[yt-users] Error in reading the hydrodynamics dataset in Ramses

[Romain Teyssier]

Hi Junhwan,

The name of your repository “rhd” suggests that you are using the radiation solver.
In this case, you must have more than 5 variables, probably 6 or more.
So you need to use :
fields = ["Density","x-velocity", "y-velocity","z-velocity",”Pressure”,”var6”,”var7”,...]).

Romain




On 20 Nov 2013, at 22:50, Junhwan Choi (최준환) <choi.junhwan at gmail.com> wrote:

> Thank you, Kearn.
> 
> I tried your suggestion that I used
> ds = load("/lustre/widow2/proj/ast031/test11_rhd_fesc=0.05/output_00048/info_00048.txt",
> fields = ["Density","x-velocity", "y-velocity",
> "z-velocity","Pressure"]).
> But, it results in the identical error message.
> I still do not know what I need to do.
> 
> Regard,
> Junhwan
> 
> 
> 
> On Wed, Nov 20, 2013 at 10:37 AM,  <k.grisdale at surrey.ac.uk> wrote:
>> Hi Junhwan
>> 
>> I think the problem you might the having is you need to specify the fields you read into yt. To do this just modify you load command to this:
>> 
>> ds = load("/lustre/widow2/proj/ast031/test11_rhd_fesc=0.05/output_00048/info_00048.txt”, fields = ["Density","x-velocity", "y-velocity", "z-velocity", "Pressure”])
>> 
>> (Assuming that you are running a 3d Simulation with NVAR set as 5)
>> 
>> Hope that helps
>> 
>> Kearn
>> 
>> 
>> On 20 Nov 2013, at 16:26, Junhwan Choi (최준환) <choi.junhwan at gmail.com> wrote:
>> 
>>> Hi yt users,
>>> 
>>> I try to make a basic visualization for the Ramses simulation using
>>> following script:
>>> ==========================
>>> from yt.mods import *
>>> 
>>> ds = load("/lustre/widow2/proj/ast031/test11_rhd_fesc=0.05/output_00048/info_00048.txt")
>>> center = [0.5, 0.5, 0.5]
>>> 
>>> pw = ProjectionPlot(ds, "x", ("deposit", "all_density"))
>>> pw.zoom(1.01)
>>> pw.save("allview")
>>> 
>>> pw = ProjectionPlot(ds, "x", "Density")
>>> pw.zoom(1.01)
>>> pw.save("allviewGas")
>>> ============================
>>> It WORKS for the particle projection (for allview) but it does not
>>> work for gas projection.
>>> 
>>> When the yt try to deal with gas dataset, I got the following error
>>> message and the script crash.
>>> You are running with the wrong number of fields.
>>> Please specify these in the load command.
>>> We are looking for 6 fields.
>>> The last set of field sizes was: [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
>>> 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
>>> 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2]
>>> Traceback (most recent call last):
>>> File "DenVis_DM_Gas.py", line 10, in <module>
>>>   pw = ProjectionPlot(ds, "x", ("gas", "Density"))
>>> File "/autofs/na3_home1/jhchoi/common/src/yt-hg/yt/visualization/plot_window.py",
>>> line 1441, in __init__
>>>   field_parameters = field_parameters)
>>> File "/autofs/na3_home1/jhchoi/common/src/yt-hg/yt/data_objects/construction_data_containers.py",
>>> line 234, in __init__
>>>   self.get_data(field)
>>> File "/autofs/na3_home1/jhchoi/common/src/yt-hg/yt/data_objects/construction_data_containers.py",
>>> line 278, in get_data
>>>   chunk_fields, "io")):
>>> File "/autofs/na3_home1/jhchoi/common/src/yt-hg/yt/utilities/parallel_tools/parallel_analysis_interface.py",
>>> line 434, in parallel_objects
>>>   for obj_id, obj in oiter:
>>> File "/autofs/na3_home1/jhchoi/common/src/yt-hg/yt/data_objects/data_containers.py",
>>> line 453, in chunks
>>>   self.get_data(fields)
>>> File "/autofs/na3_home1/jhchoi/common/src/yt-hg/yt/data_objects/data_containers.py",
>>> line 531, in get_data
>>>   fluids, self, self._current_chunk)
>>> File "/autofs/na3_home1/jhchoi/common/src/yt-hg/yt/geometry/geometry_handler.py",
>>> line 520, in _read_fluid_fields
>>>   chunk_size)
>>> File "/autofs/na3_home1/jhchoi/common/src/yt-hg/yt/frontends/ramses/io.py",
>>> line 41, in _read_fluid_selection
>>>   rv = subset.fill(content, fields, selector)
>>> File "/autofs/na3_home1/jhchoi/common/src/yt-hg/yt/frontends/ramses/data_structures.py",
>>> line 304, in fill
>>>   for level, offset in enumerate(self.domain.hydro_offset):
>>> File "/autofs/na3_home1/jhchoi/common/src/yt-hg/yt/frontends/ramses/data_structures.py",
>>> line 102, in hydro_offset
>>>   hvals = fpu.read_attrs(f, header, "=")
>>> File "/autofs/na3_home1/jhchoi/common/src/yt-hg/yt/utilities/fortran_utils.py",
>>> line 74, in read_attrs
>>>   assert(s1 == s2)
>>> AssertionError
>>> 
>>> I do not understand what is the problem since it is such a basic visualization.
>>> Since I am new for Ramses data, I may take a simple mistake.
>>> Can anyone explain what the error message means and how to resolve the problem?
>>> 
>>> Thank you in advance,
>>> Junhwan
>>> _______________________________________________
>>> yt-users mailing list
>>> yt-users at lists.spacepope.org
>>> http://lists.spacepope.org/listinfo.cgi/yt-users-spacepope.org
>>> 
>> 
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