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 [image: Inline image 1][image: Inline image 2] On Sat, Nov 14, 2015 at 2:50 PM, Matthew Turk 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.

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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

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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

On Sat, Nov 14, 2015 at 1:48 PM, Erik Schnetter wrote: parents this?

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Do I need to split the fine grids?

-erik

-- Erik Schnetter http://www.perimeterinstitute.ca/personal/eschnetter/

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