[Matplotlib-users] Unable to display data using matplotlib

Fri Oct 14 07:42:41 EDT 2016

Andrew - you are so right ! I was using an older version and now after
having upgraded to 0.14.2 I can see a beautiful matplotlib + cartopy plot
and thanks for setting me in the right direction.

On Fri, Oct 14, 2016 at 4:57 PM, Andrew Dawson <
andrew.dawson at physics.ox.ac.uk> wrote:

> I think this is a 404 error coming from cartopy as it tries to download
> the country/state/province borders. This was a known issue in cartopy,
> which has been resolved in later releases. Which version of cartopy are you
> using? You can check with `python -c "import cartopy;
> print(cartopy.__version__)"`.
>
> On 14 October 2016 at 12:15, ashwinD12 . <winash12 at gmail.com> wrote:
>
>> Thanks for your response.
>>
>> The code as shown in that URL apparently has worked and the plot has been
>> shown. I am not trying to modify the source code and as I understand the
>> code it is using matplotlib and cartopy. So the question is there some
>> backend matplotlib setting (such as the URL you mentioned) that needs to be
>> set in order to get this to work ?
>>
>> My first understanding was since the error is related to  Tk and
>> matplotlib there is something I am not doing right such as what is
>> described here - http://matplotlib.org/examples
>> /user_interfaces/embedding_in_tk2.html ?
>>
>> Ashwin.
>>
>> On Fri, Oct 14, 2016 at 4:21 PM, Joy merwin monteiro <
>> joy.merwin at gmail.com> wrote:
>>
>>> The end of the error traceback says:
>>>
>>> "
>>>
>>> raise HTTPError(req.full_url, code, msg, hdrs, fp)
>>>   urllib.error.HTTPError: HTTP Error 404: Not Found
>>> "
>>>
>>> Looks like the code is trying to access an online resource that is not available.
>>>
>>> Don't think it has anything to do with matplotlib.
>>>
>>> Joy
>>>
>>>
>>> On Fri, Oct 14, 2016 at 11:59 AM, ashwinD12 . <winash12 at gmail.com>
>>> wrote:
>>>
>>>> Hello,
>>>>           I am using this example from this cookbook -
>>>> http://nbviewer.jupyter.org/github/unidata/notebook-gallery/
>>>> blob/master/notebooks/850mb_Temperature_Advection.ipynb
>>>>
>>>> and I get this exception when I run it -
>>>>
>>>> I am wondering whether I need to matplotlib.use('Tkagg') which I did
>>>> add but does not fix the problem.
>>>>
>>>> File "/usr/lib/python3/dist-packages/matplotlib/backends/backend_agg.py", line 474, in draw
>>>> self.figure.draw(self.renderer)File "/usr/lib/python3/dist-packages/matplotlib/artist.py", line 61, in draw_wrapper
>>>> draw(artist, renderer, *args, **kwargs)File "/usr/lib/python3/dist-packages/matplotlib/figure.py", line 1159, in draw
>>>>  func(*args)
>>>>  File "/usr/lib/python3/dist-packages/matplotlib/artist.py", line 61, in draw_wrapper
>>>>  draw(artist, renderer, *args, **kwargs)
>>>>  File "/usr/local/lib/python3.5/dist-packages/cartopy/mpl/geoaxes.py", line 355, in draw
>>>> inframe=inframe)File "/usr/lib/python3/dist-packages/matplotlib/artist.py", line 61, in draw_wrapper
>>>> draw(artist, renderer, *args, **kwargs)File "/usr/lib/python3/dist-packages/matplotlib/axes/_base.py", line 2324, in draw
>>>> a.draw(renderer)File "/usr/lib/python3/dist-packages/matplotlib/artist.py", line 61, in draw_wrapper
>>>> draw(artist, renderer, *args, **kwargs)
>>>>  File "/usr/local/lib/python3.5/dist-packages/cartopy/mpl/feature_artist.py", line 103, in draw
>>>> geoms = self._feature.intersecting_geometries(extent)File "/usr/local/lib/python3.5/dist-packages/cartopy/feature.py", line 113, in intersecting_geometriesreturn (geom for geom in self.geometries() if
