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使用画线类库画K线以及均线图表范例

Author: 扫地僧, Date: 2021-11-05 10:33:04
Tags: 画线工具JavaScript

/*backtest
start: 2021-08-07 00:00:00
end: 2021-11-04 00:00:00
period: 1d
basePeriod: 1h
exchanges: [{"eid":"Futures_CTP","currency":"FUTURES"}]
*/

var PreBarTime = 0
function PlotMA_Kline(records, param, isFirst){
    var ma = TA.MA(records, param)
    $.PlotRecords(records, "K")
    if(isFirst){
        for(var i = records.length - 1; i >= 0; i--){
            if(ma[i] !== null){
                $.PlotLine("ma", ma[i], records[i].Time)
            }
        }
        PreBarTime = records[records.length - 1].Time
    } else {
        if(PreBarTime !== records[records.length - 1].Time){
            $.PlotLine("ma", ma[ma.length - 2], records[records.length - 2].Time)
            PreBarTime = records[records.length - 1].Time
        }
        $.PlotLine("ma", ma[ma.length - 1], records[records.length - 1].Time)
    }


}

function main(){
    var maCyc = MaCyc
    var isFirst = true
    exchange.SetContractType('rb000')
    while(1){
        var records = exchange.GetRecords()
        if(records && records.length > maCyc){
            PlotMA_Kline(records, maCyc, isFirst)
            isFirst = false
        }
        Sleep(1000)
    }
}

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