Matt

Thanks. Indeed, setting "Parent" to the list of parents is working fine.

Cactus vertex-centred data do not look nice, as the refinement level interfaces are clearly visible.

I attach two plots, one for cell-centred AMR, the other for vertex-centred AMR. Both show r, the radial coordinate, and were produced by

p = yt.SlicePlot(ds, "z", "GRID::r")
p.set_cmap(field="all", cmap="plasma")
p.set_log("all", False)
p.set_zlim("all", 0, 2)
p.save("GRID-r.png")

Both datasets have three levels 0,1,2, where level 1 covers (almost) all of level 0, and level 2 ranges has approximate size [-20,20]^3.

-erik
Inline image 1Inline image 2

On Sat, Nov 14, 2015 at 2:50 PM, Matthew Turk <matthewturk@gmail.com> wrote:
Hi Erik,

It uses these when masking overlapping regions.  It can also
auto-detect these lists.  Boxlib also spans parents; you can see how
it operates, as it does not split parent grids.

On Sat, Nov 14, 2015 at 1:48 PM, Erik Schnetter <schnetter@gmail.com> wrote:
> What do the Parent and Children lists for AMRGridPatch do in yt? I've set up
> a grid structure without defining these entries, and things seem to be
> working fine. Would yt automatically disable certain regions of the parents
> if there are overlapping children?
>
> In Cactus's AMR structure, a refined grid does not have a single parent grid
> -- it may overlap with multiple coarser grids. How do I tell yt about this?
> Do I need to split the fine grids?
>
> -erik
>
> --
> Erik Schnetter <schnetter@gmail.com>
> http://www.perimeterinstitute.ca/personal/eschnetter/
>
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Erik Schnetter <schnetter@gmail.com> http://www.perimeterinstitute.ca/personal/eschnetter/