使用格式化的时间戳标签时,Chart.js折线图不显示

时间:2016-11-16 13:36:26

标签: javascript momentjs chart.js

我试图创建一个包含时间戳和值的200个点的折线图。我的理解是我需要将标签和数据分成2个不同的数组,以便与Chart.js 2.0(最新版本)一起使用。

完整代码:

var chartData = [],
    labelData = [],
    chartData2 = [];


_.each(historyData, function (row) {
    chartData.push({
        x: moment.unix(row[0]/1000).format('MMM DD HH:mm'), 
        y: row[1]
    });
    labelData.push(moment.unix(row[0]/1000).format('MMM DD HH:mm'));
    chartData2.push(row[1]);
});

console.log(chartData);
console.log(labelData);
console.log(chartData2);

new Chart(self.$splitChart, {
    type: 'line',
    data: {
        labels: labelData,
        datasets: [{
            label: 'EPC',
            data: chartData2,
            lineTension: 0,
            backgroundColor: 'rgba(55,166,119,.2)',
            borderColor: 'rgb(55,166,119)',
            pointRadius: 0,
            pointHitRadius: 10
        }]
    },
    options: {
        legend: {
            display: false
        },
        scales: {
            xAxes: [{
                type: 'linear',
                position: 'bottom'
            }]
        }
    }
});

示例labelData:

  

[" 11月13日13:42"," 11月13日14:02"," 11月13日14:22"," 11月13日14 :42"," 11月   13 15:02"," 11月13日15:22"," 11月13日15:42"," 11月13日16:02",&#34 11月13日   16:22"," 11月13日16:42"," 11月13日17:03"," 11月13日17:22"," 11月13日   17:42"," 11月13日18:02"," 11月13日18:22"," 11月13日18:42"," 11月13日   19:02"," Nov 13 19:22"," Nov 13 19:42"," Nov 13 20:02"," 11月13日   20:22"," 11月13日20:42"," 11月13日21:02"," 11月13日21:22"," 11月13日   21:42"," 11月13日22:02"," 11月13日22:22"]

示例chartData2:

  

[" 0.005236"," 0.005088"," 0.005067"," 0.005046"," 0.005189& #34 ;,   " 0.005164"," 0.005134"," 0.005373"," 0.005331"," 0.005371",   " 0.005480"," 0.005420"," 0.005520"," 0.004876"," 0.004822",   " 0.004770"," 0.004397"," 0.004346"," 0.004295"," 0.004302",   " 0.004259"," 0.004217"," 0.003969"," 0.003935"," 0.003897",   " 0.004048"," 0.004027"]

不幸的是,我没有获得一条线,x轴只是数字(不是格式化的时间戳或与时间戳的任何关系)。我已经尝试过确保数据是浮点数(不是字符串)。仍然没有。

1 个答案:

答案 0 :(得分:0)

发现问题是由xAxes选项中定义type: 'linear'引起的。删除它修复了问题,我的数据显示正常。