动态时间序列C3js图表 [英] Dynamic timeseries C3js chart

问题描述

我是C3.js的新手，并尝试创建动态时间序列图表，请在小提琴中运行代码 http ：//jsfiddle.net/roytirthadeep/54v7r0ab/

I am new to C3.js and trying to create a dynamic timeseries chart, please run the code in fiddle http://jsfiddle.net/roytirthadeep/54v7r0ab/

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？

Q1. Is this the right way to achieve the desired behaivor in C3.js ?

Q2。如何实现这个 http://www.highcharts.com/stock/demo/dynamic-update highcharts的行为（从空白图表开始）

Q2. How to achieve this http://www.highcharts.com/stock/demo/dynamic-update behaivor of highcharts (starting from a blank chart)

我得到了一个解决方案并将其添加为答案。

I got a solution and added it as an answer.

推荐答案

有C3的流程api可以用更少的代码执行你所要求的，但令人讨厌（特别是在我写了大部分这个答案之后）它有一个它没有的错误如果隐藏选项卡，则删除点 - https://github.com/c3js/c3/issues/1097

There is C3's flow api which does what you ask with less code, but annoyingly (especially after I wrote most of this answer) it has a bug where it doesn't remove points if the tab is hidden - https://github.com/c3js/c3/issues/1097

var chart = c3.generate({
    data: {
        x: 'x',
        columns: [
            ['x', '2012-12-28', '2012-12-29', '2012-12-30', '2012-12-31'],
            ['data1', 100, 230, 300, 330],
            ['data2', 250, 190, 230, 200],
            ['data3', 120, 90, 130, 180],
        ]
    },
    axis: {
        x: {
            type: 'timeseries',
            tick: {
                format: '%m/%d',
            }
        }
    }
});

var date = new Date ("2013-01-01");
setInterval(function () {
    chart.flow({
        columns: [
            ['x', new Date (date)],
            ['data1', 200 + (Math.random() * 300)],
            ['data2', 200 + (Math.random() * 300)],
            ['data3', 200 + (Math.random() * 300)],
        ],
        duration: 750,
    });
    date.setDate(date.getDate() + 1);
}, 2000);

http://jsfiddle.net/54v7r0ab/7/

在修复该错误之前，我会回答你的答案，因为它没有' t表现出同样的问题。

Until that bug's fixed, I'd go with your answer as it doesn't exhibit the same problem.

编辑：可能的修复。使用flow api的 done 功能时，新数据会停止添加到隐藏选项卡中，从而避免出现堆积问题。但是，如果您不希望在不查看时不断添加数据，这只有用:-)，它不适用于实时图表。

Possible fix. When using the flow api's done function, new data stops getting added to hidden tabs which avoids the 'pile-up' issue. However this is only useful if you don't want data constantly added when you're not looking :-), it wouldn't be a solution for a real-time graph.

http://jsfiddle.net/54v7r0ab/10/

var date = new Date ("2013-01-01");
var pushNew = function () {
    chart.flow({
        columns: [
            ['x', new Date (date)],
            ['data1', 200 + (Math.random() * 300)],
            ['data2', 200 + (Math.random() * 300)],
            ['data3', 200 + (Math.random() * 300)],
        ],
        duration: 750,
        done: function () {
          date.setDate(date.getDate() + 1);
          window.setTimeout (pushNew, 1);
      }
    });
}
pushNew();

这篇关于动态时间序列C3js图表的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！