bar_conversion.rb

Path: lib/gruff/bar_conversion.rb
Last Update: Wed Mar 04 23:58:40 -0700 2009

Original Author: David Stokar 

      This class perfoms the y coordinats conversion for the bar class.

      There are three cases:

  1. Bars all go from zero in positive direction
              2. Bars all go from zero to negative direction
              3. Bars either go from zero to positive or from zero to negative

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