// DC Test
function run()
{
	set(PLOTNOW);
	StartDate = 20170722;
	BarPeriod = 1;
	vars Price = series(price());
	plot("DC",DChannel(20),0,RED);
}

// Donchian Channel
var DChannel(int Period)
{
	rRealUpperBand = HH(Period,0);
	rRealLowerBand = LL(Period,0);
	return rRealUpperBand;
}

// DC Test
function run()
{
	set(PLOTNOW);
	StartDate = 20170722;
	BarPeriod = 1;
	vars Price = series(price());
	DChannel(20);
	plot("DC UP",rRealUpperBand,BAND1,RED);
	plot("DC DOWN",rRealLowerBand,BAND2,GREY);
}