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

I'll have a bugfix done in a few minutes. On Sun, Aug 31, 2014 at 8:07 PM, Brian O'Shea wrote:

Ah, ok - would you like me to file a bug report?

On Sun, Aug 31, 2014 at 10:33 PM, Matthew Turk 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" 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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