def i_segment_radial_dist(pos, tree):
'''Return an iterator of radial distances of tree segments to a given point
The radial distance is the euclidian distance between the mid-point of
the segment and the point in question.
Parameters:
pos: origin to which disrances are measured. It must have at least 3
components. The first 3 components are (x, y, z).
tree: tree of raw data rows.
'''
return tr.imap_val(lambda s: mm.segment_radial_dist(s, pos), tr.isegment(tree))
def i_segment_radial_dist(pos, tree):
'''Return an iterator of radial distances of tree segments to a given point
The radial distance is the euclidian distance between the mid-point of
the segment and the point in question.
Parameters:
pos: origin to which disrances are measured. It must have at least 3
components. The first 3 components are (x, y, z).
tree: tree of raw data rows.
'''
return tr.imap_val(lambda s: mm.segment_radial_dist(s, pos),
tr.isegment(tree))
def test_segment_radial_dist():
seg = ((11,11,11), (33, 33, 33))
nt.assert_almost_equal(segment_radial_dist(seg, (0,0,0)),
point_dist((0,0,0), (22,22,22)))
def _rad_dist(segment):
'''Capture pos and invoke radial distance calculation'''
return mm.segment_radial_dist(segment, pos)
