Surface normal in 3-D

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Erdem Aktürk
Erdem Aktürk 2023-1-14
回答： Chris 2023-2-24
How can I show the normal of surfaces in3-D plotting?
I use symbolic equations.
surface=str2sym(input("surface equation:","s"));
surface_EQ=symfun(surface,[x,y,z])
s=fimplicit3(surface_EQ,"FaceAlpha",0.6);

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回答（2 个）

Star Strider
Star Strider 2023-1-14
Although I doubt this would work with with symbolic plots without some additional coding, the surfnorm function would be worth exploring. (I have never worked with it with symbolic plots.)
Chris
Chris 2023-2-24
I haven't tested it since it seems to need a more recent version of MATLAB, but there's a tutorial here: https://au.mathworks.com/help/symbolic/find-tangent-plane-and-normal-line.html

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