class_docstr: Measures the ratio of change in prices over a period with base 100
  
  This is for example how ROC is defined in stockcharts
  
  Formula:
    - roc = 100 * (data - data_period) / data_period
  
  See:
    - http://stockcharts.com/school/doku.php?id=chart_school:technical_indicators:rate_of_change_roc_and_momentum
class_docstr_tok: ["Measures","the","ratio","of","change","in","prices","over","a","period","with","base","100","This","is","for","example","how","ROC","is","defined","in","stockcharts","Formula",":","-","roc","=","100","*","(","data","-","data_period",")","\/","data_period","See",":","-","http",":","\/\/stockcharts.com\/school\/doku.php","?","id=chart_school",":","technical_indicators",":","rate_of_change_roc_and_momentum"]
code: def __init__(self):
      self.l.roc100 = 100.0 * ROC(self.data, period=self.p.period)
      super(RateOfChange100, self).__init__()
  
file_path: backtrader/backtrader/indicators/momentum.py
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  from .None import Indicator
label_desc: Use image node_id 1 to create a new RateOfChange100 object from inherited base classes: Indicator with example: obj = RateOfChange100()