The projected COHP and COOP curves, and atom-projected DOS, can be calculated using the LOBSTER package, which is directly based on the plane-wave DFT output provided by the VASP or ABINIT, Quantum ESPRESSO.
I have made three videos for COHP Calculation Using VASP. If you discover this information to be beneficial, kindly express your support by giving it a thumbs up, leaving a comment, and sharing it with others. We appreciate your viewership.
1. How to do calculation for Crystal Orbital Hamilton Population COHP Analysis | LOBSTER Analysis
https://www.youtube.com/watch?v=7bFh4jKjW_w
2. How to download LOBSTER code for COHP Analysis
https://www.youtube.com/watch?v=20gi6LkFDUY
3. How to do pCOHP plot using OriginPro - PART 2 | Analysis of pCOHP results