高图:如何在x轴上绘制日期字段?

时间:2018-12-13 12:12:48

标签: javascript highcharts

我想在一年中绘制一个Highcharts area chart地区范围(即国家/地区)的人口。
我有一个使用制表符分隔的数据,该数据带有架构(日期(毫米/日/年),国家/地区,人口):

12/29/2014  india   1853
12/29/2014  france  1953
01/05/2015  india   5087
01/05/2015  china   11672
01/05/2015  france  8493
01/12/2015  china   9516
01/26/2015  france  10856
01/26/2015  india   3078
01/26/2015  china   37202

我无法设置我的x轴日期范围,即x轴值从12/01/201401/31/2015

我在JSFiddle中看到了该示例,但该示例使我更加困惑:他们的数据没有任何日期值,但是他们能够绘制一年中的“美国”和“俄罗斯”弹头数量:

Highcharts.chart('container', {
    chart: {
        type: 'area'
    },
    title: {
        text: 'Randon Plot for demo'
    },
    subtitle: {
        text: 'Sources: '
    },
    xAxis: {
        type: 'datetime',
        allowDecimals: false,
        labels: {
            formatter: function () {
                return this.value; // clean, unformatted number for year
            }
        }
    },
    yAxis: {
        title: {
            text: 'Nuclear weapon states'
        },
        labels: {
            formatter: function () {
                return this.value / 1000 + 'k';
            }
        }
    },
    tooltip: {
        pointFormat: '{series.name} had stockpiled <b>{point.y:,.0f}</b><br/>warheads in {point.x}'
    },
    plotOptions: {
        area: {
            pointStart: 1940,
            marker: {
                enabled: false,
                symbol: 'circle',
                radius: 2,
                states: {
                    hover: {
                        enabled: true
                    }
                }
            }
        }
    },
    series: [{
        name: 'USA',
        data: [
            null, null, null, null, null, 6, 11, 32, 110, 235,
            369, 640, 1005, 1436, 2063, 3057, 4618, 6444, 9822, 15468,
            20434, 24126, 27387, 29459, 31056, 31982, 32040, 31233, 29224, 27342,
            26662, 26956, 27912, 28999, 28965, 27826, 25579, 25722, 24826, 24605,
            24304, 23464, 23708, 24099, 24357, 24237, 24401, 24344, 23586, 22380,
            21004, 17287, 14747, 13076, 12555, 12144, 11009, 10950, 10871, 10824,
            10577, 10527, 10475, 10421, 10358, 10295, 10104, 9914, 9620, 9326,
            5113, 5113, 4954, 4804, 4761, 4717, 4368, 4018
        ]
    }, {
        name: 'USSR/Russia',
        data: [null, null, null, null, null, null, null, null, null, null,
            5, 25, 50, 120, 150, 200, 426, 660, 869, 1060,
            1605, 2471, 3322, 4238, 5221, 6129, 7089, 8339, 9399, 10538,
            11643, 13092, 14478, 15915, 17385, 19055, 21205, 23044, 25393, 27935,
            30062, 32049, 33952, 35804, 37431, 39197, 45000, 43000, 41000, 39000,
            37000, 35000, 33000, 31000, 29000, 27000, 25000, 24000, 23000, 22000,
            21000, 20000, 19000, 18000, 18000, 17000, 16000, 15537, 14162, 12787,
            12600, 11400, 5500, 4512, 4502, 4502, 4500, 4500
        ]
    }]
});

如何将数据放入此示例中?

1 个答案:

答案 0 :(得分:0)

在您提供的示例中,pointStartformatter用于轴标签,这导致数据以相等的时间间隔(每年)分配。

对于您来说,在时间间隔不相等的情况下,您应该以毫秒为单位发送x值-Highcharts要求的格式。

var data1 = [{
    x: '12/29/2014',
    y: 1853
}, {
    x: '01/05/2015',
    y: 5087
}, {
    x: '01/26/2015',
    y: 3078
}];

data1.forEach(function(el, i) {
    data1[i].x = new Date(el.x).getTime();
});

实时演示:http://jsfiddle.net/BlackLabel/4sq517ak/