mario.calc_Ec(ec, Xc)

Calculate the Ec commodity-side environmental flows matrix.

\[E_c = e_c\,\operatorname{diag}(X_c)\]

Parameters:

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

• Xc (pandas.DataFrame) – Commodity production vector. Its index must match ec.columns.

Returns:

Commodity-side flows, with the same index and columns as ec.

Return type:

pandas.DataFrame