Fisher Transform  Indicator

Are there any plans to implement Ehler's Fisher Transform in Backtrader? It would be great to have it as part of the standard repertoire of indicators than many reinventing the wheel all over again.

Not at the moment

Can you give me some pointers to implement it?

Sorry but there aren't many free resources lately.

I have written some code but it is not working. I believe I am missing something.
import backtrader as bt import math __all__ = ['Fisher'] class Fisher(bt.Indicator): lines = ('h', 'l', 'scaled','Fx',) params = (('period', 20),) _alpha = 0.33 def __init__(self): self.addminperiod(self.params.period) self.l.h = bt.indicators.Highest(self.data.close, self.p.period) self.l.l = bt.indicators.Lowest(self.data.close, self.p.period) def next(self): d = self.data.close[0] h = self.l.h[0] l = self.l.l[0] scaled = self.l.scaled Fx = self.l.Fx scaled[0] = self._alpha * 2 * ((d  l) / (h  l)  .5) + (1self._alpha) * scaled[1] if scaled[0] > 0.9999: scaled[0] = 1 elif scaled[0] < 0.9999: scaled[0] = 1 Fx[0] = .5 * math.log((1 + scaled[0]) / (1  scaled[0])) + .5 * Fx[1]