Declare lower;
input fastLength = 12;
input slowLength = 26;
input MacdLength = 9;
input MacdAverageType = AverageType.EXPONENTIAL;
def Diff = MACD(fastLength, slowLength, MACDLength, MACDaverageType).Diff;
input RsiLength = 14;
input RsiPrice = close;
input RsiAverageType = AverageType.WILDERS;
input RsiOverbought = 70;
input RsiOversold = 30;
input lookBackPeriod = 4;
def NetChgAvg = MovingAverage(RSIaverageType, RSIprice - RSIprice[1], RSIlength);
def TotChgAvg = MovingAverage(RSIaverageType, AbsValue(RSIprice - RSIprice[1]), RSIlength);
def ChgRatio = if TotChgAvg != 0 then NetChgAvg / TotChgAvg else 0;
def RSI = 50 * (ChgRatio + 1);
def pivotLowMACD = Diff > Diff[1] and Diff[1] > Diff[2] and Diff[2] < Diff[3] and Diff[3] < Diff [4];
def pivotHighMACD = Diff < Diff[1] and Diff[1] < Diff[2] and Diff[2] > Diff[3] and Diff[3] > Diff[4];
def oversoldRSI = RSI <= RSIoversold;
def overboughtRSI = RSI >= RSIoverbought;
plot scan = pivotLowMACD and highest(oversoldRSI[1], 4) > 0 or pivotHighMACD and lowest (overboughtRSI[1], 4) < 0;