Does anybody have Vortex and Supertrend user defined function? I need use these functions basically call then in other program.

AFL Programming
1

Hi All,
Request to help with Vortex and Supertrend user defined function , which can be called in other AFl.

Regards
gpsnitie

3

Thanks.
I do get the AFL , but how do I convert it to function?

I know the concept, need introduce variables and return the value but still.

4

The entire AFL function is at the bottom of the page, you don't need to "convert" anything. Here it is again:

function SuperTrend(lenATR, width)
{
	nATR = ATR(lenATR);
	pAvg = (H+L) / 2;
	
	upperBand = pAvg + width * nATR;
	lowerBand = pAvg - width * nATR;
	isUpTrend = True;
	dn = DateNum();
	
	for (i=lenATR; i<BarCount; ++i)
	{
		if (C[i] > upperBand[i-1])
			isUpTrend[i] = True;
		else if (C[i] < lowerBand[i-1])
			isUpTrend[i] = False;
		else
			isUpTrend[i] = isUpTrend[i-1];
			
		if (isUpTrend[i])
			lowerBand[i] = Max(lowerBand[i], lowerBand[i-1]);
		else
			upperBand[i] = Min(upperBand[i], upperBand[i-1]);
			
		//_TRACE(NumToStr(dn[i], 8.0, False)+": Close="+C[i]+" isUpTrend="+isUpTrend[i]+" upperBand="+upperBand[i]+" lowerBand="+lowerBand[i]);
	}
	
	super = IIf(isUpTrend, lowerBand, upperBand); 	
	return super;
}
3 Likes
5

@gpsnitie the Vortex indicator from January 2010 Technical Analysis of Stocks & Commodities,

http://www.amibroker.com/members/traders/01-2010.html

2 Likes