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function [idx, dist]=closestnode(node,p)
%
% [idx, dist]=closestnode(node,p)
%
% Find the closest point in a node list and return its index
% author: Qianqian Fang (q.fang at neu.edu)
%
% input:
% node: each row is an N-D node coordinate
% p: a given position in the same space
%
% output:
% idx: the index of the position in the node list that has the shortest
% Euclidean distance to the position p
% dist: the distances between p and each node
%
%
% -- this function is part of brain2mesh toolbox (http://mcx.space/brain2mesh)
% License: GPL v3 or later, see LICENSE.txt for details
%
dd=node-repmat(p,size(node,1),1);
[dist,idx]=min(sum(dd.*dd,2));
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