The Domain panel contains the parameters defining the structure size (NX, NY, and NZ) in combination with the resolution (Voxel Length), as well as the Origin parameters and Center Domain.

These options are the same as for the GrainGeo Create Options.

In general, the structure is periodic. Only if the parameters define a domain smaller than the chosen correlation length(s), periodicity cannot be achieved. That is because a bigger structure is generated and cropped to the desired size. In that case, warning messages appear in the result viewer for the affected directions. The runtime and memory requirements increase, corresponding to the needed domain size.