我有与下面的json相似的数据。
data = [
{"student_id": 1, "clubs": ["Photography", "Drama" ], "sports": ["Soccer", "Baseball", "Biking"], "gender": "Male", "age" : 12},
{"student_id": 2, "clubs": ["Debating", "Drama", "Art" ], "sports": [ "Basketball", ], "gender": "Male", "age" : 15},
{"student_id": 3, "clubs": ["Math Club", "Drama" ], "sports": ["Swimming", "Running", "Biking"], "gender": "Male", "age" : 12},
{"student_id": 4, "clubs": [ "Drama", "Art" ], "sports": [ "Baseball", ], "gender": "Male", "age" : 11},
{"student_id": 5, "clubs": ["Math Club", "Photography" ], "sports": ["Basketball", "Biking"], "gender": "Female", "age" : 12},
{"student_id": 6, "clubs": ["Drama", "Art" ], "sports": [ "Volleyball", ], "gender": "Female", "age" : 16},
]
我可以使用crossfilter.js回答问题（本质上是组数或总和），例如有多少学生是摄影俱乐部的成员并打篮球。
本质上，俱乐部使用一张图表，运动时使用一张图表。 显示每个属性（维度）的计数并在它们之间进行过滤。 是的，学生可能会重复计算，因为他们可能是许多俱乐部的成员或参加许多运动。