This is a revised version of Chris Moody's "CM_Donchian Channel Modified_V2" script.
ChrisMoody: "Modified Donchian Channel with separate adjustments for upper and lower levels. Purpose is if you expect big move up, use lower input for example 3 or 4, and longer upper input, eg. 40 - 100 and use lower input line as a stop out. Opposite if you expect big move down. Mid Line Rule in Long Example: If lower line is below entry take partial profits at Mid Line and move stop to Break even. If Lower line moves above entry price before price retraces to midline use Lower line as Stop...Opposite if Shorting."
V3 Revisions by JustUncleL 23-Aug-2017:
Change alert to use alertcondition
Upgraded to Version3 Pinescript.
Moved all breakout arrows to bottom of screen
Added bar colouring patch.
Changed some defaults.
릴리즈 노트
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...Small work around
Patch Bar colouring, changed to using just one "barcolor" call. Sometimes two calls fail because conflicts with other scripts.
@pst6000, That is part of ChrisMoody's original comments. I believe what he means there : set the lower length to 3 or 4 and set the upper length to 30-40, when there is a Big move UP. Visa versa for Big move DOWN.