Any questions from newcomers on MQL4 and MQL5, help and discussion on algorithms and codes - page 574

[Alekseu Fedotov]

Galim_V:

The task is to find the bar with the minimum closure

for(int x=0; x<=xBars -1; x++)

{

counter++;

// Print(Close[x],",",counter);

int h = ArrayMinimum(Close[x]);

if(counter > 20) break;

}

Compiler swears at Close

Write the closing prices in a separate array and then outside the ArrauMinimum chick

[Galim_V]

Alekseu Fedotov:
Write the closing prices in a separate array and then outside the ArrauMinimum chick

Thank you!

[Taras Slobodyanik]

Galim_V:

The task is to find the bar with the minimum close

there are iHighest and iLowest functions (now also in MT5)

[Galim_V]

Taras Slobodyanik:

there are iHighest and iLowest functions (now also in MT5)

Thank you!

[Ihor Herasko]

Galim_V:

The task is to find the bar with the minimum closure

for(int x=0; x<=xBars -1; x++)

{

counter++;

// Print(Close[x],",",counter);

int h = ArrayMinimum(Close[x]);

if(counter > 20) break;

}

The compiler swears at Close

The task of searching for the minimum/maximum price in MQL4 is solved by one line:

double fMinClose = iClose(NULL, 0, iLowest(NULL, 0, MODE_CLOSE, <сколько баров>, <начинать с бара>));

[PolarSeaman]

Taras Slobodyanik:

you can, but it won't be exactly a timer.

Thank you.

How do I calculate the lot volume in increments? If deposit =1000, lot = 0.1, deposit became 2000 lot = 0.2. That is, if the deposit is 1500 or 1700, the lot is not incremented.

[Konstantin Nikitin]

PolarSeaman:

Thank you.

How do I calculate the lot volume in increments? If deposit =1000, lot = 0.1, deposit became 2000 lot = 0.2. That is, if the deposit is 1500 or 1700, the lot does not increase.

double percentLot = 0.01,
       lot = NormalizeDouble(MathFloor(AccountInfoDouble(ACCOUNT_BALANCE)*percentLot/10)/10, 1);

Somehow...

[PolarSeaman]

Konstantin Nikitin:

Like this...

No, no, with a deposit of 1100, the lot will be 0.11, and I need the lot not to increase up to 2000. How do I set the step =1000 in the settings?

[nikolyafhfgjgfj]

Good afternoon, could you please tell me if it is possible to add coordinates to the indexer to the mouse if you can, please email me at [e-mail]

[Vladimir Liubchenko]

Hello programmers. Could you give me a hint on how to correctly approach the following condition:

1. The Expert Advisor opens 2 market orders (buy and sell) with the same lot specified in the settings. - The order is executed without any problems

The next one presents a problem, the price can move both to the SELL direction and to the BUY direction. How can we arrange the code so that when n points have been passed, the Expert Advisor would scan the profitability of those two deals in LIVE and close the order which has a negative balance after n points? If you have any other ideas how to do this, please advise.

I give you the code - draft, only the first point is executed, and 2 trades are opened with TP and SL

2. When the price reaches the specified amount of points, then I close order with a minus balance and open 2 more orders (buy and sell) with the same lot,

Stops are set at the opening price of the first order, i.e. if the trend reverses, all 3 orders should close simultaneously.

extern int    _ms = 1000;  
extern double _lots = 0.01;
extern double _TP = 80;
extern double _SL = 35;

int _mn;
double pt;
//+------------------------------------------------------------------+
//| Expert initialization function                                   |
//+------------------------------------------------------------------+
int OnInit()
  { 
   pt = Point;
   if (Digits==3||Digits==5) {pt*=10;} else pt = Point;
   _mn = MagicNumberGenerator(_ms);
   Print("The magic number is ",_mn);
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Expert deinitialization function                                 |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
  {

  }
//+------------------------------------------------------------------+
//| Expert tick function                                             |
//+------------------------------------------------------------------+
void OnTick()
  {
    if (IsNewCandle())
    {
      if (TotalOpenOrders(_mn)==0)
      {
        EnterTrade(OP_BUY);
        EnterTrade(OP_SELL);
      }
    }   
  }
//+------------------------------------------------------------------+
//+------------------------------------------------------------------+
//|   Открытие первых позиций                                        |
//+------------------------------------------------------------------+
void EnterTrade(int type)
{
   double price = 0; double sl = 0; double tp = 0; double lot = _lots;
   
   if      (type == OP_BUY)  price = Ask;
   else if (type == OP_SELL) price = Bid;
   
   int err = 0;
   int ticket = OrderSend(_Symbol, type, lot, price, 30, 0, 0, NULL, _mn, 0, clrGreen);
   if (ticket == -1)
   {
     err = GetLastError();
     Print("Could not place the order due to error ",err," ",ErrorDescription(err));
     if (err == ERR_TRADE_NOT_ALLOWED) Alert("You need to enable you autotrade button");
   }
   else 
   {
     if(!OrderSelect(ticket,SELECT_BY_TICKET))
     {
       err = GetLastError();
       Print("Could not select the order due to error ",err," ",ErrorDescription(err));
     }
     else 
     {
       if (OrderType()==OP_SELL)
       {
         sl = OrderOpenPrice()+(_SL*pt);
         if (_SL==0) sl = 0; 
         tp = OrderOpenPrice()-(_TP*pt);
       }  
       else if (OrderType()==OP_BUY)
       {
         sl = OrderOpenPrice()-(_SL*pt);
         if (_SL==0) sl = 0; 
         tp = OrderOpenPrice()+(_TP*pt);
       }
       if(!OrderModify(ticket, OrderOpenPrice(), sl, tp, 0, clrNONE))
       err = GetLastError();
       Print("Could not modify the order due to error ",err," ",ErrorDescription(err));
     }
   }
}