Actually, that earlier post was a different question. There I was comparing HopFinder and HaloFinder. Stephen clarified that for me that these two calculate mass differently.
Here I am comparing HaolProfiler to itself. Let me know if my question is confusing.
-----Original Message----- From: firstname.lastname@example.org on behalf of Matthew Turk Sent: Mon 11/30/2009 11:54 AM To: Discussion of the yt analysis package Subject: Re: [yt-users] HaloProfiler vs sum_mass_in_sphere.py
You wrote to the list a week ago asking an almost identical question:
and Stephen answered you:
The same answer applies here.
On Mon, Nov 30, 2009 at 9:48 AM, Agarwal, Shankar email@example.com wrote:
Hi, I ran HaloProfiler on HaloAnalysis.out and here is the data for the first halo...
# id center center center RadiusMpc TotalMassMsun 0000 0.169329105 0.144388856 0.8246570556 3.1986507886 1.07530961369e+15
Then I ran sum_mass_in_sphere.py with the above center and radius ...
from yt.mods import * fn = "RedshiftOutput0002" pf = load(fn) sp = pf.h.sphere([0.169329105,0.144388856,0.8246570556],3.1986507886/pf["mpc"]) baryon_mass, particle_mass = sp.quantities["TotalQuantity"]( ["CellMassMsun", "ParticleMassMsun"], lazy_reader=True) print "Total mass in sphere is %0.5e (gas = %0.5e / particles = %0.5e)" % \ (baryon_mass + particle_mass, baryon_mass, particle_mass)
Total mass in sphere is 1.27226e+15 (gas = 2.06890e+14 / particles = 1.06537e+15)
Let me know if the TotalMassMsun should match. Because they don't.
regards shankar KU Cosmology
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