Dear friends,
  I have three variables ,x,y and z, and i want to get two plots:

1.three-dimensionel plot: z is the vertical axis, x and y is on the same
horizontal plane;

2.contour plot:x is the horizontal axis, and y is vertical axis, and z is
used to plot the contour line.
 I can't finish it ,anybody can help me ?
Thanks in advance.

-- 
With Kind Regards,
Zhi Jie,Zhang

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