Weighted ROC

study("Weighted ROC")
ROC1 = input(title="ROC1", type=integer , defval=10)
ROC2 = input(title="ROC2", type=integer , defval=5)
ROC3 = input(title="ROC3", type=integer , defval=1)
W_ROC1 = input(title="ROC1", type=integer , defval=0.5)
W_ROC2 = input(title="ROC2", type=integer , defval=0.3)
W_ROC3 = input(title="ROC3", type=integer , defval=0.2)


ROC1W = (close - close[1*ROC1]) / close[1*ROC1]
ROC2W = (close - close[1*ROC2]) / close[1*ROC2]
ROC3W = (close - close[1*ROC3]) / close[1*ROC3]

ROC = W_ROC1*ROC1W + W_ROC2*ROC2W + W_ROC3*ROC3W

scolor = ROC >= 0 ? green : red

hline(0)
plot(ROC, color=scolor, offset = 0, style=columns)