MQ4 read out to 5th digit | Forex Factory

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MQ4 read out to 5th digit

  • #1
  • First Post: Oct 4, 2011 7:32am Oct 4, 2011 7:32am
Hello all...yet another question about programming. I'm sure for someone this is a really easy answer.

I have written several EA's but cannot get any of them to calculate a price target or "double" beyond the 4th digit. Even though I enter a price (Extern double) with 5 digits (ex: 1.32017) I only get a rounded number. In the case of this example 1.3202.

While this is a relatively minor issue, I would like to be as accurate as possible including down to the fractional 1/10 of a pip.

Can anyone help?
  • #2
  • Oct 4, 2011 7:52am Oct 4, 2011 7:52am
mql is as lame as a donkey with no legs.

printing numbers only shows to 4 digits (to my knowledge and experience) unless you force it to show a specific number using doubletostr.... so, in your debugging always use doubletostr to see exactly what you are computing at different points.

i think you'll find there is no issue at all, and it's all just that what you are literally looking at doesn't appear correct when in fact it is. it's just not printing accurately.
Congratulations ScalaFX for coming out of the closet!
  • #3
  • Oct 4, 2011 8:51am Oct 4, 2011 8:51am
Quoting nubcake
mql is as lame as a donkey with no legs...i think you'll find there is no issue at all, and it's all just that what you are literally looking at doesn't appear correct when in fact it is. it's just not printing accurately.
Unfortunately this is not the case. As an example I have an extern double that I am using for a price target...limit or stop. I enter a 5 digit number and get a rounded 4 digit result. Then when that number is executed in the code it is executed at the rounded 4 digit number NOT the entered string.

Just for grins and giggles I tried entering the number as a string then converting it to a double...same result. So does this mean that all calculations and math functions using double are only capable with 4 digits?
  • #4
  • Oct 4, 2011 9:00am Oct 4, 2011 9:00am
Quoting gspajon
Unfortunately this is not the case. As an example I have an extern double that I am using for a price target...limit or stop. I enter a 5 digit number and get a rounded 4 digit result. Then when that number is executed in the code it is executed at the rounded 4 digit number NOT the entered string.

Just for grins and giggles I tried entering the number as a string then converting it to a double...same result. So does this mean that all calculations and math functions using double are only capable with 4 digits?
oh right. i missed the part where this was for orders and weren't just generic values. have you remembered to use normalizedouble when dealing with actual orders?
Congratulations ScalaFX for coming out of the closet!
  • #5
  • Edited 10:44am Oct 4, 2011 10:33am | Edited 10:44am
Quoting nubcake
oh right. i missed the part where this was for orders and weren't just generic values. have you remembered to use normalizedouble when dealing with actual orders?
No I did not use a normalized double...I'll try that...thank you

**UPDATE**
Well that didn't work either...example of code:
extern double stop = 1.32355;
SL = NormalizeDouble(Stop,5);

result: 1.3236...I'm waiting to see if it will execute at that number
  • #6
  • Oct 4, 2011 1:05pm Oct 4, 2011 1:05pm
Create a script with something similiar to below. Play around with the NormalizeDouble and DoubleToStr functions and you will get a better understanding of how they work.

Inserted Code
 
#property show_inputs
 
extern double stop = 1.32355;
 
int start()
{   
   double SL = NormalizeDouble( stop, 5 );
 
   Print( "SL(4) = ", DoubleToStr( SL, 4 ) );
   Print( "SL(5) = ", DoubleToStr( SL, 5 ) );
   Print( "SL(6) = ", DoubleToStr( SL, 6 ) );
}
  • #7
  • Oct 4, 2011 4:41pm Oct 4, 2011 4:41pm
Quoting zznbrm
Create a script with something similiar to below. Play around with the NormalizeDouble and DoubleToStr functions and you will get a better understanding of how they work.

Inserted Code
 
#property show_inputs
 
extern double stop = 1.32355;
 
int start()
{   
   double SL = NormalizeDouble( stop, 5 );
 
   Print( "SL(4) = ", DoubleToStr( SL, 4 ) );
   Print( "SL(5) = ", DoubleToStr( SL, 5 ) );
   Print( "SL(6) = ", DoubleToStr( SL, 6 ) );
}
Thank you for your suggestion, however, this does not work either. I get the correct digits only using the print command does not EXECUTE with the string as input. It executes only at the rounded number displayed using the comment command.

extern double stop = 1.32355;

int start()
{
double SL = NormalizeDouble( stop, 5 );
comment ("Stop Loss = ",SL);
}


So I think we are coming to a consensus...mql does not process digits greater than 4 without rounding.
  • #8
  • Oct 4, 2011 4:55pm Oct 4, 2011 4:55pm
Quoting gspajon
Thank you for your suggestion, however, this does not work either. I get the correct digits only using the print command does not EXECUTE with the string as input. It executes only at the rounded number displayed using the comment command.

extern double stop = 1.32355;

int start()
{
double SL = NormalizeDouble( stop, 5 );
comment ("Stop Loss = ",SL);
}

So I think we are coming to a consensus...mql does not process digits greater than 4 without rounding.
Well, that is not my opinion at all - mql most certainly handles digits greater than 4.

I do not think you are paying close enough attention to what you are doing. Look at your call to the Comment() function - if you want 5-digits to be displayed, you need to tell it to display with 5-digits:

Comment( "Stop Loss = ", DoubleToStr( SL, 5 ) );
  • #9
  • Last Post: Edited 8:13pm Oct 4, 2011 8:01pm | Edited 8:13pm
Quoting zznbrm
Well, that is not my opinion at all - mql most certainly handles digits greater than 4.

I do not think you are paying close enough attention to what you are doing. Look at your call to the Comment() function - if you want 5-digits to be displayed, you need to tell it to display with 5-digits:

Comment( "Stop Loss = ", DoubleToStr( SL, 5 ) );
You are absolutely right...I wasn't doing it right. I did the opposite in my comments...

I have made the appropriate changes and am now waiting to see if execution occurs as displayed. I still have the string as a normalized double.

**UPDATE**
The execution occurred as programmed. THANK YOU VERY MUCH for your help.
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