javascript - 动态时间序列 C3js 图表

Question

我是 C3.js 的新手，正在尝试创建动态时间序列图表，请运行 fiddle http://jsfiddle.net/roytirthadeep/54v7r0ab/ 中的代码

var chart = c3.generate({
        data: { 
            x: 'x',
            xFormat: '%Y-%m-%dT%H:%M:%S',
            columns: []
        },
         axis: {
            x: {
                type: 'timeseries',
                tick: {
                    format: '%H:%M:%S',
                }
            }
        },
        legend: {
            position: 'right'
        }
    });

    //"2013-01-01T00:00:01"
    var timeInc = 1;
    var value = 1;
    var interval = setInterval(function () {
        value = value + 1;
        timeInc++;
        var str;
        if (timeInc > 59) {
            clearInterval(interval);
            return;
        }
        if (timeInc >= 10) {
            str = ''+timeInc;
        } else {
            str = '0'+timeInc;
        }    
        xValue = "2013-01-01T00:00:"+str;
        if (value)
        if (value < 7) {
         console.log("xValue",xValue);
        console.log("value",value);
          chart.flow({
              columns: [
                ['x', xValue],
                ['data3', value]
              ],
              length:0
          });
        } else {
            chart.flow({
              columns: [
                ['x', xValue],
                ['data3', value],
                ['data4', value*2],
                ['data5', value/2],
                ['data6', value-1]  
              ],
              length:0
          });
        }    
    }, 1000);

Q1。这是在 C3.js 中实现所需行为的正确方法吗？

Q2。如何做到这一点 http://www.highcharts.com/stock/demo/dynamic-update highcharts 的行为(从空白图表开始)

我得到了一个解决方案并将其添加为答案。

Answer 1

我找到了一个解决方案来实现像 Highcharts 这样的预期行为，方法是重置 x 轴范围并检查阈值。 这可能对其他人有帮助 http://jsfiddle.net/54v7r0ab/5/

var chart = c3.generate({
    data: { 
        x: 'x',
        columns: []
    },
     axis: {
        x: {
            type: 'timeseries',
            tick: {
                format: '%H:%M:%S',
            }
        }
    },
    legend: {
        position: 'right'
    }
});
var chartObj = {
   "chart": chart,
   "redrawArgs": {},
   "truncThreshold": undefined
}

//"2013-01-01T00:00:01"
var date = 1463017666000;
var timeInc = 1000;
var value = 1;
var interval = setInterval(function () {
        var dataCols = [];
    date = date + timeInc;
    var minX = date - 10000;
    var maxX = date;
    var redrawArgs = chartObj.redrawArgs;
    if (!chartObj.truncThreshold) {
        chartObj.truncThreshold = maxX;
    } else if (minX > chartObj.truncThreshold) {
        redrawArgs.length = 1;
    } else {
        redrawArgs.length = 0;
    }
    chartObj.chart.axis.range({max: {x: maxX}, min: {x: minX}});
    value++;
    redrawArgs.duration = 0;
    if (value < 7) {
      dataCols.push(['x', date]);
      dataCols.push(['data 1', value]);
      redrawArgs.columns = dataCols;      
    } else {
        dataCols.push(['x', date]);
      dataCols.push(['data 1', value]);
      dataCols.push(['data 2', value*Math.random()])
      dataCols.push(['data 3', value/Math.random()]);
      dataCols.push(['data 4', value+Math.random()]);
      redrawArgs.columns = dataCols;
    }
    chartObj.chart.flow(redrawArgs);
}, 1000);