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

Brian O'Shea bwoshea at gmail.com
Sun Aug 31 20:07:00 PDT 2014


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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