OrderLot() Problem

[Franco]

Hey all,

My demo account in the strategy tester uses lots of two decimals, 0.21, 0.55 etc etc. When I call OrderLots() I get a one decimal value, 0.5, 0.6 etc. What is even more problematic is the OrderProfit() and OrderSwap() is calculated from the OrderLot() with one decimal thus if I manually add the results they are not the same as the results given by the strategy tester.

Does anyone maybe know how to fix this?

Thanks

[Franco]

Found the problem when opening a mini account the problem disappears

[Ian Venner]

To find out how many decimal places your lot sizes can use call

MarketInfo(Symbol(),MODE_LOTSTEP));

[William Roeder]

Saidar:
When I call OrderLots() I get a one decimal value, 0.5, 0.6 etc.

No you don't. When you call OrderLots() you get a double 0.5000000000 0.600000000.

It's only if you Print (Alert, Comment or StringConcatenate) a double without using DoubleToStr() that the trailing zero's get dropped, e.g. Print(1.2000) will show 1.2 and Print(1.2300) will show 1.23.

int DigitsLots(string pair=""){
    if (pair == "") pair = Symbol();
    double  LS      = MarketInfo(pair, MODE_LOTSTEP);
    int     nDigits = 0;
    for(double test = 1; test > LS; test /= 10.) nDigits++;
    return(nDigits);
}

[dabbler]

WHRoeder:

No you don't. When you call OrderLots() you get a double 0.5000000000 0.600000000.

int DigitsLots(string pair=""){
    if (pair == "") pair = Symbol();
    double  LS      = MarketInfo(pair, MODE_LOTSTEP);
    int     nDigits = 0;
    for(double test = 1; test > LS; test /= 10.) nDigits++;
    return(nDigits);
}

This code look well dodgy. You are doing one of them there direct double compares, which may or may not work as you hope.

[dabbler]

Saidar:

Hey all,

My demo account in the strategy tester uses lots of two decimals, 0.21, 0.55 etc etc. When I call OrderLots() I get a one decimal value, 0.5, 0.6 etc. What is even more problematic is the OrderProfit() and OrderSwap() is calculated from the OrderLot() with one decimal thus if I manually add the results they are not the same as the results given by the strategy tester.

Does anyone maybe know how to fix this?

Thanks

Use MODE_MINLOT and MODE_LOTSTEP correctly in MarketInfo and all will become clear.

If you run this code as a script you should get a better idea ...

string Info(int type, int precision){
   return( DoubleToStr( MarketInfo(Symbol(),type), precision ) );
}
//---------------------------------------------------------------------------------
int start(){

   string str="";
   str= str + "MODE_DIGITS="        + Info(MODE_DIGITS,0)          +"\n";
   str= str + "MODE_SPREAD="        + Info(MODE_SPREAD,0)          +"\n";
   str= str + "MODE_STOPLEVEL="     + Info(MODE_STOPLEVEL,0)       +"\n";
   str= str + "MODE_FREEZELEVEL="   + Info(MODE_FREEZELEVEL,0)     +"\n";
   str= str + "MODE_TICKVALUE="     + Info(MODE_TICKVALUE,Digits)  +"\n";
   str= str + "MODE_TICKSIZE="      + Info(MODE_TICKSIZE,Digits)   +"\n";
   str= str + "MODE_POINT   ="      + Info(MODE_POINT,Digits)      +"\n";
   str= str + "MODE_MINLOT="        + Info(MODE_MINLOT,3)          +"\n";
   str= str + "MODE_LOTSTEP="       + Info(MODE_LOTSTEP,3)         +"\n";
   str= str + "MODE_MAXLOT="        + Info(MODE_MAXLOT,3)          +"\n";
   str= str + "MODE_LOTSIZE="       + Info(MODE_LOTSIZE,0)         +"\n";
   str= str + "MODE_MARGINREQUIRED="+ Info(MODE_MARGINREQUIRED,2)  +"\n";
   Comment(str);
   
   return(0);
}