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C++ Neighbors::resize方法代码示例

本文整理汇总了C++中Neighbors::resize方法的典型用法代码示例。如果您正苦于以下问题:C++ Neighbors::resize方法的具体用法?C++ Neighbors::resize怎么用?C++ Neighbors::resize使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在Neighbors的用法示例。


在下文中一共展示了Neighbors::resize方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: find_neighbors_covertree_impl

Neighbors find_neighbors_covertree_impl(RandomAccessIterator begin, RandomAccessIterator end, 
                         PairwiseCallback callback, IndexType k)
{
	timed_context context("Covertree-based neighbors search");

	typedef CoverTreePoint<RandomAccessIterator> TreePoint;
	v_array<TreePoint> points;
	for (RandomAccessIterator iter=begin; iter!=end; ++iter)
		push(points, TreePoint(iter, callback(*iter,*iter)));

	node<TreePoint> ct = batch_create(callback, points);

	v_array< v_array<TreePoint> > res;
	++k; // because one of the neighbors will be the actual query point
	k_nearest_neighbor(callback,ct,ct,res,k);

	Neighbors neighbors;
	neighbors.resize(end-begin);
	assert(end-begin==res.index);
	for (int i=0; i<res.index; ++i)
	{
		LocalNeighbors local_neighbors;
		local_neighbors.reserve(k);
		
		for (IndexType j=1; j<=k; ++j) // j=0 is the query point
		{
			// The actual query point is found as a neighbor, just ignore it
			if (res[i][j].iter_-begin==res[i][0].iter_-begin)
				continue;
			local_neighbors.push_back(res[i][j].iter_-begin);
		}
		neighbors[res[i][0].iter_-begin] = local_neighbors;
		free(res[i].elements);
	};
	free(res.elements);
	free_children(ct);
	free(points.elements);
	return neighbors;
}
开发者ID:bayda,项目名称:tapkee,代码行数:39,代码来源:neighbors.hpp


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