Why the color of my 3D surf figure shows rough when the data is smooth

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Chienmin
Chienmin am 26 Feb. 2012
Hi people,
Why the color of my 3D surf figure shows rough when the data is smooth? My command is surf(S2,S1,V).
If you use the cursor, you will find the V values are actually smooth. I place my data at the link for your consideration. https://chuangsfile.egnyte.com/publicController.do?folderName=20120226&fileName=a75edcbb9cec463c
Can anybody help to have a look?

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Jan
Jan am 26 Feb. 2012
I get this figure:
What do you expect? What exactly is rough here?

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