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

1 vue (au cours des 30 derniers jours)

Chienmin le 26 Fév 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?

Jan le 26 Fév 2012

I get this figure:

What do you expect? What exactly is rough here?

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