多條折線圖

雙折線圖，用於比對兩組數據的趨勢。

預覽圖

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設定值

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• 資料源

[{
  "month": "Jan",
  "city": "Tokyo",
  "temperature": 7
}, {
  "month": "Jan",
  "city": "London",
  "temperature": 3.9
}, {
  "month": "Feb",
  "city": "Tokyo",
  "temperature": 6.9
}, {
  "month": "Feb",
  "city": "London",
  "temperature": 4.2
}, {
  "month": "Mar",
  "city": "Tokyo",
  "temperature": 9.5
}, {
  "month": "Mar",
  "city": "London",
  "temperature": 5.7
}, {
  "month": "Apr",
  "city": "Tokyo",
  "temperature": 14.5
}, {
  "month": "Apr",
  "city": "London",
  "temperature": 8.5
}, {
  "month": "May",
  "city": "Tokyo",
  "temperature": 18.4
}, {
  "month": "May",
  "city": "London",
  "temperature": 11.9
}, {
  "month": "Jun",
  "city": "Tokyo",
  "temperature": 21.5
}, {
  "month": "Jun",
  "city": "London",
  "temperature": 15.2
}, {
  "month": "Jul",
  "city": "Tokyo",
  "temperature": 25.2
}, {
  "month": "Jul",
  "city": "London",
  "temperature": 17
}, {
  "month": "Aug",
  "city": "Tokyo",
  "temperature": 26.5
}, {
  "month": "Aug",
  "city": "London",
  "temperature": 16.6
}, {
  "month": "Sep",
  "city": "Tokyo",
  "temperature": 23.3
}, {
  "month": "Sep",
  "city": "London",
  "temperature": 14.2
}, {
  "month": "Oct",
  "city": "Tokyo",
  "temperature": 18.3
}, {
  "month": "Oct",
  "city": "London",
  "temperature": 10.3
}, {
  "month": "Nov",
  "city": "Tokyo",
  "temperature": 13.9
}, {
  "month": "Nov",
  "city": "London",
  "temperature": 6.6
}, {
  "month": "Dec",
  "city": "Tokyo",
  "temperature": 9.6
}, {
  "month": "Dec",
  "city": "London",
  "temperature": 4.8
}]

• 內距

40,20,50,50

• 比例尺 Scale

temperature 比例尺 （ X軸 ）

列表	設定值
欄位	temperature
類型	linear
優化數據範圍	開啟
最小值	0
格式化函數	function(val) { return val + '°C'; }

• 圖 Geom

點圖（ point ）

列表	設定值
欄位	month*temperature
類型	點圖
顏色欄位	city
形狀	circle
大小	4
樣式 - 顏色	#ffffff
樣式 - 寬度	1

線圖（ Line ）

列表	設定值
欄位	month*temperature
類型	線圖
顏色欄位	city