來自mysql數據的多線圖c3

Question

我有一個帶有日期，小時和參數值的mysql表。我想顯示一天中的小時圖作爲x軸和多行，每天一個。我已經將數據轉換爲json格式，我如何顯示多行，每天在c3.js中顯示一行？

json format: [ 
    {"hour":"00:00:00","day":"2017-04-18","kpi":"41.54"}, 
    {"hour":"01:00:00","day":"2017-04-18","kpi":"0.00"}, 
    {"hour":"02:00:00","day":"2017-04-18","kpi":"0.00"}, 
    {"hour":"03:00:00","day":"2017-04-18","kpi":"0.00"}, 
    {"hour":"04:00:00","day":"2017-04-18","kpi":"0.00"}, 
    {"hour":"05:00:00","day":"2017-04-18","kpi":"0.00"}, 
    {"hour":"06:00:00","day":"2017-04-18","kpi":"31.94"}, 
    {"hour":"07:00:00","day":"2017-04-18","kpi":"47.44"}, 
    {"hour":"08:00:00","day":"2017-04-18","kpi":"35.05"}, 
    {"hour":"09:00:00","day":"2017-04-18","kpi":"43.24"}, 
    {"hour":"10:00:00","day":"2017-04-18","kpi":"32.40"}, 
    {"hour":"11:00:00","day":"2017-04-18","kpi":"32.03"}, 
    {"hour":"12:00:00","day":"2017-04-18","kpi":"37.22"}, 
    {"hour":"13:00:00","day":"2017-04-18","kpi":"30.85"}, 
    ... 
    {"hour":"00:00:00","day":"2017-04-19","kpi":"44.88"}, 
    {"hour":"01:00:00","day":"2017-04-19","kpi":"0.00"}, 
    {"hour":"02:00:00","day":"2017-04-19","kpi":"0.00"}, 
    {"hour":"03:00:00","day":"2017-04-19","kpi":"0.00"}, 
    {"hour":"04:00:00","day":"2017-04-19","kpi":"0.00"}, 
    {"hour":"05:00:00","day":"2017-04-19","kpi":"0.00"}, 
    {"hour":"06:00:00","day":"2017-04-19","kpi":"38.75"}, 
    {"hour":"07:00:00","day":"2017-04-19","kpi":"40.03"}, 
    {"hour":"08:00:00","day":"2017-04-19","kpi":"37.36"} 
] 

Answer 1

望着Timeseries example，你可以做一個圖表，顯示了一天的時間：

var xHours = ['myXValues', "00:00", "01:00", "02:00", "03:00", "04:00", "05:00", "06:00", "07:00", "08:00", "09:00", "10:00", "11:00", "12:00", "13:00", "14:00", "15:00", "16:00", "17:00", "18:00", "19:00", "20:00", "21:00", "22:00", "23:00"], 
    timeFormat = '%H:%M'; 

var chart = c3.generate({ 
    bindto: '#chart', 
    data: { 
     x: 'myXValues', 
     xFormat: timeFormat, 
     columns: [ 
      //xHours, 
      //['test', 30, 20, 10, 40, 15, 25], 
     ], 
    }, 
    axis: { 
     x: { type: 'timeseries' } 
    } 
}); 

然後，你需要拆分長JSON數組：每一天，創建一個包含數組該日期的值爲kpi。

最後，將每個較小的陣列加載到圖表中（chart.load()）。

添加評論的示例：https://codepen.io/Sphinxxxx/pen/BRLPwP?editors=0010