# Create custom RSI with range from 100 to minus 100

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hello, is it possible to make the rsi have a zero line and range between -100 and 100 instead of 1 to 100… what would i need to do it the calculations to make it range like this?  thanks for any assistance

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Posted by (Questions: 1, Answers: 0)
Asked on July 20, 2021 4:30 am
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Sorry but I don't have any math skills above the level of basic algebra. I don't have a clue how to perform that math to accomplish what you requested. I am approving your question for the forum in case one of our viewers can explain how to do that math. I also updated the title of your question to make it more clear as what you are requesting.
( at July 20, 2021 7:15 am)
 ▲ 0 ▼ ✔ Private answer # # TD Ameritrade IP Company, Inc. (c) 2007-2021 # declare lower; input length = 14; input over_Bought = 50; input over_Sold = -50; input price = close; input averageType = AverageType.WILDERS; input showBreakoutSignals = no; def NetChgAvg = MovingAverage(averageType, price - price[1], length); def TotChgAvg = MovingAverage(averageType, AbsValue(price - price[1]), length); def ChgRatio = if TotChgAvg != 0 then NetChgAvg / TotChgAvg else 0; plot RSI = 100 * (ChgRatio + 0); plot OverSold = over_Sold; plot OverBought = over_Bought; plot UpSignal = if RSI crosses above OverSold then OverSold else Double.NaN; plot DownSignal = if RSI crosses below OverBought then OverBought else Double.NaN; UpSignal.SetHiding(!showBreakoutSignals); DownSignal.SetHiding(!showBreakoutSignals); RSI.DefineColor("OverBought", GetColor(5)); RSI.DefineColor("Normal", GetColor(7)); RSI.DefineColor("OverSold", GetColor(1)); RSI.AssignValueColor(if RSI > over_Bought then RSI.color("OverBought") else if RSI < over_Sold then RSI.color("OverSold") else RSI.color("Normal")); OverSold.SetDefaultColor(GetColor(8)); OverBought.SetDefaultColor(GetColor(8)); UpSignal.SetDefaultColor(Color.UPTICK); UpSignal.SetPaintingStrategy(PaintingStrategy.ARROW_UP); DownSignal.SetDefaultColor(Color.DOWNTICK); DownSignal.SetPaintingStrategy(PaintingStrategy.ARROW_DOWN); Attachments: Marked as spam Posted by Byronfern S (Questions: 8, Answers: 23) Answered on July 20, 2021 12:15 pm