PumpCatcher

//@version=3
study("Pump Catcher")
length = input(title="Lookback Period (in candles)", type=integer, defval=20)
abnormalVolumeThreshold = input(title="Abnormal Volume threshold (1-99)", type=integer, defval=50, minval = 1, maxval = 99)

mav = sma(volume, length) // Average volume of the last 20 candles.
difference = mav - mav[1] // Difference between the last candles volume and this one.
volumeIncreasing = difference > 0 // Is the volume increasing? 
valueIncreasing = close > close[1] // Is the value increasing? 
increasing = valueIncreasing and volumeIncreasing
vroc = increasing ? difference * (100 / mav[1]) : 0 // If it's increasing then set the rate, otherwise set it to 0. 

// To normalise the data express the current rate of change as a % of the maximum rate of change the asset has ever had.
historicMax = 0.0
firstVrocNormalizedValue = 40 // Because ICO coins generally kick off trading with a lot of volatility
historicMax := vroc > historicMax[1] ? vroc : nz(historicMax[1], firstVrocNormalizedValue)
vrocNormalized = vroc / historicMax * 100

plot(vrocNormalized, color=#F2F2F2, linewidth=1)
fill(hline(abnormalVolumeThreshold), hline(abnormalVolumeThreshold))