Plot 3Dband
1.Run genkpts.py to generate k.dat for specific plane in BZ.
2.Run addzero.py to adding 0 weight for each k-point. The output file is kout.dat
3.Combine IBZKPT and kout.dat to obtain KPOINTS.
4.Run vasp.
5.Run 3Dband.py to get 3dkpoints.dat.
6.Plot it.
7.Using 3dband_better.py to make the 3Dband better-looking.