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

[Junhwan Choi (최준환)]

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
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>>
>
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