size of surfnorm vectors

how can I introduce a max length to the vectors plotted by surfnorm or at least scale them?, I cant finde the rigth documentation to do it, thanks.

[KSSV]

Can you elaborate your question. Using surfnorm you will get normals. Then what you want out of it?

[Walter Roberson]

The vectors produced by surfnorm are not normalized. That is, they are not unit vectors, do not generally have length 1.

[lorenzo donadio]

what I need is that vectors plotted by quiver or surfnorm to not have a length greater than a maximum value, but i dont want vectors smaller than that value to be scaled, is that possible?

Answer 1

[Walter Roberson]

With normalizing:

[nx, ny, nz] = surfnorm(x, y, z);
L = sqrt(nx.^2 + ny.^2 + nz.^2);
quiver3( x, y, z, nx./L, ny./L, nz./L )

[lorenzo donadio]

thanks that's very helpful, but i need vectors plotted by quiver or surfnorm to not have a length greater than a maximum value, but i dont want vectors smaller than that value to be scaled