The Fisher Transform attempts to be a major turning point indicator.
Length (Len = 13)
O/B (a = 5)
O/S (b = -5)
IF BARINDEX < len THEN
value1 = 0
fish = 0
ELSE
MaxH = Highest[len](MEDIANPRICE)
MinL = Lowest[len](MEDIANPRICE)
Value1 = ( (MEDIANPRICE - MinL)/(MaxH - MinL) - .5) + .67 * Value1
If Value1 > .99 then
Value1 = .999
ENDIF
If Value1 < -.99 then
Value1 = -.999
ENDIF
Fish = 0.5*Log((1 + Value1)/(1 - Value1)) + .5 * Fish
Trigger=fish[1]
a=5
b=-5
ENDIF
RETURN Fish,Trigger,a,b