我正在研究Highcharts的股票图表，特别是数据分组。实际上一切正常，但我有一个关于分组最大单位的问题。
我的数据基于月，如果时间范围更大(即图表显示超过 10 年的数据(，我希望按年进行分组。 分组效果很好，但如果显示的数据范围变大，Highcharts继续进行数据检测并将2年或3年分组在一起。我只希望"团体规模"的最大数量为一年。
// create the chart
Highcharts.stockChart('container', {
chart: {
alignTicks: false
},
rangeSelector: {
//selected: 1
},
title: {
text: 'AAPL Stock Volume'
},
series: [{
type: 'column',
name: 'AAPL Stock Volume',
dataGrouping: {
groupPixelWidth: 45,
units: [[
'month',
[1]
], [
'year',[]
]]
},
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}]
});
https://jsfiddle.net/tmj3fLhv/
是否有可能阻止Highcharts将数据分组到一年以上？
是你的groupPixelWidth设置使这变得困难。它试图按像素量而不是时间分组。
因此，通过删除groupPixelWidth设置，并将单位设置为year, [1]，图表将按预期运行。
series: [{
dataGrouping: {
units: [
['month', [1,6]],
['year', [1]]
]
},
...
}]
工作示例：https://jsfiddle.net/ewolden/tmj3fLhv/13/
如果设置groupPixelWidth是因为希望列具有特定宽度，则应改用 pointWidth。