配列操作
var dataArray = [10, 20, 50, 40, 30, 600];

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dataArray.sort(d3.ascending))=>[10,20,30,40,50,600]

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dataArray.sort(d3.descending))=>[600,50,40,30,20,10]

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d3.min(dataArray)=>10

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d3.max(dataArray)=>600

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d3.extent(dataArray)=>[10,600]

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d3.sum(dataArray)=>750

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d3.mean(dataArray)=>125

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d3.median(dataArray)=>35

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d3.quantile(dataArray.sort(), 1)=>600
d3.quantile(dataArray.sort(), 0.5)=>35
d3.quantile(dataArray.sort(), 0.25)=>22.5

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d3.bisect(dataArray, 30)=>3
d3.bisectLeft(dataArray, 30)=>2
d3.bisectRight(dataArray, 30)=>3

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d3.shuffle(dataArray)=>[50,30,40,20,10,600]

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Sets
var dataSet = d3.set(dataArray)
{"_":{"10":true,"20":true,"30":true,"40":true,"50":true,"600":true}}

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dataSet.has(20)=>true
dataSet.has(120)=>false

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dataSet.add(199);
dataSet=>{"_":{"10":true,"20":true,"30":true,"40":true,"50":true,"199":true,"600":true}}

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dataSet.remove(600);
dataSet=>{"_":{"10":true,"20":true,"30":true,"40":true,"50":true,"199":true}}

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dataSet.values()=>["10","20","30","40","50","199"]

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連想配列操作
var dataObj={"x":10,"y":20,"z":30}

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d3.keys(dataObj)=>["x","y","z"]

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d3.values(dataObj)=>[10,20,30]

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d3.entries(dataObj)=>[{"key":"x","value":10},{"key":"y","value":20},{"key":"z","value":30}]

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Maps
var dataMap = d3.map(dataObj)
{"_":{"x":10,"y":20,"z":30}}

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dataMap.has("y")=>true
dataMap.has("q")=>false

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dataMap.get("y")=>20

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dataMap.set("a", 10);
dataMap=>{"_":{"x":10,"y":20,"z":30,"a":10}}

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dataMap.remove("z");
dataMap=>{"_":{"x":10,"y":20,"a":10}}

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dataMap.keys()=>["x","y","a"]

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dataMap.values()=>[10,20,10]

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dataMap.entries()=>[{"key":"x","value":10},{"key":"y","value":20},{"key":"a","value":10}]

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Array Operators
d3.range(10, 50, 5)=>[10,15,20,25,30,35,40,45]

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d3.permute(["a", "b", "c"], [1, 2, 0]) =>["b","c","a"]

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d3.zip(dataArray)=>[[50],[30],[40],[20],[10],[600]]

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