filter

Filter data with specified conditions. Similar to Array.prototype.filter.

Getting Started

const data = [
  { a: 1, b: 2, c: 3 },
  { a: 4, b: 5, c: 6 },
];

chart.options({
  type: 'view',
  data: {
    type: 'inline',
    value: data,
    transform: [
      {
        type: 'filter',
        callback: (d) => d.a < 3,
      },
    ],
  },
});

After the above example is processed, the data becomes:

[{ a: 1, b: 2, c: 3 }];

Options

Property	Description	Type	Default
callback	Function that takes current data and returns processed data	`(d: any, idx: number, arr: any[]) => boolean`	`(d) => d !== undefined && d !== null && !Number.isNaN(d)`