Hay muchas versiones del indicador de SuperTrend en el televisor. Encontré un algoritmo relativamente fácil de entender y lo trasplanté. Comparado con el indicador de SuperTrend cargado en el gráfico de TV del sistema de prueba de retroceso de la plataforma de comercio FMZ, encontré una ligera diferencia y no entendí la razón de las causas, estoy esperando la orientación de nuestros lectores. Primero mostraré mi comprensión como sigue.
// VIA: https://github.com/freqtrade/freqtrade-strategies/issues/30
function SuperTrend(r, period, multiplier) {
// atr
var atr = talib.ATR(r, period)
// baseUp , baseDown
var baseUp = []
var baseDown = []
for (var i = 0; i < r.length; i++) {
if (isNaN(atr[i])) {
baseUp.push(NaN)
baseDown.push(NaN)
continue
}
baseUp.push((r[i].High + r[i].Low) / 2 + multiplier * atr[i])
baseDown.push((r[i].High + r[i].Low) / 2 - multiplier * atr[i])
}
// fiUp , fiDown
var fiUp = []
var fiDown = []
var prevFiUp = 0
var prevFiDown = 0
for (var i = 0; i < r.length; i++) {
if (isNaN(baseUp[i])) {
fiUp.push(NaN)
} else {
fiUp.push(baseUp[i] < prevFiUp || r[i - 1].Close > prevFiUp ? baseUp[i] : prevFiUp)
prevFiUp = fiUp[i]
}
if (isNaN(baseDown[i])) {
fiDown.push(NaN)
} else {
fiDown.push(baseDown[i] > prevFiDown || r[i - 1].Close < prevFiDown ? baseDown[i] : prevFiDown)
prevFiDown = fiDown[i]
}
}
var st = []
var prevSt = NaN
for (var i = 0; i < r.length; i++) {
if (i < period) {
st.push(NaN)
continue
}
var nowSt = 0
if (((isNaN(prevSt) && isNaN(fiUp[i - 1])) || prevSt == fiUp[i - 1]) && r[i].Close <= fiUp[i]) {
nowSt = fiUp[i]
} else if (((isNaN(prevSt) && isNaN(fiUp[i - 1])) || prevSt == fiUp[i - 1]) && r[i].Close > fiUp[i]) {
nowSt = fiDown[i]
} else if (((isNaN(prevSt) && isNaN(fiDown[i - 1])) || prevSt == fiDown[i - 1]) && r[i].Close >= fiDown[i]) {
nowSt = fiDown[i]
} else if (((isNaN(prevSt) && isNaN(fiDown[i - 1])) || prevSt == fiDown[i - 1]) && r[i].Close < fiDown[i]) {
nowSt = fiUp[i]
}
st.push(nowSt)
prevSt = st[i]
}
var up = []
var down = []
for (var i = 0; i < r.length; i++) {
if (isNaN(st[i])) {
up.push(st[i])
down.push(st[i])
}
if (r[i].Close < st[i]) {
down.push(st[i])
up.push(NaN)
} else {
down.push(NaN)
up.push(st[i])
}
}
return [up, down]
}
// The main function for testing indicators is not a trading strategy
function main() {
while (1) {
var r = _C(exchange.GetRecords)
var st = SuperTrend(r, 10, 3)
$.PlotRecords(r, "K")
$.PlotLine("L", st[0][st[0].length - 2], r[r.length - 2].Time)
$.PlotLine("S", st[1][st[1].length - 2], r[r.length - 2].Time)
Sleep(2000)
}
}
Comparación del código de prueba con el backtest:
La parte de la lógica de negociación es relativamente simple, es decir, cuando la tendencia corta se convierte en una tendencia larga, se abren posiciones largas. Abre una posición corta cuando la tendencia larga se convierta en una tendencia corta.
