Starc Bands

[henry1224]

TR:=Max((H-L),Max(Ref(C,1)-H,Ref(C,1)-L));
Sband:MA((H+L)/2,Per1),Width2,ColorBlack;
UB:Sband +(MA(TR,Per2)*1.33),Width2,ColorViolet;
LB:Sband -(MA(TR,Per2)*1.33),Width2,ColorViolet;

Under the Parameters tab

Per1 double 6 2 100

Per2 Double 15 1 100