PSAR
Topic: PSAR
//+------------------------------------------------------------------+
//| EA-PSAR_v1-0.mq4 |
//| Luca Spinello |
//|
//+------------------------------------------------------------------+
#property copyright "Luca Spinello - mql4tradingautomation.com"
#property version "1.00"
#property strict
#property description "This Expert Advisor opens orders when the PSAR changes from above to below the price or vice versa"
#property description " "
#property description "DISCLAIMER: This code comes with no guarantee, you can use it at your own risk"
#property description "We recommend to test it first on a Demo Account"
/*
ENTRY BUY: PSAR changes from above the previous bar to below the current bar
ENTRY SELL: PSAR changes from below the previous bar to above the current bar
EXIT: Take profit or trailing stop using PSAR
*/
extern double LotSize=0.1; //Position size
extern double StopLoss=20; //Stop loss in pips
extern double TakeProfit=500; //Take profit in pips
extern int Slippage=2; //Slippage in pips
extern bool TradeEnabled=true; //Enable trade
extern double PSARStep=0.2; //PSAR Step
extern double PSARMaxStep=0.02; //PSAR Max Step
extern int MagicNumber=11223344; //Magic Number to assign to the orders
//Functional variables
double ePoint; //Point normalized
bool CanOrder; //Check for risk management
bool CanOpenBuy; //Flag if there are buy orders open
bool CanOpenSell; //Flag if there are sell orders open
int OrderOpRetry=10; //Number of attempts to perform a trade operation
int SleepSecs=3; //Seconds to sleep if can't order
int MinBars=60; //Minimum bars in the graph to enable trading
//Functional variables to determine prices
double MinSL;
double MaxSL;
double TP;
double SL;
double Spread;
int Slip;
//Variable initialization function
void Initialize(){
RefreshRates();
ePoint=Point;
Slip=Slippage;
if (MathMod(Digits,2)==1){
ePoint*=10;
Slip*=10;
}
TP=TakeProfit*ePoint;
SL=StopLoss*ePoint;
CanOrder=TradeEnabled;
CanOpenBuy=true;
CanOpenSell=true;
}
//Check if orders can be submitted
void CheckCanOrder(){
if( Bars<MinBars ){
Print("INFO - Not enough Bars to trade");
CanOrder=false;
}
OrdersOpen();
return;
}
//Check if there are open orders and what type
void OrdersOpen(){
for( int i = 0 ; i < OrdersTotal() ; i++ ) {
if( OrderSelect( i, SELECT_BY_POS, MODE_TRADES ) == false ) {
Print("ERROR - Unable to select the order - ",GetLastError());
break;
}
if( OrderSymbol()==Symbol() && OrderType() == OP_BUY) CanOpenBuy=false;
if( OrderSymbol()==Symbol() && OrderType() == OP_SELL) CanOpenSell=false;
}
return;
}
//Close all the orders of a specific type and current symbol
void CloseAll(int Command){
double ClosePrice=0;
for( int i = 0 ; i < OrdersTotal() ; i++ ) {
if( OrderSelect( i, SELECT_BY_POS, MODE_TRADES ) == false ) {
Print("ERROR - Unable to select the order - ",GetLastError());
break;
}
if( OrderSymbol()==Symbol() && OrderType()==Command) {
if(Command==OP_BUY) ClosePrice=Bid;
if(Command==OP_SELL) ClosePrice=Ask;
double Lots=OrderLots();
int Ticket=OrderTicket();
for(int j=1; j<OrderOpRetry; j++){
bool res=OrderClose(Ticket,Lots,ClosePrice,Slip,Red);
if(res){
Print("TRADE - CLOSE - Order ",Ticket," closed at price ",ClosePrice);
break;
}
else Print("ERROR - CLOSE - error closing order ",Ticket," return error: ",GetLastError());
}
}
}
return;
}
//Open new order of a given type
void OpenNew(int Command){
RefreshRates();
double OpenPrice=0;
double SLPrice;
double TPPrice;
if(Command==OP_BUY){
OpenPrice=Ask;
SLPrice=OpenPrice-SL;
TPPrice=OpenPrice+TP;
}
if(Command==OP_SELL){
OpenPrice=Bid;
SLPrice=OpenPrice+SL;
TPPrice=OpenPrice-TP;
}
for(int i=1; i<OrderOpRetry; i++){