Parámetros de la estrategia:
Estrategia de negociación de SuperTrend
/*backtest
start: 2019-08-01 00:00:00
end: 2020-03-11 00:00:00
period: 15m
basePeriod: 5m
exchanges: [{"eid":"Futures_OKCoin","currency":"BTC_USD"}]
*/
// Global variables
var OpenAmount = 0 // The number of open positions after opening
var KeepAmount = 0 // Reserved position
var IDLE = 0
var LONG = 1
var SHORT = 2
var COVERLONG = 3
var COVERSHORT = 4
var COVERLONG_PART = 5
var COVERSHORT_PART = 6
var OPENLONG = 7
var OPENSHORT = 8
var State = IDLE
// Trading logic part
function GetPosition(posType) {
var positions = _C(exchange.GetPosition)
/*
if(positions.length > 1){
throw "positions error:" + JSON.stringify(positions)
}
*/
var count = 0
for(var j = 0; j < positions.length; j++){
if(positions[j].ContractType == Symbol){
count++
}
}
if(count > 1){
throw "positions error:" + JSON.stringify(positions)
}
for (var i = 0; i < positions.length; i++) {
if (positions[i].ContractType == Symbol && positions[i].Type === posType) {
return [positions[i].Price, positions[i].Amount];
}
}
Sleep(TradeInterval);
return [0, 0]
}
function CancelPendingOrders() {
while (true) {
var orders = _C(exchange.GetOrders)
for (var i = 0; i < orders.length; i++) {
exchange.CancelOrder(orders[i].Id);
Sleep(TradeInterval);
}
if (orders.length === 0) {
break;
}
}
}
function Trade(Type, Price, Amount, CurrPos, OnePriceTick){ // Processing transactions
if(Type == OPENLONG || Type == OPENSHORT){ // Handling open positions
exchange.SetDirection(Type == OPENLONG ? "buy" : "sell")
var pfnOpen = Type == OPENLONG ? exchange.Buy : exchange.Sell
var idOpen = pfnOpen(Price, Amount, CurrPos, OnePriceTick, Type)
Sleep(TradeInterval)
if(idOpen) {
exchange.CancelOrder(idOpen)
} else {
CancelPendingOrders()
}
} else if(Type == COVERLONG || Type == COVERSHORT){ // Deal with closing positions
exchange.SetDirection(Type == COVERLONG ? "closebuy" : "closesell")
var pfnCover = Type == COVERLONG ? exchange.Sell : exchange.Buy
var idCover = pfnCover(Price, Amount, CurrPos, OnePriceTick, Type)
Sleep(TradeInterval)
if(idCover){
exchange.CancelOrder(idCover)
} else {
CancelPendingOrders()
}
} else {
throw "Type error:" + Type
}
}
function SuperTrend(r, period, multiplier) {
// atr
var atr = talib.ATR(r, period)
// baseUp , baseDown
var baseUp = []
var baseDown = []
for (var i = 0; i < r.length; i++) {
if (isNaN(atr[i])) {
baseUp.push(NaN)
baseDown.push(NaN)
continue
}
baseUp.push((r[i].High + r[i].Low) / 2 + multiplier * atr[i])
baseDown.push((r[i].High + r[i].Low) / 2 - multiplier * atr[i])
}
// fiUp , fiDown
var fiUp = []
var fiDown = []
var prevFiUp = 0
var prevFiDown = 0
for (var i = 0; i < r.length; i++) {
if (isNaN(baseUp[i])) {
fiUp.push(NaN)
} else {
fiUp.push(baseUp[i] < prevFiUp || r[i - 1].Close > prevFiUp ? baseUp[i] : prevFiUp)
prevFiUp = fiUp[i]
}
if (isNaN(baseDown[i])) {
fiDown.push(NaN)
} else {
fiDown.push(baseDown[i] > prevFiDown || r[i - 1].Close < prevFiDown ? baseDown[i] : prevFiDown)
prevFiDown = fiDown[i]
}
}
var st = []
var prevSt = NaN
for (var i = 0; i < r.length; i++) {
if (i < period) {
st.push(NaN)
continue
}
var nowSt = 0
if (((isNaN(prevSt) && isNaN(fiUp[i - 1])) || prevSt == fiUp[i - 1]) && r[i].Close <= fiUp[i]) {
nowSt = fiUp[i]
} else if (((isNaN(prevSt) && isNaN(fiUp[i - 1])) || prevSt == fiUp[i - 1]) && r[i].Close > fiUp[i]) {
nowSt = fiDown[i]
} else if (((isNaN(prevSt) && isNaN(fiDown[i - 1])) || prevSt == fiDown[i - 1]) && r[i].Close >= fiDown[i]) {
nowSt = fiDown[i]
} else if (((isNaN(prevSt) && isNaN(fiDown[i - 1])) || prevSt == fiDown[i - 1]) && r[i].Close < fiDown[i]) {
nowSt = fiUp[i]
}
st.push(nowSt)
prevSt = st[i]
}
var up = []
var down = []
for (var i = 0; i < r.length; i++) {
if (isNaN(st[i])) {
up.push(st[i])
down.push(st[i])
}
if (r[i].Close < st[i]) {
down.push(st[i])
up.push(NaN)
} else {
down.push(NaN)
up.push(st[i])
