Not sure if this is a bug

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1

So I found that lattice space doesn’t change the spacing between the atoms in a lattice, but does make the entire block of atoms repeat itself more times, I checked with image dumps using

lattice fcc 4
create_atoms 2 region wall units lattice

and

lattice fcc 4 spacing 2 2 2
create_atoms 2 region wall units lattice

using LJ units and found that the lattice constant was the same (by superimposing the image dumps), but the volume occupied by the lattice changed, not sure if this is how it’s supposed to work and I’m just confused about the definition of spacing.

~Nickhil

2

If you read the lattice doc page, it doesn't say that the
"spacing" keyword changes the lattice spacing. It is simply
a distance that is inferred from the lattice you define and
which can be used by other commands. The "spacing" option
simply lets you override the inferred value.

Steve