[Gnuplot-info] 2 dimensional plot of Yield surface in Deviatoric Plane

[Shahed R. <sha...@ya...>]

Hi All,
I want to draw two dimensional plot of Yield Surface in Deviatoric Plane or pi plane.It is easier to plot in 2 dimensional plane by Excel easily.But facing problem to draw in deviatoric plane.
 
Any idea will be appreciatable.
 
Regards,
Rana