stacked-chart-visualization

name: stacked-chart-visualization description: "处理包含百分比字符串的分类占比数据，通过补全缺失维度并生成堆叠柱状图，直观展示多维度构成随时间或分类的变化趋势。"

Stacked_Chart_Visualization

Step1 定义百分比转换函数并提取原始数据。通过正则表达式或字符串处理将百分比格式转换为可计算的浮点数。

import pandas as pd
import matplotlib.pyplot as plt
import seaborn as sns

# 配置中文字体，确保图表标签正常显示
plt.rcParams['font.sans-serif'] = ['SimHei', 'DejaVu Sans']
plt.rcParams['axes.unicode_minus'] = False

def convert_percentage(val):
    """
    将百分比字符串转换为浮点数。
    处理逻辑：去除百分号并转换为 float，若已经是数值则直接返回。
    """
    if isinstance(val, str):
        return float(val.strip('%'))
    return val

# 示例数据提取逻辑（实际应用中替换为从 DataFrame 提取）
time_labels = ['1月', '2月', '3月', '4月', '5月', '6月'] # 泛化时间轴
cat1_raw = ['23.21%', '22.98%', '24.31%', '24.53%', '23.84%', '24.80%']
cat2_raw = ['25.17%', '25.67%', '25.77%', '25.98%', '25.17%', '25.61%']
cat3_raw = ['28.12%', '28.37%', '26.58%', '25.83%', '26.49%', '25.17%']

cat1_ratios = [convert_percentage(x) for x in cat1_raw]
cat2_ratios = [convert_percentage(x) for x in cat2_raw]
cat3_ratios = [convert_percentage(x) for x in cat3_raw]