VantagePoint:

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   Adds vantage points to an existing plot.

   Color can be a character like 'k' for black or an array [r,g,b].

   Since version 2014.1
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   Form:
   VantagePoint( x, y, A, g, color )
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   Inputs
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   x       (1,:)   X points        	
   y       (1,:)   Y points           	
   A       (:,:)   Visibility matrix           	
   g       (2,1)   Reference points            	
   color   (1,:)   Line color default is green            	

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   Outputs
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   None

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Children:

Math: Linear/Mag