[Scilab-users] Compute normals to 3D surface

[arctica1963]

Hi Rafael,

Xarrows() worked to generate the normals in  Scilab 6.0.1.

<http://mailinglists.scilab.org/file/t495709/Moebius2_arrows.jpg> 

Getting closer to the solution, but it gets "confused" at position (x=1.5,
y=0, z=0) where the vectors should change to inbound rather than outbound as
the surface folds as shown in the illustrative figure before. At this point
we actually see a double vector. From x=0 to -1 it should be on the "inner"
part if I'm looking at this right?

Is it possible to just show the vector arrows along say z=0 only? Hopefully
I am explaining this properly.

Thanks for the help, very informative.

Lester



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