values(ascending=False).cumsum() / profits.sum()
# 创建帕累托图
plt.figure(figsize=(10, 6))
plt.plot(cumulative_profits.index, cumulative_profits, marker='o')
plt.xlabel('利润类别')
plt.ylabel('累计比例')
plt.title('利润数据的帕累托图')
plt.grid(True)
plt.xticks(rotation=45) # 根据需要调整x轴标签角度
plt.fill_between(cumulative_profits.index, 0, cumulative_profits, alpha=0.5) # 阴影部分代表累积比例
# 绘制直方图,与帕累托图一起展示
plt.bar(profits.index, profits, color='skyblue', align='center', alpha=0.5, edgecolor='black')
plt.legend(['累积比例', '利润分布'], loc='upper right')
plt.show()
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