[R] how to get the plot like the attachment?

[bbslover]

http://r.789695.n4.nabble.com/file/n3060425/fig_1.png  fig. 1
http://r.789695.n4.nabble.com/file/n3060425/fig_2.png  fig. 2

I want to the picture like the above one, the origin crossover together,
while the following picture can be obtained by default and the origin is
detached, but throgut pulling the window, I can get the one like fig_1. 
Now, I want to know how to use the code to obtain directly the formation in
fig.1（orgin together）?

thanks 

kevin
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