McClellan Summation Index — Indicator by Pseudorandom

Based on the description in Murphy, Tech. Analysis of Financial Markets. Wikipeadia also has a good description:

Without warranty - please trade based on your own analysis and let me know if you find any errors in the script.

Open-source script

In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.

Disclaimer

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Want to use this script on a chart?

study(title = "McClellan Summation Index", shorttitle="MCSI")
sym(s) => security(s, period, close)
difference2 = sym("ADVN") - sym("DECN")
advnema19 = ema(difference2, 19)
advnema39 = ema(difference2, 39)
osci = advnema19-advnema39
maout = cum(osci)
plot(maout, title="MCSI", color=red)