# indie:lang_version = 5
from indie import indicator, param, plot, color
from indie.algorithms import Sma


@indicator('ADR')  # Average Day Range
@param.int('length', default=14, min=1)
@plot.line(color=color.BLUE)
def Main(self, length):
    sma_high = Sma.new(self.high, length)
    sma_low = Sma.new(self.low, length)
    return sma_high[0] - sma_low[0]