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EA Math Logic-Help

  • #1
  • First Post: Apr 5, 2012 9:59am Apr 5, 2012 9:59am
Hello, I am making an EA to open Cable order, the order is open 1.5200, 1.5400, 1.5600, 1.5800, 1.6000, 1.6200.... which this 200 interval divided by 5,

at 1.5200 will be (1.5240, 1.5280, 1.5320, 1.5360, 1.5400)
at 1.5400 will be (1.5440, 1.5480, 1.5520, 1.5560, 1.5600)
and...........................

so when i attach EA, the ea will choose nearest upper and lower interval to open order

For example, when I attach the Ea to the chart, the current price is 1.5460,
So the upper interval is 1.5480
the lower interval is 1.5440, when the price reach 1 of this, the ea will open order,

so anyone could suggest me how to write the logic code pls?
  • #2
  • Apr 5, 2012 7:33pm Apr 5, 2012 7:33pm
Mhh this is too coplicated I suppose. But it will work.


Quote
double Upperlimit[..];

double Current = Close[0];


Upperlimit[0] = MathCeil(Current*1000)/1000;

for (int i =1; ...; i++)
{
Upperlimit[i] = Upperlimit[0] + i * Pips;
ObjectCreate(,HLINE...)

}


if(Close[0] >= Upperlimit[i]) OrderSend(...)

Take a look at MathCeil and MathFloor
  • #3
  • Apr 6, 2012 2:52am Apr 6, 2012 2:52am
Thank you,
let's say current price is 1.5432, may I know how to display last 2nd digit which is "3"?
  • #4
  • Apr 6, 2012 7:14am Apr 6, 2012 7:14am
Quoting klhh
Thank you,
let's say current price is 1.5432, may I know how to display last 2nd digit which is "3"?
This is bit messy but it works.
Inserted Code
 
//convert price to string and add 0
string price =DoubleToStr(1.5432,3)+0;
//convert string to double
double newprice =StrToDouble(price);
  • #5
  • Edited 8:00am Apr 6, 2012 7:48am | Edited 8:00am
Quoting klhh
Thank you,
let's say current price is 1.5432, may I know how to display last 2nd digit which is "3"?
Try this:

Inserted Code
     
 
      double grid[6];
 
      double distance = 0.004;
      double price=NormalizeDouble(Bid,2); // Current price rounded to 2 digits
 
      grid[0]=price;
 
      for(i=1;i<6;i++)
         grid[i]=price+distance*i;

For instance, if Bid is 1.55123 grid[]={1.55, 1.554, 1.558, 1.562, 1.566, 1.56}
And you can use that prices to open pending orders for example.
  • #6
  • Apr 6, 2012 8:35am Apr 6, 2012 8:35am
I have coded an EA that may work, it opens 2 orders at time at those prices, test it:

Inserted Code
 
extern double TP = 0.003;
extern double SL = 0.003;
//+------------------------------------------------------------------+
//| expert initialization function                                   |
//+------------------------------------------------------------------+
int init()
  {
//----
 
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| expert deinitialization function                                 |
//+------------------------------------------------------------------+
int start()  {
   static int tiket_buy, tiket_sell;
   double price_sell, price_buy, SL_sell, SL_buy, TP_sell, TP_buy, vol, distance, price;
   int error, i;
   double grid[6];
   static bool sell=false, buy=false;
 
      distance = 0.004;
      price=NormalizeDouble(Bid,2); // Current price rounded
 
      grid[0]=price;
 
      for(i=1;i<6;i++)
         grid[i]=price+distance*i;
 
   OrderSelect(tiket_sell, SELECT_BY_TICKET);
         if(OrderCloseTime()!=0)
            sell=false;
 
   OrderSelect(tiket_buy, SELECT_BY_TICKET);
         if(OrderCloseTime()!=0)
            buy=false;
 
   if(buy==false&&sell==true)
   {
      OrderDelete(tiket_sell);
      sell=false;
   }
 
   if(buy==true&&sell==false)
   {
      OrderDelete(tiket_buy);
      buy=false;
   }
 
  for(i=0;i<6;i++)
  {
      RefreshRates();
 
      vol = NormalizeDouble(AccountBalance()/10000,1);
      if(vol==0)
         vol=0.1;
 
      if(Ask>grid[i]&&buy==false)
      {
         price_buy=grid[i];
         SL_buy= NormalizeDouble(price_buy-SL,Digits);
         TP_buy= NormalizeDouble(price_buy+TP,Digits);
         tiket_buy = OrderSend(Symbol(),OP_BUYLIMIT,vol, price_buy ,50,SL_buy, TP_buy,"BUYLIMIT",20000,0,Green);
         buy=true;
      }
 
      if(Bid<grid[i]&&sell==false)
      {
         price_sell=grid[i];
         SL_sell= NormalizeDouble(price_sell+SL,Digits);
         TP_sell= NormalizeDouble(price_sell-TP,Digits);
         tiket_sell = OrderSend(Symbol(),OP_SELLLIMIT,vol,price_sell,50,SL_sell,TP_sell,"SELLLIMIT",10000,0,Red);
         sell=true;
      }
 
      if (tiket_sell<0)
      {
        error=GetLastError();
        Print("SELL order Error: "+error+" Bid="+Bid+"  Price:", price_sell, " SL: ", SL_sell, " TP: ", TP_sell);     
      }
 
      if (tiket_buy<0)
      {
        error=GetLastError();
        Print("BUY order Error: "+error+" Ask="+Ask+"  Price:", price_buy, " SL: ", SL_buy, " TP: ", TP_buy);
      }
 
  }
   return(0);
}


Tested it gives some "0" errors, don't know why
Maybe someone could modify it to fix it, I don't know what is wrong.
  • #7
  • Apr 6, 2012 8:39am Apr 6, 2012 8:39am
Quoting cyber1
This is bit messy but it works.
Inserted Code
 
//convert price to string and add 0
string price =DoubleToStr(1.5432,3)+0;
//convert string to double
double newprice =StrToDouble(price);
Thanks for your suggestions, but I think you misunderstood my requirement.

Let's say current price is 1.5692, I would like to display last second digit. For this current price example, I would like to display "9" only
  • #8
  • Apr 6, 2012 8:44am Apr 6, 2012 8:44am
Quoting klhh
Thanks for your suggestions, but I think you misunderstood my requirement.

Let's say current price is 1.5692, I would like to display last second digit. For this current price example, I would like to display "9" only
Use NormalizeDouble(price, 3) for that.
  • #9
  • Apr 6, 2012 8:51am Apr 6, 2012 8:51am
Quoting jamb0
Use NormalizeDouble(price, 3) for that.
current price = 1.5692
new price= NormalizeDouble (price, 3)

new price= 1.569

but I want only display 9, not 1.569
  • #10
  • Apr 6, 2012 8:53am Apr 6, 2012 8:53am
Quoting klhh
Thanks for your suggestions, but I think you misunderstood my requirement.

Let's say current price is 1.5692, I would like to display last second digit. For this current price example, I would like to display "9" only
This will display only the the 9 or the 4th character in the string.
Inserted Code
string newprice =StringSubstr(DoubleToStr(1.5692,4),4,1);
  • #11
  • Last Post: Apr 6, 2012 9:10am Apr 6, 2012 9:10am
Quoting cyber1
This will display only the the 9 or the 4th character in the string.
Inserted Code
string newprice =StringSubstr(DoubleToStr(1.5692,4),4,1);
ok thanks
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