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example.js
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example.js
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const { Dimension, DimensionManager } = require('./index')
const data = [
{ group: 'A', subgroup: 'one', a: 1, b: 1 },
{ group: 'A', subgroup: 'one', a: 2, b: 2 },
{ group: 'A', subgroup: 'one', a: 3, b: 3 },
{ group: 'A', subgroup: 'two', a: 1, b: 10 },
{ group: 'A', subgroup: 'two', a: 2, b: 20 },
{ group: 'A', subgroup: 'two', a: 3, b: 30 },
{ group: 'A', subgroup: 'three', a: 1, b: 100 },
{ group: 'A', subgroup: 'three', a: 2, b: 200 },
{ group: 'A', subgroup: 'three', a: 3, b: 300 },
{ group: 'B', subgroup: 'one', a: 1, b: 1000 },
{ group: 'B', subgroup: 'one', a: 2, b: 2000 },
{ group: 'B', subgroup: 'one', a: 3, b: 3000 }
]
// Create a dimension
const dim1 = new Dimension({
id: 'dim1',
groupSeries: (d) => d.group,
groupData: (d) => d.a,
reduceInit: (d) => ({ x: d.a, y: 0, count: 0 }),
reduceAdd: (out, d) => { out.y += d.b },
reduceRemove: (out, d) => { out.y -= d.b }
})
const dim2 = new Dimension({
id: 'dim2',
groupSeries: (d) => d.subgroup,
groupData: (d) => d.a,
reduceInit: (d) => ({ x: d.a, y: 0, count: 0 }),
reduceAdd: (out, d) => { out.y += d.b },
reduceRemove: (out, d) => { out.y -= d.b }
})
const dimensions = new DimensionManager()
dimensions.addDimension(dim1)
dimensions.addDimension(dim2)
dimensions.addData(data)
dim1.select('A')
console.log(dim2.getData())