Dear friends,
  Anybody has ever met the problem to add a legend to a figure generated by
image()? I have three variables,x,y and z.
x and y are the coordinates, and z is the third values. we can use image(x,
y, z,...) to generate a figure according to the z-values, but the problem is
the figure legend. How can the legend be added to a figure generated
by image()? Note that filled.contour() can add the figure legend
automatically, but there are some problems sometime. I want to know the
specific method for adding the legend to the figure generated by image().
 Thanks very much.

----------------------
With Kind Regards,

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Zhi Jie,Zhang ,PHD
Tel:86-21-54237149
Dept. of Epidemiology,School of Public Health,Fudan University
Address:No. 138 Yi Xue Yuan Road,Shanghai,China
Postcode:200032
Email:epistat@gmail.com
Website: www.statABC.com
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