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trend-analysis

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基于多维度数据进行分级评估与趋势预测，通过设定差异化增长率计算预测值，并生成对比可视化图表，适用于绩效评估、目标设定等场景。

skills/sn-da-excel-workflow/capability/excel-data-analysis/trend-analysis/SKILL.md

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Step1 加载数据并配置环境，设置中文字体以确保可视化图表正常显示。
```python
import pandas as pd
import numpy as np
import matplotlib.pyplot as plt
import warnings
warnings.filterwarnings('ignore')

# 设置中文字体，优先使用 WenQuanYi Zen Hei，备选 SimHei 和 DejaVu Sans
plt.rcParams['font.sans-serif'] = ['WenQuanYi Zen Hei', 'SimHei', 'DejaVu Sans']
plt.rcParams['axes.unicode_minus'] = False

# 加载数据文件
file_path = 'your_data.xlsx'
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