<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hi all,<div class=""><br class=""></div><div class="">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?</div><div class=""><br class=""></div><div class="">Thanks</div><div class="">Christine</div><div class=""><br class=""></div><div class=""><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo; color: rgb(206, 121, 36);" class=""><span style="font-variant-ligatures: no-common-ligatures; color: #35a327" class="">In [</span><span style="font-variant-ligatures: no-common-ligatures; color: #2de621" class=""><b class="">1</b></span><span style="font-variant-ligatures: no-common-ligatures; color: #35a327" class="">]: </span><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class="">pf = load(</span><span style="font-variant-ligatures: no-common-ligatures" class="">'agora_1e11q_l13.000400'</span><span style="font-variant-ligatures: no-common-ligatures; color: #000000" class="">)</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">yt : [INFO ] 2016-11-03 15:17:47,253 Parameters: current_time = 1.61048087203e+23 s</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">yt : [INFO ] 2016-11-03 15:17:47,253 Parameters: domain_dimensions = [2 2 2]</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">yt : [INFO ] 2016-11-03 15:17:47,254 Parameters: domain_left_edge = [-0.5 -0.5 -0.5]</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">yt : [INFO ] 2016-11-03 15:17:47,255 Parameters: domain_right_edge = [ 0.5 0.5 0.5]</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">yt : [INFO ] 2016-11-03 15:17:47,256 Parameters: cosmological_simulation = 1.0</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">yt : [INFO ] 2016-11-03 15:17:47,256 Parameters: current_redshift = -1.48991929905e-13</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">yt : [INFO ] 2016-11-03 15:17:47,256 Parameters: omega_lambda = 0.728</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">yt : [INFO ] 2016-11-03 15:17:47,256 Parameters: omega_matter = 0.272</span></div><div style="margin: 0px; font-size: 11px; line-height: normal; font-family: Menlo;" class=""><span style="font-variant-ligatures: no-common-ligatures" class="">yt : [INFO ] 2016-11-03 15:17:47,256 Parameters: hubble_constant = 1.89812815754e-06</span></div></div><div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class=""></span></div></body></html>