mario.calc_Ea(ea, Xa)

Calculate the Ea activity-side environmental flows matrix.

\[E_a = e_a\,\operatorname{diag}(X_a)\]

Parameters:

• ea (pandas.DataFrame) – Direct environmental coefficients, with accounts on rows and activity nodes on columns.

• Xa (pandas.DataFrame) – Activity production vector. Its index must match ea.columns.

Returns:

Activity-side flows, with the same index and columns as ea.

Return type:

pandas.DataFrame