>>>>  File "/usr/local/lib/python3.5/dist-packages/cartopy/feature.py", line 180, in geometries
>>>> name=self.name)
>>>>  File "/usr/local/lib/python3.5/dist-packages/cartopy/io/shapereader.py", line 246, in natural_earthreturn ne_downloader.path(format_dict)File "/usr/local/lib/python3.5/dist-packages/cartopy/io/__init__.py", line 223, in path
>>>> result_path = self.acquire_resource(target_path, format_dict)File "/usr/local/lib/python3.5/dist-packages/cartopy/io/shapereader.py", line 301, in acquire_resource
>>>> shapefile_online = self._urlopen(url)File "/usr/local/lib/python3.5/dist-packages/cartopy/io/__init__.py", line 262, in _urlopenreturn urlopen(url)File "/usr/lib/python3.5/urllib/request.py", line 163, in urlopenreturn opener.open(url, data, timeout)File "/usr/lib/python3.5/urllib/request.py", line 472, in open
>>>> response = meth(req, response)File "/usr/lib/python3.5/urllib/request.py", line 582, in http_response'http', request, response, code, msg, hdrs)File "/usr/lib/python3.5/urllib/request.py", line 504, in error
>>>> result = self._call_chain(*args)File "/usr/lib/python3.5/urllib/request.py", line 444, in _call_chain
>>>> result = func(*args)File "/usr/lib/python3.5/urllib/request.py", line 696, in http_error_302return self.parent.open(new, timeout=req.timeout)File "/usr/lib/python3.5/urllib/request.py", line 472, in open
>>>> response = meth(req, response)
>>>>  File "/usr/lib/python3.5/urllib/request.py", line 582, in http_response'http', request, response, code, msg, hdrs)
>>>>  File "/usr/lib/python3.5/urllib/request.py", line 510, in errorreturn self._call_chain(*args)File "/usr/lib/python3.5/urllib/request.py", line 444, in _call_chain
>>>> result = func(*args)
>>>>  File "/usr/lib/python3.5/urllib/request.py", line 590, in http_error_default
>>>>   raise HTTPError(req.full_url, code, msg, hdrs, fp)
>>>>   urllib.error.HTTPError: HTTP Error 404: Not FoundTraceback (most recent call last):
>>>>  File "tempAdv.py", line 72, in <module>
>>>>  plt.show()
>>>>  File "/usr/lib/python3/dist-packages/matplotlib/pyplot.py", line 244, in showreturn _show(*args, **kw)
>>>>  File "/usr/lib/python3/dist-packages/matplotlib/backend_bases.py", line 192, in __call__
>>>>  self.mainloop()
>>>>
>>>>
>>>>  File "/usr/lib/python3/dist-packages/matplotlib/backends/backend_tkagg.py", line 74, in mainloop
>>>>
>>>>  Tk.mainloop()
>>>>
>>>>  File "/usr/lib/python3.5/tkinter/__init__.py", line 408, in mainloop
>>>> _default_root.tk.mainloop(n)
>>>>
>>>>  AttributeError: 'NoneType' object has no attribute 'tk
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> Matplotlib-users mailing list
>>>> Matplotlib-users at python.org
>>>> https://mail.python.org/mailman/listinfo/matplotlib-users
>>>>
>>>>
>>>
>>>
>>> --
>>> The best ruler, when he finishes his
>>> tasks and completes his affairs,
>>> the people say
>>> “It all happened naturally”
>>>
>>>                                          - Te Tao Ch'ing
>>>
>>
>>
>> _______________________________________________
>> Matplotlib-users mailing list
>> Matplotlib-users at python.org
>> https://mail.python.org/mailman/listinfo/matplotlib-users
>>
>>
>
>
> --
> Dr Andrew Dawson
> Atmospheric, Oceanic & Planetary Physics
> Clarendon Laboratory
> Parks Road
> Oxford OX1 3PU, UK
> Tel: +44 (0)1865 282352
> Email: andrew.dawson at physics.ox.ac.uk
> Web Site: http://www2.physics.ox.ac.uk/contacts/people/dawson
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/matplotlib-users/attachments/20161014/3895c01c/attachment-0001.html>