# indie:lang_version = 5
from math import log
from indie import indicator, format, param, level, color, plot, MutSeriesF
from indie.algorithms import Change, Ema


@indicator('TRIX', format=format.PRICE)
@param.int('length', default=18, min=1)
@level(0, line_color=color.GRAY, title='Zero')
@plot.line(color=color.RED, title='TRIX')
def Main(self, length):
    return 10000 * Change.new(Ema.new(Ema.new(Ema.new(MutSeriesF.new(log(self.close[0])), length), length), length))[0]