Inventors quantified the PINE language introductory tutorial

I'm going to put it down. 2 and 3.trail_offsetParameters: After performing the tracking stop loss stop loss action, the placement of the placement order is the distance from the highest price (when over) or the lowest price (when empty). 3 and 4.trail_pointsParameters: astrail_priceParameters are simply positions with the number of arguments.

It's not that easy to understand, it's okay! Let's understand learning through a strategy of retrospective scenarios, which is actually very simple.

/*backtest
start: 2022-09-23 00:00:00
end: 2022-09-23 08:00:00
period: 1m
basePeriod: 1m
exchanges: [{"eid":"Binance","currency":"ETH_USDT"}]
args: [["RunMode",1,358374],["ZPrecision",0,358374]]
*/

strategy("test", overlay = true)

varip a = na
varip highPrice = na
varip isTrade = false 
varip offset = 30

if not barstate.ishistory and not isTrade
    strategy.entry("test 1", strategy.long, 1)
    strategy.exit("exit 1", "test 1", 1, trail_price=close+offset, trail_offset=offset)
    a := close + offset
    runtime.log("每点价格为：", syminfo.mintick, "，当前close:", close)
    isTrade := true 

if close > a and not barstate.ishistory
    highPrice := na(highPrice) ? close : highPrice
    highPrice := close > highPrice ? close : highPrice

plot(a, "trail_price 触发线")    
plot(strategy.position_size>0 ? highPrice : na, "当前最高价")
plot(strategy.position_size>0 ? highPrice-syminfo.mintick*offset : na, "移动止损触发线")

Multi-headed entry immediately when the policy starts executing, and then immediately the next.strategy.exitThe exit order (specified as the stop loss trigger parameter) starts to execute the stop loss trigger logic when the price of the market moves higher than the trail_price trigger line, the stop loss trigger line (blue) starts to follow the dynamic adjustment of the highest price, the blue line is the location of the stop loss trigger position, and finally the price of the market moves lower than the blue line.

So we're using this function to optimize a supertrending strategy, and we're just going to specify a single entry order for the strategy.strategy.exitThis tracking stop-loss and stop-loss function can be added to the checklist.

if not barstate.ishistory and findOrderIdx("open") >= 0 and state == 1
    trail_price := strategy.position_size > 0 ? close + offset : close - offset
    strategy.exit("exit", "open", 1, trail_price=trail_price, trail_offset=offset)
    runtime.log("每点价格为：", syminfo.mintick, "，当前close:", close, "，trail_price：", trail_price)
    state := 2 
    tradeBarIndex := bar_index

The full code of the strategy:

/*backtest
start: 2022-05-01 00:00:00
end: 2022-09-27 00:00:00
period: 1d
basePeriod: 5m
exchanges: [{"eid":"Binance","currency":"ETH_USDT"}]
args: [["RunMode",1,358374],["ZPrecision",0,358374]]
*/

varip trail_price = na
varip offset = input(50, "offset")
varip tradeBarIndex = 0
// 0 : idle , 1 current_open , 2 current_close
varip state = 0  

findOrderIdx(idx) =>
    ret = -1 
    if strategy.opentrades == 0 
        ret
    else 
        for i = 0 to strategy.opentrades - 1 
            if strategy.opentrades.entry_id(i) == idx
                ret := i 
                break
        ret

if strategy.position_size == 0 
    trail_price := na 
    state := 0

[superTrendPrice, dir] = ta.supertrend(input(2, "atr系数"), input(20, "atr周期"))

if ((dir[1] < 0 and dir[2] > 0) or (superTrendPrice[1] > superTrendPrice[2])) and state == 0 and tradeBarIndex != bar_index
    strategy.entry("open", strategy.long, 1)
    state := 1
else if ((dir[1] > 0 and dir[2] < 0) or (superTrendPrice[1] < superTrendPrice[2])) and state == 0 and tradeBarIndex != bar_index
    strategy.entry("open", strategy.short, 1)
    state := 1


// 反向信号，全平
if strategy.position_size > 0 and dir[2] < 0 and dir[1] > 0
    strategy.cancel_all()
    strategy.close_all()
    runtime.log("趋势反转，多头全平")
else if strategy.position_size < 0 and dir[2] > 0 and dir[1] < 0
    strategy.cancel_all()
    strategy.close_all()
    runtime.log("趋势反转，空头全平")


if not barstate.ishistory and findOrderIdx("open") >= 0 and state == 1
    trail_price := strategy.position_size > 0 ? close + offset : close - offset
    strategy.exit("exit", "open", 1, trail_price=trail_price, trail_offset=offset)
    runtime.log("每点价格为：", syminfo.mintick, "，当前close:", close, "，trail_price：", trail_price)
    state := 2 
    tradeBarIndex := bar_index


plot(superTrendPrice, "superTrendPrice", color=dir>0 ? color.red : color.green, overlay=true)