[lammps-users] ave/spatial error

Hi,

The following command produces the following error.

fix 4 droplet ave/spatial 5 100000 500000 y 0.5 0.2 density/number norm all file density.profile
ERROR: Use of fix ave/spatial with undefined lattice

The the error documentation says “A lattice must be defined to use fix ave/spatial with units = lattice.”. But I am not using “units” here I am
using “norm”.

Thanks
SD

Norm has nothing to do with units. Did you mean to use the "units"
keyword? The default for units is lattice, so unless you change
it or define a lattice, you'll get an error.

Steve

I haven’t used the keyword “units”. Neither did I define a lattice nor I tried to change it.
I create my own datafile. Could this possibly a bug?

I think the point is that the default for "units" is "lattice", which
requires a lattice to be defined. If you don't want to do that, you have
to specify "units box" or "units reduced".

Hope this helps,

Lutz

That solves the problem. Thank you!

SD