//@version=5
indicator(title="Know Sure Thing", shorttitle="KST", format=format.price, precision=4, timeframe="", timeframe_gaps=true)
roclen1 = input.int(10, minval=1, title = "ROC Length #1")
roclen2 = input.int(15, minval=1, title = "ROC Length #2")
roclen3 = input.int(20, minval=1, title = "ROC Length #3")
roclen4 = input.int(30, minval=1, title = "ROC Length #4")
smalen1 = input.int(10, minval=1, title = "SMA Length #1")
smalen2 = input.int(10, minval=1, title = "SMA Length #2")
smalen3 = input.int(10, minval=1, title = "SMA Length #3")
smalen4 = input.int(15, minval=1, title = "SMA Length #4")
siglen = input.int(9, minval=1, title = "Signal Line Length")
smaroc(roclen, smalen) => ta.sma(ta.roc(close, roclen), smalen)
kst = smaroc(roclen1, smalen1) + 2 * smaroc(roclen2, smalen2) + 3 * smaroc(roclen3, smalen3) + 4 * smaroc(roclen4, smalen4)
sig = ta.sma(kst, siglen)
plot(kst, color=#009688, title="KST")
plot(sig, color=#F44336, title="Signal")
hline(0, title="Zero", color = #787B86)