Linear Regression Curve in Pine Script of www.tradingview.com

Please find below code for 20 Period Linear Regression Curve Fitting. Test it out in the Pine Editor of https://www.tradingview.com. More details follow as time permits!

//@version=3
study(title="LinearRegressionCurve20", shorttitle="LRC20", overlay=true)
src = close
len = input(defval=20, minval=1, title="Length")
offset = 0
out = linreg(src, len, offset)
plot(out, color=purple, linewidth=2)
//END

The Screenshot of 20 Period Linear Regression Curve(Purple line) on 1 day candles of BTSUSD(Poloniex):

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