RSI DEMA For ThinkOrSwim

[Cybersloth]

I recently read about a strategy utilizing RSI set at 14 with a 40 period double exponential moving average on the RSI as a crossover signal. I've studied the application of simple and other standard moving averages applied to RSI, and standard moving average crossovers, but can't figure out how to apply/plot a double exponential moving average. Can someone please show me how, if this is feasible in TOS?

Could somebody PLEASE help me with this? Is it not possible to put a DEMA on another lower indicator such as the RSI in TOS?

 

[MerryDay]

This puts DEMA on the RSI lower indicator. This will work for all your lower indicators.
Although, there is not a huge difference from the regular RSI; it is possible that this slight change will reduce false signals

# RSI DEMA
# @MerryDay 5/1/2022
declare lower;

input length = 40;
input over_Bought = 70;
input over_Sold = 30;
input price = close;
input averageType = AverageType.WILDERS;
input showBreakoutSignals = no;

# Original Average Calculations
#def NetChgAvg = MovingAverage(averageType, price - price[1], length);
#def TotChgAvg = MovingAverage(averageType, AbsValue(price - price[1]), length);

# DEMA Average Calculations
def NetChgAvg = DEMA(price - price[1], length);
def TotChgAvg = DEMA(AbsValue(price - price[1]), length);

def ChgRatio = if TotChgAvg != 0 then NetChgAvg / TotChgAvg else 0;

plot RSI = 50 * (ChgRatio + 1);
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);