Image Sharpeningd3.blurd3.rankd3.flatGroup, d3.flatRollupd3.groupSortSet Operationsd3.groups as a hierarchyd3.fsum, d3.AdderTime thresholds for d3.bind3.cumsumTidy Stacked Area ChartMerging Duplicate Valuesd3.zip, d3.transposed3.bind3.ticksd3.mean, d3.median, and friendsd3.quickselectd3.bisectd3.sumd3.group, d3.rollup, d3.indexd3.countd3.min, d3.max, d3.extentd3.least, d3.greatestd3.pairsd3.crossd3.ascending, d3.descendingd3.merged3.ranged3.permuted3.shuffled3-array 2.0
d3.mode
d3.mode([1, 2, 2, 2, 3, 3]) // 2
d3.mode(["5", 5, "5", "5", 5, 4, 4, 4, 4]) // 4
d3.mode(["5", 5, "5", "5", 5, 4, 4, 4, 4], Number) // 5
d3.mode(penguins, d => d.island)
{
let args; // the arguments to the last call of the accessor below: datum, index, data
d3.mode(penguins, (d, i, e) => { args = [d, i, e]; return d.species; });
return args;
}
d3.groupSort(penguins, v => v.length, d => d.island).pop()
d3.mode([1, undefined, undefined, NaN, NaN, NaN, null, null]) // 1
d3.groupSort([1, undefined, undefined, NaN, NaN, NaN, null, null], v => v.length, d => d).pop() // NaN
Purpose-built for displays of data
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