mario.calc_z(Z, X)

Calculate the z intersectoral transaction coefficients matrix.

\[z = Z\,\operatorname{diag}(X)^{-1}\]

Parameters:

• Z (pandas.DataFrame) – Z intersectoral transaction flows matrix.

• X (pandas.DataFrame) – X total production vector.

Returns:

z intersectoral transaction coefficients matrix.

Return type:

pandas.DataFrame

Notes

Inverse production is computed elementwise. A zero production entry has inverse zero, so the corresponding column is set to zero.