在vasp软件里面画能带结构的程序。计算能带结构要先进行自洽，再用计算好的电荷密度文件计算能带，编译band.f生成dat就是物质的能带结构图。-Software, which painting in vasp band structure of the program. Band structure calculations to conduct self-consistent, then the calculated charge density file calculated the ba