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size of surfnorm vectors

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lorenzo donadio
lorenzo donadio 2016-11-6
评论： lorenzo donadio 2016-11-8
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.
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Walter Roberson
Walter Roberson 2016-11-7
The vectors produced by surfnorm are not normalized. That is, they are not unit vectors, do not generally have length 1.
lorenzo donadio
lorenzo donadio 2016-11-8
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?

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Walter Roberson
Walter Roberson 2016-11-7
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 )
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lorenzo donadio
lorenzo donadio 2016-11-8
编辑：lorenzo donadio 2016-11-8
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

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