class_docstr: This is the AroonUp from the indicator AroonUpDown developed by Tushar
  Chande in 1995.
  
  Formula:
    - up = 100 * (period - distance to highest high) / period
  
  Note:
    The lines oscillate between 0 and 100. That means that the "distance" to
    the last highest or lowest must go from 0 to period so that the formula
    can yield 0 and 100.
  
    Hence the lookback period is period + 1, because the current bar is also
    taken into account. And therefore this indicator needs an effective
    lookback period of period + 1.
  
  See:
    - http://stockcharts.com/school/doku.php?id=chart_school:technical_indicators:aroon
code: def __init__(self):
      super(AroonUp, self).__init__()
  
      self.lines.aroonup = self.up
  
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  from .None import Indicator, FindFirstIndexHighest, FindFirstIndexLowest
label_desc: Use image node_id 1 to create a new AroonUp object from inherited base classes: _AroonBase with example: obj = AroonUp()