[yt-dev] Problem with ProjectionPlot in yt-3

[Nathan Goldbaum]

I'll have a bugfix done in a few minutes.


On Sun, Aug 31, 2014 at 8:07 PM, Brian O'Shea <bwoshea at gmail.com> wrote:

> Ah, ok - would you like me to file a bug report?
>
>
> On Sun, Aug 31, 2014 at 10:33 PM, Matthew Turk <matthewturk at gmail.com>
> wrote:
>
>> It's a bug. It is assuming that weight field is a string, but it's a
>> tuple. The behavior I think it should do is check if it's a tuple, and if
>> it is, either join with spaces or use element 1.
>> On Aug 31, 2014 9:29 PM, "Brian O'Shea" <bwoshea at gmail.com> wrote:
>>
>>> Hi folks,
>>>
>>> I am having a problem making weighted projections in yt-3.  Using the
>>> current tip, when I type this:
>>>
>>> plot = yt.ProjectionPlot(ds,'x',fields=('gas', 'density'),
>>> weight_field=None, width=(1.0,'unitary'), center=[0.5,0.5,0.5]).save()
>>>
>>> everything works fine, and I get a projection.  However, when I try this:
>>>
>>> plot = yt.ProjectionPlot(ds,'x',fields=('gas', 'density'),
>>> weight_field=('gas', 'density'), width=(1.0,'unitary'),
>>> center=[0.5,0.5,0.5]).save()
>>>
>>> I get the error:
>>>
>>>
>>> ---------------------------------------------------------------------------
>>> AttributeError                            Traceback (most recent call
>>> last)
>>> <ipython-input-4-7a90d3d7dae2> in <module>()
>>> ----> 1 plot = yt.ProjectionPlot(ds,'x',fields=('gas', 'density'),
>>> weight_field=('gas', 'density'), width=(1.0,'unitary'),
>>> center=[0.5,0.5,0.5]).save()
>>>
>>> /Users/bwoshea/Desktop/yt-3.0/src/yt-hg/yt/visualization/plot_container.pyc
>>> in save(self, name, mpl_kwargs)
>>>     464             weight = self.data_source.weight_field
>>>     465             if weight is not None:
>>> --> 466                 weight = weight.replace(' ', '_')
>>>     467         if 'Cutting' in self.data_source.__class__.__name__:
>>>     468             type = 'OffAxisSlice'
>>>
>>> AttributeError: 'tuple' object has no attribute 'replace'
>>>
>>> I would note that if I use 'density' instead of ('gas','density') for
>>> the weight_field, everything works fine.  Is this the expected behavior, or
>>> is this a bug?
>>>
>>> Thanks!
>>>
>>> --Brian
>>>
>>>
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>>>
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