def tag_positions(tag_frames):
			pos_dict= {}
			for (key, val) in tag_frames.iteritems():
				pos_dict[key] = dot(val.body.pose, val._bpose)[0:3,3]

			pos_array = zeros((len(tag_frames),3))
			for t in _humans_tags(1.741):
				pos_array[t['HumansId']-1,:] = pos_dict[t['HumansName']]
			return pos_array
	def tagsTest(self):
		def convert_to_array(tags):
			t = zeros((len(tags),3))
			for tag in tags:
				t[tag['HumansId']-1,:] = tag["Position"][:]
			return t
		self.assertListsAlmostEqual(convert_to_array(_humans_tags(1.741)),
		[[ 0.2150135, -0.0386502,  0.       ],
	           [-0.0431768, -0.0386502,  0.       ],
	           [ 0.1152542, -0.0386502,  0.0531005],
	           [ 0.1152542, -0.0386502, -0.0531005],
	           [ 0.       , -0.4340313,  0.0433509],
	           [ 0.       , -0.4221925,  0.050489 ],
	           [ 0.       ,  0.       ,  0.076604 ],
	           [ 0.0471811,  0.0637206,  0.1213477],
	           [ 0.2150135, -0.0386502,  0.       ],
	           [-0.0431768, -0.0386502,  0.       ],
	           [ 0.1152542, -0.0386502, -0.0531005],
	           [ 0.1152542, -0.0386502,  0.0531005],
	           [ 0.       , -0.4340313, -0.0433509],
	           [ 0.       , -0.4221925, -0.050489 ],
	           [ 0.       ,  0.       , -0.076604 ],
	           [ 0.0471811,  0.0637206, -0.1213477],
	           [ 0.2122279,  0.       ,  0.       ],
	           [ 0.1831532,  0.170618 ,  0.       ],
	           [-0.0915766,  0.0525782,  0.2127595],
	           [ 0.       , -0.2816938,  0.0367351],
	           [ 0.       , -0.2668953,  0.0576271],
	           [ 0.       , -0.1899431,  0.       ],
	           [-0.0915766,  0.0525782, -0.2127595],
	           [ 0.       , -0.2816938, -0.0367351],
	           [ 0.       , -0.2668953, -0.0576271],
	           [ 0.       , -0.1899431,  0.       ],
	           [ 0.0915766,  0.241999 ,  0.       ],
	           [ 0.       ,  0.2428695,  0.       ]])

		self.assertListsAlmostEqual(convert_to_array(_humans_tags(0.)),
		[[ 0.    , -0.    ,  0.    ],
	           [-0.    , -0.    ,  0.    ],
	           [ 0.    , -0.    ,  0.    ],
	           [ 0.    , -0.    , -0.    ],
	           [ 0.    , -0.    ,  0.    ],
	           [ 0.    , -0.    ,  0.    ],
	           [ 0.    ,  0.    ,  0.    ],
	           [ 0.    ,  0.    ,  0.    ],
	           [ 0.    , -0.    ,  0.    ],
	           [-0.    , -0.    ,  0.    ],
	           [ 0.    , -0.    , -0.    ],
	           [ 0.    , -0.    ,  0.    ],
	           [ 0.    , -0.    , -0.    ],
	           [ 0.    , -0.    , -0.    ],
	           [ 0.    ,  0.    ,  0.    ],
	           [ 0.    ,  0.    , -0.    ],
	           [ 0.    ,  0.    ,  0.    ],
	           [ 0.    ,  0.    ,  0.    ],
	           [-0.    ,  0.    , -0.0127],
	           [ 0.    , -0.    ,  0.    ],
	           [ 0.    , -0.    ,  0.    ],
	           [ 0.    , -0.    ,  0.    ],
	           [-0.    ,  0.    ,  0.0127],
	           [ 0.    , -0.    , -0.    ],
	           [ 0.    , -0.    , -0.    ],
	           [ 0.    , -0.    ,  0.    ],
	           [ 0.    ,  0.    ,  0.    ],
	           [ 0.    ,  0.    ,  0.    ]])