// 定义变量

NumericSeries sarValue; // 用于存储SAR指标的值

Numeric Lots = 1; // 交易手数，可根据需求修改

// 计算SAR指标

sarValue = SAR();

// 交易信号判断

// 当价格上穿SAR指标，平空仓并开多仓

If(MarketPosition == -1 And Close[1] <= sarValue[1] And Close > sarValue)

{

   BuyToCover(Lots, Open);

   Buy(Lots, Open);

}

// 当价格下穿SAR指标，平多仓并开空仓

Else If(MarketPosition == 1 And Close[1] >= sarValue[1] And Close < sarValue)

{

   Sell(Lots, Open);

   SellShort(Lots, Open);

}

// 如果没有持仓，当价格上穿SAR指标开多仓

Else If(MarketPosition == 0 And Close[1] <= sarValue[1] And Close > sarValue)

{

   Buy(Lots, Open);

}

// 如果没有持仓，当价格下穿SAR指标开空仓

Else If(MarketPosition == 0 And Close[1] >= sarValue[1] And Close < sarValue)

{

   SellShort(Lots, Open);

}