On Tuesday, November 10, 2015, Erik Schnetter email@example.com wrote:
I have implemented a front-end for cell-centred Cactus AMR data.
Awesome! We'd love to have this in the public distribution of yt.
However, many Cactus simulations use vertex-centred AMR. That is, data is stored at the vertices of a grid (not in the cells), and coarse vertices are at the same locations as fine vertices.
How do I present such data to yt? Do I need to set grid coordinates differently, or is there a "vertex centred" flag?
When vertex-centred data are displayed, then I expect either a "control volume" around each vertex to have the same value, or to use e.g. linear interpolation in the cells from the respective boundaries.
We don't have good support for vertex-centered AMR data. I think Matt would have a better idea of what approaches we might take here.