The cellMarkers is different before and after the inversion process AND inversion mesh setting about gimli HOT 2 CLOSED

You are right: internally, the cell markers (that define the inversion regions) are renumbered in the inversion process according to the inversion settings:

• background (or fixed) regions are removed from the inversion mesh
• cells in single regions obtain the same marker so that the model vector value is mapped to the entire region
• other cells are numbered in ascending order according to the region numbers
  This is needed to display the inversion result properly. We should clarify this, maybe best in the region tutorial
  https://www.pygimli.org/_tutorials_auto/3_inversion/plot_8-regionWise.html

Up to now, we only set one mesh, and its region markers define the behaviour. The inversion mesh is a submesh of this and the forward mesh is a (p or h) refined version of it. This is also the case for you.

One could, however, override the inversion mesh, but a connection to the forward mesh (on which forward response and Jacobian are computed) will be needed, e.g. by interpolation.

from gimli.

As there was no answer, I consider this question answered and close the issue.

from gimli.