}
}
return [up, down]
}
var preTime = 0
function main() {
exchange.SetContractType(Symbol)
while (1) {
var r = _C(exchange.GetRecords)
var currBar = r[r.length - 1]
if (r.length < pd) {
Sleep(5000)
continue
}
var st = SuperTrend(r, pd, factor)
$.PlotRecords(r, "K")
$.PlotLine("L", st[0][st[0].length - 2], r[r.length - 2].Time)
$.PlotLine("S", st[1][st[1].length - 2], r[r.length - 2].Time)
if(!isNaN(st[0][st[0].length - 2]) && isNaN(st[0][st[0].length - 3])){
if (State == SHORT) {
State = COVERSHORT
} else if(State == IDLE) {
State = OPENLONG
}
}
if(!isNaN(st[1][st[1].length - 2]) && isNaN(st[1][st[1].length - 3])){
if (State == LONG) {
State = COVERLONG
} else if (State == IDLE) {
State = OPENSHORT
}
}
// 执行信号
var pos = null
var price = null
if(State == OPENLONG){ // Open long positions
pos = GetPosition(PD_LONG) // Check positions
// Determine whether the status is satisfied, if it is satisfied, modify the status
if(pos[1] >= Amount){ // Open positions exceed or equal to the open positions set by the parameters
Sleep(1000)
$.PlotFlag(currBar.Time, "Open long positions", 'OL') // mark
OpenAmount = pos[1] // Record the number of open positions
State = LONG // Mark as long
continue
}
price = currBar.Close - (currBar.Close % PriceTick) + PriceTick * 2 // Calculate the price
Trade(OPENLONG, price, Amount - pos[1], pos, PriceTick) // Placing Order function (Type, Price, Amount, CurrPos, PriceTick)
}
if(State == OPENSHORT){ // Open short position
pos = GetPosition(PD_SHORT) // Check positions
if(pos[1] >= Amount){
Sleep(1000)
$.PlotFlag(currBar.Time, "Open short position", 'OS')
OpenAmount = pos[1]
State = SHORT
continue
}
price = currBar.Close - (currBar.Close % PriceTick) - PriceTick * 2
Trade(OPENSHORT, price, Amount - pos[1], pos, PriceTick)
}
if(State == COVERLONG){ // Handling long positions
pos = GetPosition(PD_LONG) // Get position information
if(pos[1] == 0){ // Determine if the position is 0
$.PlotFlag(currBar.Time, "Close long position", '----CL') // mark
State = IDLE
continue
}
price = currBar.Close - (currBar.Close % PriceTick) - PriceTick * 2
Trade(COVERLONG, price, pos[1], pos, PriceTick)
}
if(State == COVERSHORT){ // Deal with long positions
pos = GetPosition(PD_SHORT)
if(pos[1] == 0){
$.PlotFlag(currBar.Time, "Close short position", '----CS')
State = IDLE
continue
}
price = currBar.Close - (currBar.Close % PriceTick) + PriceTick * 2
Trade(COVERSHORT, price, pos[1], pos, PriceTick)
}
if(State == COVERLONG_PART) { // Partially close long positions
pos = GetPosition(PD_LONG) // Get positions
if(pos[1] <= KeepAmount){ // The position is less than or equal to the holding amount, this time the closing action is completed
$.PlotFlag(currBar.Time, "Close long positions, keep:" + KeepAmount, '----CL') // mark
State = pos[1] == 0 ? IDLE : LONG // update status
continue
}
price = currBar.Close - (currBar.Close % PriceTick) - PriceTick * 2
Trade(COVERLONG, price, pos[1] - KeepAmount, pos, PriceTick)
}
if(State == COVERSHORT_PART){
pos = GetPosition(PD_SHORT)
if(pos[1] <= KeepAmount){
$.PlotFlag(currBar.Time, "Close short positions, keep:" + KeepAmount, '----CS')
State = pos[1] == 0 ? IDLE : SHORT
continue
}
price = currBar.Close - (currBar.Close % PriceTick) + PriceTick * 2
Trade(COVERSHORT, price, pos[1] - KeepAmount, pos, PriceTick)
}
LogStatus(_D())
Sleep(1000)
}
}
Dirección estratégica:https://www.fmz.com/strategy/201837
Configuración de parámetros, período de la línea K, referencia: homilía SuperTrend V.1
El período de la línea K se establece en 15 minutos, y el parámetro SuperTrend se establece en 45, 3. Pruebe el contrato trimestral de futuros de OKEX para el año más reciente y establezca un contrato para operar a la vez. Debido al ajuste para operar solo un contrato a la vez, la tasa de utilización de los fondos es muy baja y no necesita preocuparse por el valor Sharpe.