[yt-users] yt-3.0 density gradient

Lile Wang wll9004 at gmail.com
Fri Aug 8 14:58:00 PDT 2014


Hi all,

I am just worried about the problem associated to the density gradient 
field in yt-3.0.

When I was trying to get the gradient of density field along z (actually 
any) direction, I got this error message (last few lines) when calling 
data[ 'density_gradient_z' ]:

    ~/lilew/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.pyc in
    selector(self)
         529         if sclass is None:
         530             raise YTDataSelectorNotImplemented(self._type_name)
    --> 531         self._selector = sclass(self)
         532         return self._selector
         533

    ~/lilew/yt-x86_64/src/yt-hg/yt/geometry/selection_routines.so in
    yt.geometry.selection_routines.RegionSelector.__init__
    (yt/geometry/selection_routines.c:20276)()

    RuntimeError: Error: bad Region in non-periodic domain along
    dimension 0. Region left edge = -0.01171875 code_length, Region
    right edge = 0.13671875 code_lengthDataset left edge = 0.
    0 code_length, Dataset right edge = 1.0 code_length

Similar things happen for the pressure gradient.

The data input was generated by Enzo with AMR. In comparison, it works 
well with yt-2.6, where I refer to the gradient by data[ 'gradDensityZ' ].

Any ideas are appreciated. Thanks!

Cheers,
Lile


-----------------------------------------------------------
Lile 'Patrick' Wang
Dept. of Astroph. Sci., Princeton University, NJ 08544 USA
Website     : http://www.astro.princeton.edu/~lilew/ 
<http://www.astro.princeton.edu/%7Elilew/>
Tel (Mobile): +1-(734)-834-3936
Tel (GVoice): +1-(510)-926-6831
-----------------------------------------------------------

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