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2. Прорывная полоса фиксированная стратегия остановки потерь

Прорывная полоса фиксированная стратегия остановки потерь

Автор:Чао Чжан, Дата: 2023-11-03 14:31:21
Тэги:

---

---

/*backtest
start: 2023-10-26 00:00:00
end: 2023-10-28 03:00:00
period: 10m
basePeriod: 1m
exchanges: [{"eid":"Futures_Binance","currency":"BTC_USDT"}]
*/

// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
//@version=4
//@author=Takazudo

strategy("Fixed price SL",
  overlay=true,
  default_qty_type=strategy.fixed,
  initial_capital=0,
  currency=currency.USD)

var COLOR_TRANSPARENT = color.new(#000000, 100)
var COLOR_ENTRY_BAND = color.new(#43A6F5, 30)

//============================================================================
// config
//============================================================================

// Money management
_g1 = 'Money management'
var config_riskPrice = input(100, minval=1, title="Risk price for each entry", group=_g1)
var config_depositCurrency = input(title="Deposit currency", type=input.string, defval="USD", options=["USD"], group=_g1)

// Entry strategy
_g2 = 'Entry strategy'
var config_entryBandBars = input(defval = 100, title = "Entry band bar count",  minval=1, group=_g2)

// Backtesting range
_g3 = 'Backtesting range'
fromYear  = input(defval = 2018, title = "From Year",  minval = 1970, group=_g3)
fromMonth = input(defval = 1,    title = "From Month", minval = 1, maxval = 12, group=_g3)
fromDay   = input(defval = 1,    title = "From Day",   minval = 1, maxval = 31, group=_g3)
toYear  = input(defval = 2020, title = "To Year",  minval = 1970, group=_g3)
toMonth = input(defval = 12,    title = "To Month", minval = 1, maxval = 12, group=_g3)
toDay   = input(defval = 31,    title = "To Day",   minval = 1, maxval = 31, group=_g3)

//============================================================================
// exchange caliculations
//============================================================================

// mico pip size caliculation
// ex1: AUDCAD -> 0.0001
// ex2: USDJPY -> 0.01
f_calcMicroPipSize() =>
    _base = syminfo.basecurrency
    _quote = syminfo.currency
    _result = 0.0001
    if _quote == 'JPY'
        _result := _result * 100
    if _base == 'BTC'
        _result := _result * 100
    _result

// convert price to pips
f_convertPriceToPips(_price) =>
    _microPipSize = f_calcMicroPipSize()
    _price / _microPipSize

// caliculate exchange rate between deposit and quote currency
f_calcDepositExchangeSymbolId() =>
    _result = ''
    _deposit = config_depositCurrency
    _quote = syminfo.currency
    if (_deposit == 'USD') and (_quote == 'USD')
        _result := na
    if (_deposit == 'USD') and (_quote == 'AUD')
        _result := 'OANDA:AUDUSD'
    if (_deposit == 'EUR') and (_quote == 'USD')
        _result := 'OANDA:EURUSD'
    if (_deposit == 'USD') and (_quote == 'GBP')
        _result := 'OANDA:GBPUSD'
    if (_deposit == 'USD') and (_quote == 'NZD')
        _result := 'OANDA:NZDUSD'
    if (_deposit == 'USD') and (_quote == 'CAD')
        _result := 'OANDA:USDCAD'
    if (_deposit == 'USD') and (_quote == 'CHF')
        _result := 'OANDA:USDCHF'
    if (_deposit == 'USD') and (_quote == 'JPY')
        _result := 'OANDA:USDJPY'
    _result

// Let's say we need CAD to USD exchange
// However there's only "OANDA:USDCAD" symbol.
// Then we need to invert the exhchange rate.
// this function tells us whether we should invert the rate or not
f_calcShouldInvert() =>
    _result = false
    _deposit = config_depositCurrency
    _quote = syminfo.currency
    if (_deposit == 'USD') and (_quote == 'CAD')
        _result := true
    if (_deposit == 'USD') and (_quote == 'CHF')
        _result := true
    if (_deposit == 'USD') and (_quote == 'JPY')
        _result := true
    _result

// caliculate how much quantity should I buy or sell
f_calcQuantitiesForEntry(_depositExchangeRate, _slPips) =>
    _microPipSize = f_calcMicroPipSize()
    _priceForEachPipAsDeposit = _microPipSize * _depositExchangeRate
    _losePriceOnSl = _priceForEachPipAsDeposit * _slPips
    floor(config_riskPrice / _losePriceOnSl)

