[yt-users] Updated yt dev and now have strange plotting error

[Stephanie Tonnesen]

Hi yt-users,

I just updated my yt dev and suddenly my plotting scripts don't work.  When
I actually try and save my plot, I am told that I don't have "classic"
style available.  I am not sure where this problem is coming from, does
anyone have some advice for me?

The code commands:

ds =
yt.load("/data001/stonnes/MWtype_BPtest/DD"+loop[i]+"/DDMWtestf"+loop[i])
ds.add_field(('gas','tracer'),function=tfrac)
logs = {('index','cylindrical_r'):False}
logs = {('gas','velocity_z'):False}
logs = {('gas','velocity_x'):False}
logs = {('gas','velocity_y'):False}
logs = {('gas','tracer'):False}

ds.index
ds.field_info['gas','velocity_z'].take_log = False
ds.field_info['gas','velocity_x'].take_log = False

plot6p = yt.ProjectionPlot(ds,"z","density")
plot6p.save()

The error message:

yt : [INFO     ] 2016-06-24 12:25:04,736 Parameters:
current_time              = 0
yt : [INFO     ] 2016-06-24 12:25:04,736 Parameters:
domain_dimensions         = [256 256 256]
yt : [INFO     ] 2016-06-24 12:25:04,736 Parameters:
domain_left_edge          = [ 0.  0.  0.]
yt : [INFO     ] 2016-06-24 12:25:04,737 Parameters:
domain_right_edge         = [ 1.  1.  1.]
yt : [INFO     ] 2016-06-24 12:25:04,737 Parameters:
cosmological_simulation   = 0.0

Parsing Hierarchy :   0%|          | 0/2503 [00:00<?, ?it/s]
Parsing Hierarchy : 100%|##########| 2503/2503 [00:00<00:00, 33786.39it/s]
yt : [INFO     ] 2016-06-24 12:25:04,952 Gathering a field list (this may
take a moment.)
yt : [INFO     ] 2016-06-24 12:25:50,114 Projection completed
yt : [INFO     ] 2016-06-24 12:25:50,328 xlim = 0.000000 1.000000
yt : [INFO     ] 2016-06-24 12:25:50,328 ylim = 0.000000 1.000000
yt : [INFO     ] 2016-06-24 12:25:50,329 xlim = 0.000000 1.000000
yt : [INFO     ] 2016-06-24 12:25:50,329 ylim = 0.000000 1.000000
yt : [INFO     ] 2016-06-24 12:25:50,336 Making a fixed resolution buffer
of (('gas', 'density')) 800 by 800
yt : [INFO     ] 2016-06-24 12:25:51,408 Saving plot
DDMWtestf0000_Projection_z_density.png
Traceback (most recent call last):
  File "yt_slicesonly_allouts.py", line 29, in <module>
    plot6p.save()
  File
"/home/stonnes/yt-x86_64/src/yt-hg/yt/visualization/plot_container.py",
line 79, in newfunc
    rv = f(*args, **kwargs)
  File
"/home/stonnes/yt-x86_64/src/yt-hg/yt/visualization/plot_container.py",
line 575, in save
    names.append(v.save(n, mpl_kwargs))
  File
"/home/stonnes/yt-x86_64/src/yt-hg/yt/visualization/base_plot_types.py",
line 104, in save
    with matplotlib_style_context():
  File "/home/stonnes/yt-x86_64/lib/python2.7/contextlib.py", line 17, in
__enter__
    return self.gen.next()
  File
"/home/stonnes/yt-x86_64/lib/python2.7/site-packages/matplotlib-1.4.3-py2.7-linux-x86_64.egg/matplotlib/style/core.py",
line 86, in context
    use(name)
  File
"/home/stonnes/yt-x86_64/lib/python2.7/site-packages/matplotlib-1.4.3-py2.7-linux-x86_64.egg/matplotlib/style/core.py",
line 66, in use
    raise ValueError(msg % style)
ValueError: 'classic' not found in the style library and input is not a
valid URL or path. See `style.available` for list of available styles.

Thanks!
Stephanie
--
Dr. Stephanie Tonnesen
Alvin E. Nashman Postdoctoral Fellow
Carnegie Observatories, Pasadena, CA
stonnes at gmail.com
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