would like 3 standard deviation band plotted around this hull ma please thanks much
input price = close;
input length = 20;
input displace = 0;
plot HMA = MovingAverage(AverageType.wEIGHTED, price, length)[-displace];
HMA.DefineColor("Up", GetColor(1));
HMA.DefineColor("Down", GetColor(0));
HMA.AssignValueColor(if HMA > HMA[1] then HMA.color("Up") else HMA.color("Down"));
#AssignpriceColor(if HMA > HMA[1] then HMA.color("Up") else HMA.color("Down"));
input price = close;
input length = 20;
input displace = 0;
plot HMA = MovingAverage(AverageType.wEIGHTED, price, length)[-displace];
HMA.DefineColor("Up", GetColor(1));
HMA.DefineColor("Down", GetColor(0));
HMA.AssignValueColor(if HMA > HMA[1] then HMA.color("Up") else HMA.color("Down"));
#AssignpriceColor(if HMA > HMA[1] then HMA.color("Up") else HMA.color("Down"));