Generate Grd File

*.grd can be load by Material Studio, so GVasp provide the transform from CHGCAR_mag to it.

The command is:

gvasp grd [-n/--name NAME] [-d/--DenCut DENCUT]

• name parameter specify the output name of *.grd, default is vasp.grd.

• DenCut parameter specify the cutoff density (set it can decrease the size of grd file), default is 250.