A variety of Chart Engines

Description

The original code came from Scott Guthries chart engine example. The differences from original code are:

• Some of charts attributes are exposed as properties
  
  
  • ChartGenerator.ChartLine.Color
    
  • ChartGenerator.ChartLine.Style
    
  • ChartGenerator.ChartLine.Width
  
  
• The above are used for setting the properties of each line from chart
  
  
  • ChartGenerator.Engine.ImageBackgroundColor
    
  • ChartGenerator.Engine.ImageHeight
    
  • ChartGenerator.Engine.ImageWidth
    
  • ChartGenerator.Engine.IsScaled - determines when the chart will be scaled or not.
  
  
• The minimum and maximum points are calculated inside using Array methods. We copied the Y values of each line into an array, sorted the array and using the first and the last member of array determined the maximum and the minimum.