Two Independent Crossovers / Timing Check

August 14th, 2009, 11:52 PM

Hello,
I'm attempting to identify two independent crossover events and verify if they both occur within 5 bars of each other. I've started with the following:

Code

in Variables:
private bool crossoverEventLongA = false;
private bool crossoverEventLongB = false;
private bool crossoverLongBoth = false;
private bool crossoverEventShortA = false;
private bool crossoverEventShortB = false;
private bool crossoverShortBoth = false;
private int countDown = 0; 
in OnBarUpdate():
if (CrossAbove(PositiveHolder,EMAPositiveHolder,1)) 
{ 
 crossoverEventLongA = true; 
}
if (CrossAbove(NegativeHolder,EMANegativeHolder,1)) {crossoverEventLongB = true; }
if (crossoverEventLongA && crossoverEventLongB) {crossoverLongBoth = true;}
else crossoverLongBoth = false;

what I'm not sure how to do is use countdown to prove the the EventB occurred within 6 bars of EventA.
I'm thinking I can use a countdown function somewhere to give a true/false result if the two did occur within the specified time period

Code

 for (countdown = 6; countdown>0; countdown--)

Please help with the missing code / syntax to help me get a qualified result with the timing parameter. I've attached a screenshot to show that these cross sometimes on the same bar and sometimes not.
Thanks in advance!
Kirk (zeller4)

August 15th, 2009, 12:15 AM

Perhaps when EventA occurs, record that bar number. When EventB occurs, record that bar number. Then do Math.Abs() and see if within 6 bars.

Code

                            
#variables
int eventa_bar = 0;
int eventb_bar = 0;

#onbarupdate
if (eventA)
  eventa_bar = CurrentBar;

if (eventB)
  eventb_bar = CurrentBar;

int barsapart = Math.Abs(eventa_bar - eventb_bar);

if (barsapart < 6)
  doSomething()

Mike

June 5th, 2010, 04:17 AM

Hi Mike

Why is the "Maths.Abs" needed?

Thanks

June 6th, 2010, 07:07 AM

diverdan

Hi Mike

Why is the "Maths.Abs" needed?

Thanks

Because it's better/shorter/smarter than writing:

Code

                            
int barsapart;
if (eventa_bar - eventb_bar) >= 0
  barsapart=eventa_bar - eventb_bar;
else
  barsapart=eventb_bar - eventa_bar;

if (barsapart < 6)
  doSomething();

Remember that we don't know if event A occurs before event B or not.

Two Independent Crossovers / Timing Check

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Two Independent Crossovers / Timing Check