The manual for Polarization Calculation is misunderstanding easily

[iduygnay]

Details

This part, says that P is along the c axis in the x, y, z cartesian coordinates. It's not clear and I misunderstood it means R1 represents x, R2 represents y. But actually, R1 R2 R3 correspond to the lattice vectors. I strongly recommend promoting this part. https://abacus.deepmodeling.com/en/latest/advanced/elec_properties/Berry_phase.html

Have you read the online manual http://abacus.deepmodeling.com/en/latest/

• [X] Yes, I have read the online manual.

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