[yt-users] loading cosmological CHANGA data

[Christine Simpson]

Hi all,

I’m trying to load a cosmological snapshot from a Changa simulation (which I believe is in the tipsy format).  Yt seems to find some of the cosmological parameters but not all of them (not the hubble constant), which messes up the units.  See below.  There is some discussion of cosmology parameters and tipsy format in the docs, but I did not understand it.  Can anyone with experience loading this format give me some pointers?

Thanks
Christine

In [1]: pf = load('agora_1e11q_l13.000400')
yt : [INFO     ] 2016-11-03 15:17:47,253 Parameters: current_time              = 1.61048087203e+23 s
yt : [INFO     ] 2016-11-03 15:17:47,253 Parameters: domain_dimensions         = [2 2 2]
yt : [INFO     ] 2016-11-03 15:17:47,254 Parameters: domain_left_edge          = [-0.5 -0.5 -0.5]
yt : [INFO     ] 2016-11-03 15:17:47,255 Parameters: domain_right_edge         = [ 0.5  0.5  0.5]
yt : [INFO     ] 2016-11-03 15:17:47,256 Parameters: cosmological_simulation   = 1.0
yt : [INFO     ] 2016-11-03 15:17:47,256 Parameters: current_redshift          = -1.48991929905e-13
yt : [INFO     ] 2016-11-03 15:17:47,256 Parameters: omega_lambda              = 0.728
yt : [INFO     ] 2016-11-03 15:17:47,256 Parameters: omega_matter              = 0.272
yt : [INFO     ] 2016-11-03 15:17:47,256 Parameters: hubble_constant           = 1.89812815754e-06

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