MathGroup Archive 1996

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Trilinear plots

  • To: mathgroup at
  • Subject: [mg4573] Trilinear plots
  • From: friendly at (Michael Friendly)
  • Date: Fri, 16 Aug 1996 05:15:05 -0400
  • Organization: York University, Ontario, Canada
  • Sender: owner-wri-mathgroup at

I'm looking for ideas on how to do trilinear plots, ie, plots
on three axes which form an equilateral triangle (where the three coords are
usually scaled so they sum to 1 for each observation)?

Equivalently, this plot can be described as a plot of the locations of 3D  
points in the plane defined by x+y+z=1.  

Michael Friendly	Internet: friendly at (NeXTmail  
Psychology Department
York University		Voice: 416 736-5118
4700 Keele Street
Toronto, ONT  M3J 1P3 CANADA


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