//============================================================================
// Quantity caliculation
//============================================================================

depositExchangeSymbolId = f_calcDepositExchangeSymbolId()

// caliculate deposit exchange rate
rate = security(depositExchangeSymbolId, timeframe.period, hl2)
shouldInvert = f_calcShouldInvert()
depositExchangeRate = if config_depositCurrency == syminfo.currency
    // if USDUSD, no exchange of course
    1
else
    // else, USDCAD to CADUSD invert if we need
    shouldInvert ? (1 / rate) : rate

//============================================================================
// Range Edge caliculation
//============================================================================

f_calcEntryBand_high() =>
    _highest = max(open[3], close[3])
    for i = 4 to (config_entryBandBars - 1)
        _highest := max(_highest, open[i], close[i])
    _highest

f_calcEntryBand_low() =>
    _lowest = min(open[3], close[3])
    for i = 4 to (config_entryBandBars - 1)
        _lowest := min(_lowest, open[i], close[i])
    _lowest

entryBand_high = f_calcEntryBand_high()
entryBand_low = f_calcEntryBand_low()
entryBand_height = entryBand_high - entryBand_low

plot(entryBand_high, color=COLOR_ENTRY_BAND, linewidth=1)
plot(entryBand_low, color=COLOR_ENTRY_BAND, linewidth=1)

rangeBreakDetected_long = entryBand_high < close
rangeBreakDetected_short = entryBand_low > close

shouldMakeEntryLong = (strategy.position_size == 0) and rangeBreakDetected_long
shouldMakeEntryShort = (strategy.position_size == 0) and rangeBreakDetected_short

//============================================================================
// SL & Quantity
//============================================================================

var sl_long = hl2
var sl_short = hl2

entryQty = 0
slPips = 0.0

// just show info bubble
f_showEntryInfo(_isLong) =>
    _str =
      'SL pips: ' + tostring(slPips) + '\n' +
      'Qty: ' + tostring(entryQty)
    _bandHeight = entryBand_high - entryBand_low
    _y = _isLong ? (entryBand_low + _bandHeight * 1/4) : (entryBand_high - _bandHeight * 1/4)
    _style = _isLong ? label.style_label_up : label.style_label_down
    label.new(bar_index, _y, _str, size=size.large, style=_style)

if shouldMakeEntryLong
    sl_long := (entryBand_high + entryBand_low) / 2
    slPips := f_convertPriceToPips(close - sl_long)
    entryQty := f_calcQuantitiesForEntry(depositExchangeRate, slPips)
if shouldMakeEntryShort
    sl_short := (entryBand_high + entryBand_low) / 2
    slPips := f_convertPriceToPips(sl_short - close)
    entryQty := f_calcQuantitiesForEntry(depositExchangeRate, slPips)

// trailing SL
if strategy.position_size > 0
    sl_long := max(sl_long, entryBand_low)
if strategy.position_size < 0
    sl_short := min(sl_short, entryBand_high)

//============================================================================
// backtest duration
//============================================================================

// Calculate start/end date and time condition
startDate  = timestamp(fromYear, fromMonth, fromDay, 00, 00)
finishDate = timestamp(toYear,   toMonth,   toDay,   00, 00)

//============================================================================
// make entries
//============================================================================

if (true)
    if shouldMakeEntryLong
        strategy.entry(id="Long", long=true, stop=close, qty=entryQty)
        f_showEntryInfo(true)
    if shouldMakeEntryShort
        strategy.entry(id="Short", long=false, stop=close, qty=entryQty)
        f_showEntryInfo(false)

strategy.exit('Long-SL/TP', 'Long', stop=sl_long)
strategy.exit('Short-SL/TP', 'Short', stop=sl_short)

//============================================================================
// plot misc
//============================================================================

sl = strategy.position_size > 0 ? sl_long :
  strategy.position_size < 0 ? sl_short : na

plot(sl, color=color.red, style=plot.style_cross, linewidth=2, title="SL")

value_bgcolor = rangeBreakDetected_long ? color.green :
  rangeBreakDetected_short ? color.red : COLOR_TRANSPARENT

bgcolor(value_bgcolor, transp=95)

---

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