[yt-users] reading RAMSES files - missing cosmological_simulation flag?

[Rok Roskar]

aha, no you're right nothing else needs to happen as far as I know - I'm
used to gasoline and some habits die hard... ;)

On Fri, 2011-08-05 at 11:39 -0400, Matthew Turk wrote:
> Hi Rok,
> 
> Ah, my fault on that.  I've swapped back; please verify if you could.
> The conversion factors for density and length and velocity are all
> grabbed from the info*.txt file; does an additional conversion step
> need to be applied?
> 
> -Matt
> 
> On Fri, Aug 5, 2011 at 11:30 AM, Rok Roskar <roskar at physik.uzh.ch> wrote:
> > hi matt,
> >
> > thanks for the fix! works better now.
> >
> > Another issue - unless I'm somehow reading this wrong - is that the
> > redshift is interpreted incorrectly (or rather, it appears that redshift
> > and expansion factor have been swapped):
> >
> > yt : [INFO     ] 2011-08-05 17:17:14,961 Parameters: current_redshift
> > = 0.499963102849
> >
> > but:
> >
> >>>> pn.parameters['aexp']
> > 1.00014759949511
> >
> > this will probably mess up unit conversions, I would imagine.
> >
> > best,
> >
> > rok
> >
> > On Fri, 2011-08-05 at 09:49 -0400, Matthew Turk wrote:
> >> Hi Rok,
> >>
> >> I've pushed a fix to the tip for this; however, even after running a
> >> couple test problems in RAMSES, I was unable to determine how to
> >> definitively identify cosmological simulations from non-cosmological
> >> simulations.  I've therefore set this parameter to always be on.
> >>
> >> Please note that there are still issues with the RAMSES reader, and it
> >> may behave unexpectedly.  Sam Geen, Oliver Hahn and I have been
> >> working on them, but it has been a bit slow going the last little
> >> while.  If you have any specific suggestions or ways we could improve,
> >> we would definitely be interested in hearing them.
> >>
> >> Thanks very much,
> >>
> >> Matt
> >>
> >> On Fri, Aug 5, 2011 at 9:19 AM, Rok Roskar <roskar at physik.uzh.ch> wrote:
> >> > hi there,
> >> >
> >> > trying to read a RAMSES output from a cosmological zoom simulation, I
> >> > get the following perplexing error:
> >> >
> >> >>>> from yt.mods import *
> >> >>>> sim = load("output_00422/info_00422.txt")
> >> > output_00422/amr_00422.out00001
> >> > yt : [INFO     ] 2011-08-05 15:13:45,236 Parameters: current_time
> >> > = -2.10180018413e+16
> >> > yt : [INFO     ] 2011-08-05 15:13:45,237 Parameters: domain_dimensions
> >> > = [2 2 2]
> >> > yt : [INFO     ] 2011-08-05 15:13:45,237 Parameters: domain_left_edge
> >> > = [ 0.  0.  0.]
> >> > yt : [INFO     ] 2011-08-05 15:13:45,238 Parameters: domain_right_edge
> >> > = [ 1.  1.  1.]
> >> > yt : [ERROR    ] 2011-08-05 15:13:45,238 Missing cosmological_simulation
> >> > in parameter file definition!
> >> >
> >> >
> >> > this clearly is a cosmological simulation with the relevant parameters
> >> > specified in the info*.txt file - is something else needed?
> >> >
> >> > Thanks,
> >> >
> >> > Rok
> >> >
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