int res=OrderSend(Symbol(),Command,LotSize,OpenPrice,Slip,NormalizeDouble(SLPrice,Digits),NormalizeDouble(TPPrice,Digits),"",MagicNumber,0,Green);
if(res){
Print("TRADE - NEW - Order ",res," submitted: Command ",Command," Volume ",LotSize," Open ",OpenPrice," Slippage ",Slip," Stop ",SLPrice," Take ",TPPrice);
break;
}
else Print("ERROR - NEW - error sending order, return error: ",GetLastError());
}
return;
}
//Technical analysis of the indicators
bool CrossToOpenBuy=false;
bool CrossToOpenSell=false;
void CheckPSARCross(){
CrossToOpenBuy=false;
CrossToOpenSell=false;
double PSARCurr=iSAR(Symbol(),0,PSARStep,PSARMaxStep,0);
double PSARPrev=iSAR(Symbol(),0,PSARStep,PSARMaxStep,1);
if(PSARCurr<Close[0] && PSARPrev>Close[1]){
CrossToOpenBuy=true;
}
if(PSARCurr>Close[0] && PSARPrev<Close[1]){
CrossToOpenSell=true;
}
}
//Trailing Stop with PSAR
void UpdatePositions(){
//Scan the open orders backwards
for(int i=OrdersTotal()-1; i>=0; i--){
//Select the order, if not selected print the error and continue with the next index
if( OrderSelect( i, SELECT_BY_POS, MODE_TRADES ) == false ) {
Print("ERROR - Unable to select the order - ",GetLastError());
continue;
}
//Check if the order can be modified matching the criteria, if criteria not matched skip to the next
if(OrderSymbol()!=Symbol()) continue;
if(OrderMagicNumber()!=MagicNumber) continue;
//Prepare the prices
double TakeProfitPrice=OrderTakeProfit();
double StopLossPrice=OrderStopLoss();
double OpenPrice=OrderOpenPrice();
double NewStopLossPrice=StopLossPrice;
double NewTakeProfitPrice=TakeProfitPrice;
//PSAR Value of the current symbol, current time frame , PSARStep, PSARMaxStep, previous candle
double PSARPrice=iSAR(Symbol(),0,PSARStep,PSARMaxStep,1);
//Get updated prices and calculate the new Stop Loss and Take Profit levels, these depends on the type of order
RefreshRates();
if(OrderType()==OP_BUY){
if(PSARPrice>StopLossPrice && PSARPrice<Close[1] && PSARPrice<TakeProfitPrice){
NewStopLossPrice=NormalizeDouble(PSARPrice,Digits);
}
}
if(OrderType()==OP_SELL){
if(PSARPrice<StopLossPrice && PSARPrice>Close[1] && PSARPrice>TakeProfitPrice){
NewStopLossPrice=NormalizeDouble(PSARPrice,Digits);
}
}
//If the new Stop Loss and Take Profit Levels are different from the previous then I try to update the order
if(NewStopLossPrice!=StopLossPrice){
Print("Modifying order ",OrderTicket()," Open Price ",OpenPrice," New Stop Loss ",NewStopLossPrice," New Take Profit ",NewTakeProfitPrice);
if(OrderModify(OrderTicket(),OpenPrice,NewStopLossPrice,NewTakeProfitPrice,0,Yellow)){
Print("Order modified");
}
else{
Print("Order failed to update with error - ",GetLastError());
}
}
}
}
//+------------------------------------------------------------------+
//| Expert initialization function |
//+------------------------------------------------------------------+
int OnInit()
{
//---
//---
return(INIT_SUCCEEDED);
}
//+------------------------------------------------------------------+
//| Expert deinitialization function |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
{
//---
}
//+------------------------------------------------------------------+
//| Expert tick function |
//+------------------------------------------------------------------+
void OnTick()
{
//---
//Calling initialization, checks and technical analysis
Initialize();
CheckCanOrder();
UpdatePositions();
CheckPSARCross();
//Check of Entry/Exit signal with operations to perform
if(CrossToOpenBuy){
CloseAll(OP_SELL);
if(CanOpenBuy && CanOrder) OpenNew(OP_BUY);
}
if(CrossToOpenSell){
CloseAll(OP_BUY);
if(CanOpenSell && CanOrder) OpenNew(OP_SELL);
}
}
//+------------------------------------------------------------------+