Chartjs 时间图 xAxis 显示 1970 年

Question

我正在尝试绘制一系列测量值（按时间戳索引）。当我尝试绘制示例日期时，xaxis 的范围从 1970 年到 2018 年，尽管数据仅存在于 2018-12 年。

什么设置正确缩放 xaxis？

document.addEventListener("DOMContentLoaded", function(event) {
    var ctx = document.getElementById("plot").getContext('2d');
    var myChart = new Chart(ctx, {
        type: 'line',
        data: {
            labels: ["Value"],
            datasets: [{
                'label': 'Value',
                'data': [
                    {t: '2018-12-01T12:00:00', y: 100},
                    {t: '2018-12-02T12:00:00', y: 90},
                    {t: '2018-12-03T12:00:00', y: 85},
                    {t: '2018-12-04T12:00:00', y: 86},
                    {t: '2018-12-05T12:00:00', y: 77},
                    {t: '2018-12-06T12:00:00', y: 73},
                    {t: '2018-12-07T12:00:00', y: 72},
                    {t: '2018-12-08T12:00:00', y: 70},
                    {t: '2018-12-15T12:00:00', y: 71},
                    {t: '2018-12-16T12:00:00', y: 72},
                    {t: '2018-12-17T12:00:00', y: 69},
                    ],
                'fill': false,
            }],
        },
        options: {
            responsive: true,
            title: {
                display: true,
                text: 'foobar',
            },
            scales: {
                xAxes: [{
                    type: 'time',
                    display: true,
                    time: {
                        parser: "YYYY-MM-DDTHH:mm:ss",
                    },
                }]
            },
        },
    });
});

Answer 1

type: 'time',
display: true,
time: {
    parser: "YYYY-MM-DDTHH:mm:ss",
},

您可以根据ChartJS添加比例 > xAxes > 时间并且您还可以使用MomentJS添加时间格式

type: 'time',
display: true,
distribution: 'series',
time: {
    unit:"year",
    displayFormats:{year:'YYYY'},
    min:'1970' ,
    max:'2018',
}