I'm afraid there is nothing to cure in this indicator! The simple algebraic combination of time series is used to calculate the green curve! There zero can turn out only because of a glitch of the terminal and the absence of the value of the high or low of a candle or a hairpin! I just do not see any defects in the code!
Thanks for checking.
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Laguerre Filter:
The indicator consisting of two moving averages from John Ehlers' book "Cybernetic Analysis for Stocks and Futures: Cutting-Edge DSP Technology to Improve Your Trading".
Red moving average is a filter and a medium-term trend indicator. Blue moving average is used as the fast trends filter with the simplest smoothing tool.
Author: Nikolay Kositsin