Hi Andrea,

The "show()" command only works inside the Jupyter notebook (also known as the IPython notebook).

You should do "slc.save('/path/to/img.png')" instead, that will save the SlicePlot to disk as 'img.png'. The reason "show()" works in the example you linked to is because that part of the documentation is actually a Jupyter notebook.

More details about save() here:

http://yt-project.org/doc/visualizing/plots.html#saving-plots

-Nathan

On Mon, Apr 18, 2016 at 3:58 PM, Andrea Negri <negri.andre@gmail.com> wrote:
Hi Matthew,

that fixed the problem. However, now I'm not able to do a very simple
plot. I took the example in
http://yt-project.org/doc/examining/generic_array_data.html, put
everything in test.py and this is the result, nothing appears. Am I
doing something wrong?

Thank,
Andrea


(yt-x86_64)andrea@zen:~/Software/yt$ ipython test.py
yt : [INFO     ] 2016-04-18 22:55:38,406 Parameters: current_time
        = 0.0
yt : [INFO     ] 2016-04-18 22:55:38,406 Parameters: domain_dimensions
        = [64 64 64]
yt : [INFO     ] 2016-04-18 22:55:38,407 Parameters: domain_left_edge
        = [-1.5 -1.5 -1.5]
yt : [INFO     ] 2016-04-18 22:55:38,407 Parameters: domain_right_edge
        = [ 1.5  1.5  1.5]
yt : [INFO     ] 2016-04-18 22:55:38,407 Parameters:
cosmological_simulation   = 0.0
yt : [INFO     ] 2016-04-18 22:55:38,457 Loading field plugins.
yt : [INFO     ] 2016-04-18 22:55:38,457 Loaded angular_momentum (8 new fields)
yt : [INFO     ] 2016-04-18 22:55:38,457 Loaded astro (15 new fields)
yt : [INFO     ] 2016-04-18 22:55:38,457 Loaded cosmology (22 new fields)
yt : [INFO     ] 2016-04-18 22:55:38,458 Loaded fluid (64 new fields)
yt : [INFO     ] 2016-04-18 22:55:38,459 Loaded fluid_vector (96 new fields)
yt : [INFO     ] 2016-04-18 22:55:38,459 Loaded geometric (112 new fields)
yt : [INFO     ] 2016-04-18 22:55:38,459 Loaded local (112 new fields)
yt : [INFO     ] 2016-04-18 22:55:38,459 Loaded magnetic_field (120 new fields)
yt : [INFO     ] 2016-04-18 22:55:38,459 Loaded my_plugins (120 new fields)
yt : [INFO     ] 2016-04-18 22:55:38,460 Loaded species (122 new fields)
yt : [INFO     ] 2016-04-18 22:55:38,686 xlim = -1.500000 1.500000
yt : [INFO     ] 2016-04-18 22:55:38,686 ylim = -1.500000 1.500000
yt : [INFO     ] 2016-04-18 22:55:38,688 xlim = -1.500000 1.500000
yt : [INFO     ] 2016-04-18 22:55:38,688 ylim = -1.500000 1.500000
yt : [INFO     ] 2016-04-18 22:55:38,689 Making a fixed resolution
buffer of (('gas', 'density')) 800 by 800
<yt.visualization.plot_window.AxisAlignedSlicePlot at 0x7fdf305ac450>

