[yt-dev] Issue #624: PR#54 broke projections in RAMSES in yt-3.0 (yt_analysis/yt)

[nickolas1]

New issue 624: PR#54 broke projections in RAMSES in yt-3.0
https://bitbucket.org/yt_analysis/yt/issue/624/pr-54-broke-projections-in-ramses-in-yt-30

nickolas1:

For revisions post-Octree diet, in projections it appears that alternating rows are shifted in alternating directions, and the shift seems to be equal to the cell size at the smallest refinement level. This is subtle if you have several levels of refinement, but it is obvious once individual cells are resolved in the image. 

Attached are two outputs of a low res single-level run using these commands:
pf = load('output_00001/info_00001.txt')
p = ProjectionPlot(pf,2,'Density')
p.save()

using revisions 559bca4 (merging PR#54) and 596e053, a few days prior to that merge. (More recent revisions show the same problem). I've used ProjectionPlot for simplicity, but plotting with a projection using to_frb shows the same thing.