Regarding kd_ncloses​tpoints(tr​ee,point,n​,first_ite​r_flag)

I have run the code for

kd_nclosestpoints(tree,point,n,first_iter_flag)

but error is being given for the variable centroid in the following line:-

if(strcmp(tree.type,'leaf'))
    index_vals=tree.index;
    dist_vals=sqrt(sum((tree.centroid-point).^2));
    vector_vals=tree.centroid;
    return;
end

Please somebody upload the correct version or tell me where does the problem lie.

Thanks in advance.

[Walter Roberson]

What error is given? What does

fieldnames(tree)

show at that point?