[yt-dev] fcoords / fwidth in yt-3.0
matthewturk at gmail.com
Tue Mar 19 04:34:42 PDT 2013
Just as a quick word of warning, John ZuHone found this bug:
The issue in a nutshell is that fcoords is scaling between 0, 1 but
not in a reliable way. I've looked into it and it seems to me that
the correct solution is the one John identified: remove the scaling
from yt/geometry/cartesian_fields.py .
Looking over the code, I believe most of the frontends are in place to
do exactly that. I'm going to issue a Pull Request for this bug to
the yt_analysis/yt-3.0 repository shortly, where I remove the scaling
and offsetting from the cartesian_fields.py file. I have verified
(and fixed) that RAMSES & Gadget are correctly setting fcoords and
fwidth, but I was hoping to get verification from NMSU-ART and ARTIO
The coordinate setting inside grid_patch is correct, so I think once
the octrees are verified, it's ready to go.
I'll update the YTEP to explicitly note that fcoords, fwidth must be
in the domain coordinates.
PS Fixing the tests -- not sure what's up with them! -- is on my
agenda for today.
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