def z_positions(self, universe):
height_indices = " ".join(universe.atoms[2::4].indices.astype(
str)) # one atom per cholesterol
z_positions = ZPositions(universe,
height_sel=f"index {height_indices}",
**self.kwargs)
z_positions.run()
return z_positions
def test_Exceptions(self, universe):
match = "height_sel contains atoms that are not present in molecules selected "
with pytest.raises(ValueError, match=match):
ZPositions(
universe=universe,
lipid_sel="name L",
height_sel="name C"
)
def z_positions(self, universe):
z_positions = ZPositions(universe, **self.kwargs)
z_positions.run()
return z_positions