Hi John, There is some info here:
http://www.kitware.com/source/home/post/32 It doesn't answer all the questions you asked but it is a decent reference. vtkOverlappingAMR implements a somewhat strict Berger-Colella style AMR hierarchy: * Refinement ratio across levels is constant * Each block at levels > 0 need to be covered 100% by one parent block of previous level * Some other restriction about what happens at the boundary that I forget So it won't do what you want. You can directly use vtkUniformGridAMR, which does not impose any restrictions. Most filters should work for this class - there just wouldn't be any specialized filters such as the dual-grid contour / clip ones for the vtkOverlappingAMR. Best, -berk On Wed, Jun 10, 2015 at 5:40 PM, Biddiscombe, John A. <[email protected]> wrote: > Dear list, > > I would like to generate some AMR data structures from custom data and > filters, but I’m having trouble locating information about the > format/relationships of AMR blocks. The wiki contains old outdated > references to the heirarchicalbox structures and not to the overlapping and > non overlapping AMR formats. > > Specifically, I’d like to know if each level of AMR boxes must always > have a fixed refinement level wrt to the level above, or whether I can > refine arbitrarily (i.e. Have a root box of resolution x and sub boxes with > different subdivision ratios at the same level). Also, the overlapping AMR > dataset examples I’ve looked at seem to use an oct tree style decomposition > where each node must be subdivided along mid planes, can I use a pure > BSPtree where every node is subdivided along any axis at any point on the > axis and still maintain a non overlapping amr dataset? > > The vtkAMRInformation documentation consists only of > > Refinement ratio between AMR levels > Grid spacing for each level > The file block index for each block > parent child information, if requested > > > But does the refinement ratio have to be constant for each level? > Most of the paraview filters appear to be greyed out for > vtkNonOverlappingAMR data, whereas the Overlapping appears to have support > for certain operations like contouring and slicing – is it the case that > only nonoverlapping datasets are supported for these operations. > > If there is detailed info anywhere, could someone please send me a link. > > Thanks > > JB > > _______________________________________________ > Powered by www.kitware.com > > Visit other Kitware open-source projects at > http://www.kitware.com/opensource/opensource.html > > Please keep messages on-topic and check the ParaView Wiki at: > http://paraview.org/Wiki/ParaView > > Search the list archives at: http://markmail.org/search/?q=ParaView > > Follow this link to subscribe/unsubscribe: > http://public.kitware.com/mailman/listinfo/paraview > >
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