📊 添加可视化数据

viz_data.json

@@ -0,0 +1,37 @@
+{
+  "description": "学生考试成绩数据 - 可同时绘制 5 种图（条形图/折线图/饼图/雷达图/散点图）",
+  "bar_chart": {
+    "title": "各学生数学成绩对比",
+    "x": ["张三", "李四", "王五", "赵六", "钱七", "孙八", "周九", "吴十", "郑明", "王芳"],
+    "y": [92, 88, 76, 85, 90, 82, 78, 95, 72, 88]
+  },
+  "line_chart": {
+    "title": "班级各科平均分趋势（6个月）",
+    "month": ["1月", "2月", "3月", "4月", "5月", "6月"],
+    "语文": [78, 80, 82, 85, 83, 86],
+    "数学": [82, 84, 85, 87, 88, 90],
+    "英语": [80, 82, 81, 84, 85, 87]
+  },
+  "pie_chart": {
+    "title": "班级成绩等级分布",
+    "labels": ["优秀(>=90)", "良好(80-89)", "中等(70-79)", "待提高(<70)"],
+    "values": [1, 7, 2, 0]
+  },
+  "radar_chart": {
+    "title": "三位学生五科成绩对比",
+    "categories": ["语文", "数学", "英语", "物理", "化学"],
+    "students": {
+      "张三": [85, 92, 78, 88, 90],
+      "李四": [78, 88, 92, 75, 82],
+      "王五": [92, 76, 85, 90, 78]
+    }
+  },
+  "scatter_chart": {
+    "title": "学习时长 vs 数学成绩",
+    "x_label": "每周学习时长(小时)",
+    "y_label": "数学成绩",
+    "x": [3, 5, 4, 6, 5, 4, 5, 6, 2, 7],
+    "y": [92, 88, 76, 85, 90, 82, 78, 95, 72, 88],
+    "labels": ["张三", "李四", "王五", "赵六", "钱七", "孙八", "周九", "吴十", "郑明", "王芳"]
+  }
+}