Hi Nathan, I never really got a chance to work with the Eagle data, but I know the general layout. My suggestion would be to make an EagleFieldInfo class that just contains the stuff in the snipshot (might be worthwhile to make a class for both snipshots and snapshots). The only thing available in the snipshot files is the total mass in elements heavier than helium. It is not possible to know the distribution of mass among the heavier elements without looking at a snapshot. For the snapshots, you can know how the mass is distributed among the elements, but you can't know the ionization state of the elements without knowing the UV background (which is not in the snapshot and I think is different from what was used in OWLS so the code I wrote to calculate it for OWLS wont give the correct answers). Hope that gets you started. cheers, -G On Thu, Sep 17, 2015 at 11:57 AM, Nathan Goldbaum wrote:

Hi all,

Robert Thompson, who is working on a generic SPH FOF/halo analysis framework pointed out to me today that loading EAGLE snipshot files like the example we have is broken. See:

https://bitbucket.org/yt_analysis/yt/issues/1085/loading-eagle-snipshot-data...

Does anyone have some experience with EAGLE data to help me debug this?

Thanks!

-Nathan