elphick.mass\_composition.mc\_xarray.CompositionContext ======================================================= .. currentmodule:: elphick.mass_composition.mc_xarray .. autoclass:: CompositionContext :members: :special-members: __add__, __mul__ .. automethod:: __init__ .. rubric:: Attributes .. autosummary:: ~CompositionContext.ABSOLUTE ~CompositionContext.RELATIVE ~CompositionContext.NONE