ROR Rate of return indicator

["dtholz" <dtholz@xxxx>]

Hi some asked re Alan Hulls ROR indicator 
im sure it could be done but i cant get the indicator to look 
correct .. 

the formuala is 
Value of 52 week lin regression today = $11.67
Value of 52 week linear regression six month ago = $9.06
current share price = $ 12.37
Annual rate of return = (11.67 - 9.06)/12.37 = 0.21
Annualised and converted to a % = 42 %

so this 42 % is ploted and changes each day with price movements 
the is also a static line at 25 % and 40 % ..

I hope someone can create it cause my efforts are not working :(

David