matplotlib-users Mailing List for matplotlib

On 2014年07月13日, 12:05 AM, Tommy Carstensen wrote:
> To matplotlib-users,
>
> When I do this on Linux:
> from mpl_toolkits.basemap import Basemap
>
> Then I get this error:
> ImportError: No module named 'mpl_toolkits'
Sounds like it might be a problem with the particular versions of 
matplotlib and basemap; there was a change in the way we handle 
namespace packages like mpl_toolkits.
>
> I also ran apt-get, but I still get the error:
> sudo apt-get install python-mpltoolkits.basemap
>
> What am I doing wrong? I also tried to get it to work on Mac with no luck.
Lots of possibilities, so without looking to see exactly what is on each 
system (Linux and Mac), it is impossible to say what the problem is.
For both systems, one easy solution is to use Anaconda. Basemap is not 
included in the basic installation, but can be added via "conda install 
basemap". Recommended.
Eric
>
> Thanks,
> Tommy
>
> ------------------------------------------------------------------------------
> _______________________________________________
> Matplotlib-users mailing list
> Mat...@li...
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
>

Hi experts.
I have two problems:
1) plt.show() doesnt work:  When i draw simple plot doing
importnumpy asnp importmatplotlib.pyplot asplt
x =np.range(0,5,0.1);y =np.sin(x)plt.plot(x,y)
plt.show()
no picture appears.I try to do this: http://stackoverflow.com/questions/7534453/matplotlib-does-not-show-my-drawings-although-i-call-pyplot-show, but I cant save changes in the file matplotlibrc.
But, If I do:
importnumpy asnp importmatplotlib.pyplot asplt
x =np.range(0,5,0.1);y =np.sin(x)plt.plot(x,y)
plt.savefig('pppp.png')
the picture is generated and saved.2. When I try to draw a Graph (using NetworkX and Matplotlib) doing:
importnumpy asnp importmatplotlib.pyplot asplt
improt networkx as nx
x =nx.Graph(M) #M is my matrix
nx.draw(x)
plt.savefig('jjj.png')
I always get a pictule like the attached file. How can I restore my old-drawing style?
Waiting for your answer.
Thanks a lot!!

To matplotlib-users,
When I do:
cd basemap-1.0.7/examples
python3 simpletest.py
Then I get this error message:
Traceback (most recent call last):
 File "/usr/local/lib/python3.4/dist-packages/matplotlib-1.3.1-py3.4-linux-i686.egg/matplotlib/backends/backend_gtk3cairo.py",
line 32, in on_draw_event
 self._render_figure(w, h)
 File "/usr/local/lib/python3.4/dist-packages/matplotlib-1.3.1-py3.4-linux-i686.egg/matplotlib/backends/backend_gtk3cairo.py",
line 21, in _render_figure
 self.figure.draw (self._renderer)
 File "/usr/local/lib/python3.4/dist-packages/matplotlib-1.3.1-py3.4-linux-i686.egg/matplotlib/artist.py",
line 56, in draw_wrapper
 draw(artist, renderer, *args, **kwargs)
 File "/usr/local/lib/python3.4/dist-packages/matplotlib-1.3.1-py3.4-linux-i686.egg/matplotlib/figure.py",
line 1035, in draw
 func(*args)
 File "/usr/local/lib/python3.4/dist-packages/matplotlib-1.3.1-py3.4-linux-i686.egg/matplotlib/artist.py",
line 56, in draw_wrapper
 draw(artist, renderer, *args, **kwargs)
 File "/usr/local/lib/python3.4/dist-packages/matplotlib-1.3.1-py3.4-linux-i686.egg/matplotlib/axes.py",
line 2088, in draw
 a.draw(renderer)
 File "/usr/local/lib/python3.4/dist-packages/matplotlib-1.3.1-py3.4-linux-i686.egg/matplotlib/artist.py",
line 56, in draw_wrapper
 draw(artist, renderer, *args, **kwargs)
 File "/usr/local/lib/python3.4/dist-packages/matplotlib-1.3.1-py3.4-linux-i686.egg/matplotlib/collections.py",
line 719, in draw
 return Collection.draw(self, renderer)
 File "/usr/local/lib/python3.4/dist-packages/matplotlib-1.3.1-py3.4-linux-i686.egg/matplotlib/artist.py",
line 56, in draw_wrapper
 draw(artist, renderer, *args, **kwargs)
 File "/usr/local/lib/python3.4/dist-packages/matplotlib-1.3.1-py3.4-linux-i686.egg/matplotlib/collections.py",
line 279, in draw
 self._offset_position)
 File "/usr/local/lib/python3.4/dist-packages/matplotlib-1.3.1-py3.4-linux-i686.egg/matplotlib/backend_bases.py",
line 234, in draw_path_collection
 self.draw_path(gc0, path, transform, rgbFace)
 File "/usr/local/lib/python3.4/dist-packages/matplotlib-1.3.1-py3.4-linux-i686.egg/matplotlib/backends/backend_cairo.py",
line 143, in draw_path
 raise ValueError("The Cairo backend can not draw paths longer than
18980 points.")
ValueError: The Cairo backend can not draw paths longer than 18980 points.
How can I get matplotlib basemap to work as expected?
Thanks,
Tommy

Dear all,
I am having big problems to produce an eps figure with Type 1 fonts
(Times New Roman) using matplotlib.
I try to follow what it is proposed here:
http://stackoverflow.com/questions/13132194/type-1-fonts-with-log-graphs
but I get errors:
/usr/local/lib/python3.4/dist-packages/matplotlib-1.3.1-py3.4-linux-x86_64.egg/matplotlib/font_manager.py:1236:
UserWarning: findfont: Font family ['Times New Roman'] not found.
Falling back to Bitstream Vera Sans
 (prop.get_family(), self.defaultFamily[fontext]))
/usr/local/lib/python3.4/dist-packages/matplotlib-1.3.1-py3.4-linux-x86_64.egg/matplotlib/font_manager.py:1246:
UserWarning: findfont: Could not match :family=Bitstream Vera
Sans:style=normal:variant=normal:weight=normal:stretch=normal:size=14.0.
Returning /usr/share/matplotlib/mpl-data/fonts/ttf/STIXNonUniBol.ttf
 UserWarning)
It seems that Times New Roman, which is installed in my system, is not
accesible by matplotlib, as after doing:
>>> from matplotlib import font_manager
>>> font_manager.findfont('Times New Roman')
I get the same error as above.
Anyone has any idea? I am using Python 3.4.1 from Debian unstable and
Matplotlib1.3.1 compiled from source due to this bug:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=751692
Best wishes,
-- 
Francisco J. Hernández

To matplotlib-users,
When I do this on Linux:
from mpl_toolkits.basemap import Basemap
Then I get this error:
ImportError: No module named 'mpl_toolkits'
I also ran apt-get, but I still get the error:
sudo apt-get install python-mpltoolkits.basemap
What am I doing wrong? I also tried to get it to work on Mac with no luck.
Thanks,
Tommy