Avogadro used to have a very nifty feature of ordering/sorting atoms. It appears to be gone. For example, I need to prepare VASP input and all the atoms there should be grouped. I was able to do that in Avogadro. Any chance that can be brought back or implemented? That is:
input:
C xyz
H xyz
C xyz
into
C xyz
C xyz
H xyz
I’m not quite sure what feature you’re describing. If you use the coordinate editor, you can indeed re-order atoms - just cut and paste lines.
But Avogadro2 can directly save POSCAR, etc.
Perhaps sort? Or order?..
As I said, if you save to POSCAR, it will do everything for you.
I don’t ever recall any feature that actually sorted the base coordinates. You can go to the Atom Properties window and sort by element - but that won’t change the atom index.