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  Hi Matt,
  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.
  shankar
  -----Original Message----- From: yt-users-bounces@lists.spacepope.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
  Hi Shankar,
  You wrote to the list a week ago asking an almost identical question:...
  and Stephen answered you:...
  The same answer applies here.
  -Matt
  On Mon, Nov 30, 2009 at 9:48 AM, Agarwal, Shankar sagarwal@ku.edu wrote:
  Hi, I ran HaloProfiler on HaloAnalysis.out and here is the data for the first halo...
  # id center[0] center[1] center[2] 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" print "Total mass in sphere is %0.5e (gas = %0.5e / particles = %0.5e)" % \ (baryon_mass + particle_mass, baryon_mass, particle_mass)
  And got...
  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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