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Mt4 calculation rounding help

  • #1
  • First Post: Dec 9, 2011 10:31am Dec 9, 2011 10:31am
Hi, I am adjusting an indicator for money management purposes. I wonder if anyone can help with this?

I am using the following calculation to display the number of micro lots to use for a basket system. The basic calculation is simple enough.

oner = 30 pounds in my example and is user definable hence the use of the variable. Percent in this example is 10%.

ObjectSetText ("onerequals", "1R = " + (AccountBalance()/oner/percent) + " micro lots" , 8, "Verdana", Lime);

This works fine and gives me the answer I would expect given my account balance but how can I get this calculation to return a whole number only and, crucially, to round it down to the nearest whole number? So if the return was 1.76493 it would just give me 1.

This isn't a major problem for this display but I also want to use that calculation to display the target for the basket which does rather hinge on having a whole number calculation or it throws out the calculation.

I hope this is fairly straightforward and someone can help?

Thanks
  • #2
  • Dec 9, 2011 10:38am Dec 9, 2011 10:38am
Move the calculation to a function and set the function return value to an integer.

Example:


int NumberGenerator()
{
return(AccountBalance()/oner/percent);
}


Then call it in your script:

ObjectSetText ("onerequals", "1R = " + NumberGenerator()+ " micro lots" , 8, "Verdana", Lime);


Another possibility is to use DoubleToStr()

So:

ObjectSetText ("onerequals", "1R = " +DoubleToStr((AccountBalance()/oner/percent), 0)+ " micro lots" , 8, "Verdana", Lime);
  • #3
  • Dec 9, 2011 11:34am Dec 9, 2011 11:34am
Quoting Ronald Raygun
Move the calculation to a function and set the function return value to an integer.

Example:


int NumberGenerator()
{
return(AccountBalance()/oner/percent);
}


Then call it in your script:

ObjectSetText ("onerequals", "1R = " + NumberGenerator()+ " micro lots" , 8, "Verdana", Lime);


Another possibility is to use DoubleToStr()

So:

ObjectSetText ("onerequals", "1R = " +DoubleToStr((AccountBalance()/oner/percent), 0)+ " micro lots" , 8, "Verdana", Lime);
Excellent, thanks for your help!
  • #4
  • Dec 9, 2011 12:01pm Dec 9, 2011 12:01pm
Quoting Ronald Raygun
Move the calculation to a function and set the function return value to an integer.

Example:


int NumberGenerator()
{
return(AccountBalance()/oner/percent);
}


Then call it in your script:

ObjectSetText ("onerequals", "1R = " + NumberGenerator()+ " micro lots" , 8, "Verdana", Lime);


Another possibility is to use DoubleToStr()

So:

ObjectSetText ("onerequals", "1R = " +DoubleToStr((AccountBalance()/oner/percent), 0)+ " micro lots" , 8, "Verdana", Lime);
Ok, I've found the DoubleToStr the easiest to use but it just rounds to the nearest whole number, is there a way to get it to round down even if the returned number is say 1.65 it would just display 1?
  • #5
  • Edited 1:57pm Dec 9, 2011 12:38pm | Edited 1:57pm
StringSubStr(DoubleToStr((AccountBalance()/oner/percent), 0, StringFind("."));

[edit]

euclid below has a better solution.
  • #6
  • Dec 9, 2011 1:21pm Dec 9, 2011 1:21pm
Quoting Hugh Briss
Ok, I've found the DoubleToStr the easiest to use but it just rounds to the nearest whole number, is there a way to get it to round down even if the returned number is say 1.65 it would just display 1?
DoubleToStr(MathFloor(AccountBalance()/oner/percent),0)
  • #7
  • Dec 9, 2011 2:03pm Dec 9, 2011 2:03pm
Outstanding, thanks both for your help.
  • #8
  • Dec 9, 2011 3:29pm Dec 9, 2011 3:29pm
Quoting Hugh Briss
Hi, I am adjusting an indicator for money management purposes. I wonder if anyone can help with this?

I am using the following calculation to display the number of micro lots to use for a basket system. The basic calculation is simple enough.

oner = 30 pounds in my example and is user definable hence the use of the variable. Percent in this example is 10%.

ObjectSetText ("onerequals", "1R = " + (AccountBalance()/oner/percent) + " micro lots" , 8, "Verdana", Lime);

This works fine and gives me the answer I would expect given my account...
I'm not sure but I think normalizedouble would also work.

oner_rnd = NormalizeDouble(oner,0);
  • #9
  • Last Post: Dec 9, 2011 4:10pm Dec 9, 2011 4:10pm
Quoting pip_seeker
I'm not sure but I think normalizedouble would also work.

oner_rnd = NormalizeDouble(oner,0);
Thanks, I've got it sorted just fine now. As my programming skills amount to BASIC and a little html this forum is a real help.
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