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Modifying a MultiSymbol EA

  • #1
  • First Post: Sep 13, 2015 12:35pm Sep 13, 2015 12:35pm
Hi everyone,

I wish to implement my EA on several symbols (I wish to create such a scanner so I would like to avoid open multiple charts) and I have a doubt.

If I create an array with those symbols (e.g. string symbols["AAPL","MMM",...]) and in the OnTick() function I set a for loop, like:

Inserted Code
for(int i = 0; i < ArraySize(symbols); i++)
{
string symb = symbols[i];
//...
[b]long voltemp = Volume[i];[/b]
//...
}

The special array Volume (but like all others, Close, High, Low, ...) are automatically set on that symbol or I have to set another option to "select" each symbol and get correspondent data?

Thank you very much!
  • #2
  • Sep 13, 2015 2:27pm Sep 13, 2015 2:27pm
onTick is the wrong Method for this. Use onTimer instead.
Tick will only called when the symbol of the chart the es is running on gets a new tick
  • #3
  • Sep 13, 2015 2:33pm Sep 13, 2015 2:33pm
Thanks for reply. I'll follow your advice! But how could I call Volume or other predefined arrays for each symbol respectively? Thanks
  • #4
  • Sep 13, 2015 2:49pm Sep 13, 2015 2:49pm
Like open/high/low/close with iOpen, iHigh, iLow, iClose and for volume with iVolume.
I would advice you to build a single symbol indicator before you start with a dashboard or multi symbol ea. It looks you have to get some more experience with this simpler tasks before you got stuck on the complicateted stuff
  • #5
  • Sep 13, 2015 2:50pm Sep 13, 2015 2:50pm
build a class for the single symbol stuff the. You can iterate over it when you instantiate them with several symbols
  • #6
  • Last Post: Sep 13, 2015 3:46pm Sep 13, 2015 3:46pm
Thanks for the precious help! I come from C++ but I am a MQL rookie! I gotta still learn how to use all functions But I find it very complete and useful. I'll create classes as you suggested, nice idea! Thank you very much!
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