Variable moving average standard deviation?

[arod49]

I was wondering if its possible to add standard deviation to a variable moving average to create something similar to Bollinger Bands?

 

[BenTen]

Sure, you can take the following code from this script and replace VixFix with whatever variable you want.

# BollingerBands code

input ShowBollingerBands = No;
input displace = 0;
input BBlength = 20;
input Num_Dev_Dn = -2.0;
input Num_Dev_up = 2.0;
input averageType = AverageType.Simple;

def sDev = stdev(data = VixFix[-displace], length = BBlength);
def MidLine = MovingAverage(averageType, data = VixFix[-displace], length = BBlength);

def LowerBand = MidLine + num_Dev_Dn * sDev;
def UpperBand = MidLine + num_Dev_Up * sDev;
plot LB = if ShowBollingerBands then LowerBand else Double.NaN;
plot UB = if ShowBollingerBands then UpperBand else Double.NaN;
LB.SetDefaultColor(GetColor(0));
UB.SetDefaultColor(GetColor(5));

P.S: next time please post your question in the Questions forum.

 

[arod49]

thank you and ill make sure to use the questions forum next time!

 

[arod49]

I keep typing VariableMA in the Vixfix but its not working

 

[horserider]

@arod49 You need to define variableMA first then use VMA value in the BB code.

 

[arod49]

how do I define variableMA?

 

[BenTen]

@arod49 post the entire code of what you’re trying to get done.

 

[horserider]

USe the ToS variable MA study. So the study must first define the variable MA and then you can use that value for the center of the bands.