Question

我有以下数据集：

    let data = [
        {patientId: 100, site: "AAA", timepoint: 0},
        {patientId: 100, site: "AAA", timepoint: 2},
        {patientId: 100, site: "AAA", timepoint: 4},
        {patientId: 100, site: "AAA", timepoint: 6},
        {patientId: 100, site: "AAA", timepoint: 8},
        {patientId: 100, site: "AAA", timepoint: 12},
        {patientId: 101, site: "AAA", timepoint: 0},
        {patientId: 101, site: "AAA", timepoint: 2},
        {patientId: 101, site: "AAA", timepoint: 4},
        {patientId: 200, site: "BBB", timepoint: 2},
        {patientId: 200, site: "BBB", timepoint: 4},
        {patientId: 200, site: "BBB", timepoint: 6},
        {patientId: 201, site: "BBB", timepoint: 0},
        {patientId: 201, site: "BBB", timepoint: 6},
        {patientId: 201, site: "BBB", timepoint: 8},
        {patientId: 201, site: "BBB", timepoint: 12},
        {patientId: 202, site: "BBB", timepoint: 0},
        {patientId: 202, site: "BBB", timepoint: 2},
        {patientId: 202, site: "BBB", timepoint: 4},
        {patientId: 202, site: "BBB", timepoint: 6},
        {patientId: 202, site: "BBB", timepoint: 8},
        {patientId: 202, site: "BBB", timepoint: 12}
    ];

我想建立一个饼图，反映出具有给定时间点数的患者数量。因此，基于上述数据得到的饼图将是：

3个时间点 - 2（患者101和患者6）
4个时间点 - 1（患者201）
6个时间点 - 2（患者100和患者202）

我希望此维度/组能够与为crossfilter数据定义的其他基本维度/组一起使用。

构建Crossfilter维度/分组以汇总数据

0 个答案: