File: nonParametricNormals.sci

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scilab-plotlib 0.41-2
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function [n]=nonParametricNormals(zu,zv)

dim=prod(size(zu));

n=[-zu(:)';
   -zv(:)';
   ones(1,dim)];

n=n*sparse([1:dim;1:dim]',1 ./sqrt(sum(n.^2,'r')));
n=matrix(n,[3 size(zu)]);

endfunction