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合成4小时K线的函数(先抛砖引玉,稍后会给出 合成任意周期的代码)

Author: yilidalei, Created: 2017-01-20 19:17:27, Updated:

合成4小时K线的函数(先抛砖引玉,稍后会给出 合成任意周期的代码)


  • 代码:

    main 函数是测试代码,拿走使用的时候,可以删除 main 函数。测试的时候使用了 画线模板。
// K线周期合成
var cloneObj = function(obj){  // 深拷贝 对象函数
    var str, newobj = obj.constructor === Array ? [] : {};
    if(typeof obj !== 'object'){
        return;
    } else if(JSON){
        str = JSON.stringify(obj), //系列化对象
        newobj = JSON.parse(str); //还原
    } else {
        for(var i in obj){
            newobj[i] = typeof obj[i] === 'object' ? 
            cloneObj(obj[i]) : obj[i]; 
        }
    }
    return newobj;
};

function AssembleRecords(records){
    var AssRecords = records.slice(0); // 深拷贝
    var AfterAssRecords = [];
    // 整点时间 0 ,4 ,8 , 12 ,16, 20, 24(0)
    // 判断时间戳
    var objTime = new Date();
    for(var i = 0 ; i < AssRecords.length; i++){
        //Log(objTime.setTime(AssRecords[i].Time)); // ceshi
        objTime.setTime(AssRecords[i].Time);
        var hour = objTime.getHours();
        if(hour === 0 || hour === 4 || hour === 8 || hour === 12 || hour === 16 || hour === 20){
            for(j = 0; j < i ; j++){
                AssRecords.shift(); // 排除
            }
            break;
        }
    }
    var BarObj = {
        Time : 0,
        Open : 0,
        High : 0,
        Low : 0,
        Close : 0,
        Volume : 0,
    };
    for(var n = 0; n < AssRecords.length - 4 ; n+=4){
        /*
        {
        Time    :一个时间戳, 精确到毫秒,与Javascript的 new Date().getTime() 得到的结果格式一样
        Open    :开盘价
        High    :最高价
        Low :最低价
        Close   :收盘价
        Volume  :交易量
        }
        */
        BarObj.Time = AssRecords[n].Time;
        BarObj.Open = AssRecords[n].Open;
        //Log(records.length, n, AssRecords); // ceshi
        BarObj.High = Math.max(AssRecords[n].High, AssRecords[n + 1].High, AssRecords[n + 2].High, AssRecords[n + 3].High);
        BarObj.Low = Math.min(AssRecords[n].Low, AssRecords[n + 1].Low, AssRecords[n + 2].Low, AssRecords[n + 3].Low);
        BarObj.Close = AssRecords[n + 3].Close;
        BarObj.Volume = AssRecords[n + 3].Volume;
        AfterAssRecords.push(cloneObj(BarObj));
    }
    return AfterAssRecords;
}

function main(){
    var records = exchange.GetRecords();
    while(!records || records.length < 24){
        records = exchange.GetRecords();
    }
    records = AssembleRecords(records);
    $.PlotRecords(records, 'BTC');
}
  • 测试运行显示:

    img

    有兴趣的对比下数据准确性。


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louis 谢谢,赞!

snakeayu 太有用了,感谢