Hello,

I would like to draw a Keltner channel (55 EMA, 4.5 Deviations, based on 40-day ATR) around a custom indicator.

How would I go about doing this?

thanks

Here's what I'm trying to work from:

Pds1:= Input("EMA Periods?",1,100,55);
Pds2:= Input("ATR Periods?",1,100,40);
Mult:= Input("ATR Multiple?",1,10,1);
EMA:= Mov(P,Pds1,E);
Diff:= ATR(Pds2) * Mult;
UBand:= EMA + Diff;
LBand:= EMA - Diff;

Ema;
UBand;
LBand;

The name of the customer indicator is "Volume Sum"

Not exactly what you are looking for but this is the formula for the Keltner Channels I use. Perhaps you can adapt if it is suitable.

Mov((H+L+C)/3,22,E);

Mov((H+L+C)/3,22,E) + Mov((H-L),22,E);

Mov((H+L+C)/3,22,E) + (2 * Mov((H-L),22,E));

Mov((H+L+C)/3,22,E) + (3 * Mov((H-L),22,E));

Mov((H+L+C)/3,22,E) - Mov((H-L),22,E);

Mov((H+L+C)/3,22,E) - (2 * Mov((H-L),22,E));

Mov((H+L+C)/3,22,E) - (3 * Mov((H-L),22,E));