On 18 April 2016 at 15:21, Matthew Turk <matthewturk@gmail.com> wrote:
> Hi Andrea,
>
> I think a simple fix would be to set:
>
> ~/.config/matplotlib/matplotlibrc
>
> to include this:
>
> backend: Agg
>
>
> That should fix it by not trying to import Qt.
>
> On Mon, Apr 18, 2016 at 6:02 AM, Andrea Negri <negri.andre@gmail.com> wrote:
>> Hi all,
>>
>> I tried to install yt using the All-in-One Installation Script. I'm
>> using Ubuntu 14.04, and I have installed the required packeges listed
>> at the beginning of the script.
>>
>> All the installation process went fine, then I sourced the activation
>> script in a new shell, and to check if everything was fine, I typed yt
>> --help, and this is the output:
>>
>> Traceback (most recent call last):
>>   File "/home/andrea/Software/yt/yt-x86_64/bin/yt", line 9, in <module>
>>     load_entry_point('yt==3.2.3', 'console_scripts', 'yt')()
>>   File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line
>> 558, in load_entry_point
>>   File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line
>> 2682, in load_entry_point
>>   File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line
>> 2355, in load
>>   File "build/bdist.linux-x86_64/egg/pkg_resources/__init__.py", line
>> 2361, in resolve
>>   File "/home/andrea/Software/yt/yt-x86_64/src/yt-hg/yt/__init__.py",
>> line 146, in <module>
>>     from yt.visualization.api import \
>>   File "/home/andrea/Software/yt/yt-x86_64/src/yt-hg/yt/visualization/api.py",
>> line 22, in <module>
>>     from .particle_plots import \
>>   File "/home/andrea/Software/yt/yt-x86_64/src/yt-hg/yt/visualization/particle_plots.py",
>> line 24, in <module>
>>     from .plot_window import \
>>   File "/home/andrea/Software/yt/yt-x86_64/src/yt-hg/yt/visualization/plot_window.py",
>> line 34, in <module>
>>     from .plot_modifications import callback_registry
>>   File "/home/andrea/Software/yt/yt-x86_64/src/yt-hg/yt/visualization/plot_modifications.py",
>> line 26, in <module>
>>     from mpl_toolkits.axes_grid1.anchored_artists import AnchoredSizeBar
>>   File "/home/andrea/Software/yt/yt-x86_64/lib/python2.7/site-packages/matplotlib-1.4.3-py2.7-linux-x86_64.egg/mpl_toolkits/axes_grid1/__init__.py",
>> line 9, in <module>
>>     from .axes_grid import Grid, ImageGrid, AxesGrid
>>   File "/home/andrea/Software/yt/yt-x86_64/lib/python2.7/site-packages/matplotlib-1.4.3-py2.7-linux-x86_64.egg/mpl_toolkits/axes_grid1/axes_grid.py",
>> line 8, in <module>
>>     import matplotlib.pyplot as plt
>>   File "/home/andrea/Software/yt/yt-x86_64/lib/python2.7/site-packages/matplotlib-1.4.3-py2.7-linux-x86_64.egg/matplotlib/pyplot.py",
>> line 109, in <module>
>>     _backend_mod, new_figure_manager, draw_if_interactive, _show = pylab_setup()
>>   File "/home/andrea/Software/yt/yt-x86_64/lib/python2.7/site-packages/matplotlib-1.4.3-py2.7-linux-x86_64.egg/matplotlib/backends/__init__.py",
>> line 32, in pylab_setup
>>     globals(),locals(),[backend_name],0)
>>   File "/home/andrea/Software/yt/yt-x86_64/lib/python2.7/site-packages/matplotlib-1.4.3-py2.7-linux-x86_64.egg/matplotlib/backends/backend_qt4agg.py",
>> line 17, in <module>
>>     from .backend_qt5agg import NavigationToolbar2QTAgg
>>   File "/home/andrea/Software/yt/yt-x86_64/lib/python2.7/site-packages/matplotlib-1.4.3-py2.7-linux-x86_64.egg/matplotlib/backends/backend_qt5agg.py",
>> line 18, in <module>
>>     from .backend_qt5 import QtCore
>>   File "/home/andrea/Software/yt/yt-x86_64/lib/python2.7/site-packages/matplotlib-1.4.3-py2.7-linux-x86_64.egg/matplotlib/backends/backend_qt5.py",
>> line 31, in <module>
>>     from .qt_compat import QtCore, QtGui, QtWidgets, _getSaveFileName,
>> __version__
>>   File "/home/andrea/Software/yt/yt-x86_64/lib/python2.7/site-packages/matplotlib-1.4.3-py2.7-linux-x86_64.egg/matplotlib/backends/qt_compat.py",
>> line 126, in <module>
>>     from PySide import QtCore, QtGui, __version__, __version_info__
>> ImportError: No module named PySide
>>
>>
>>
>> I tried different configurations, such as installing the stable and
>> the yt branch, turn on/off the scipy installation flag in
>> install_script.sh, but nothing.
>>
>> Please, do you have any suggestions?
>>
>>
>>
>> Thanks in advance,
>> Andrea
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