Patrick,
Yes I am looking for a feature different then Scratpower's Poly-reg-Static which fixes in time the centerline/MA.
I.e., on a D1 chart I am interested to to see where the Deviation Channels where last week, last month or on any given date.
Having an adjustable start date will allow one to truly see where the channel was historically as the end date is already adjustable through the "Period" setting.
This will allow visual backtesting of any method using Polynomial Regression Channels on any time frame as one could go back in time and verify where the channels where on any given date/time series.
Thanks for your support of the feature request. When I look at code it looks like hieroglyphics so I am not sure how difficult or easy adding this type of feature is.
Himalaya