notebook not showing matplotlib plot

[ggrrll]

Hi,

in the last days I started to have issues with my notebooks not showing some plots - I get outputs like [<matplotlib.lines.Line2D at 0x16b6dc2e8>] (similarly to #1620 )

In particular, I have a plot disappearing when I add labels such as plt.xlabel - without that it's shown regularly

I always run %matplotlib inline at the beginning of my notebooks

Any idea of what is happening?

Thanks for your support.

ps: on safari 11.0.3 and notebook 5.4.1

[ggrrll]

ok, it seems that this problem disappears when I comment (do not run)

from IPython.core.interactiveshell import InteractiveShell
InteractiveShell.ast_node_interactivity = "all"

( which I actually really like, as I don't have to print(my_out) at every line ...anyways )

... any idea if there is a conflict there and how to avoid it?

Thanks

[junhaowww]

Hi. I like to set it "all". Finally, I found that you can put a semicolon after "plt.show()"......... That's great.

[ggrrll]

ok,

plt.show(); seem to solve the issue (for now) – thanks @junhaowww !

[ggrrll]

well,

apparently plt.show(); doesn't seem to work always...no idea what's going on...

[junhaowww]

I see. You can add ; to the last line of codes. For example:

1. normal case

a = 1
b = 1
# do plotting
plt.show();

1. special case

a = 1
b = 1
# do plotting
plt.show()
# if plt.show() is not on the last line
a = 2;       # like this

[ggrrll]

as soon as I add other plotting commands such as plt.xlabel(my_label) no plot is shown with both
plt.show() or plt.show();
(I also tried to put plt.xlabel(my_label); which does not work either ...)

... there must be some sort of conflict with those commands and the interactiveshell...

[ggrrll]

ok, it seems to be unrelated to those shell settings. It's probably related to the matplotlib backend settings

I usually use:

%matplotlib inline
sns.set_context('notebook')
%config InlineBackend.figure_format = 'retina'

in a simple example I am working for instance,

plt.hist(my_panads_series) did not work, even with those settings disabled, while my_panads_series.hist() did ... again, no idea ...

ps: I am on mac os 10.13.4, matplotlib 2.2.2, notebook 5.4.1

[takluyver]

Unfortunately, I think this is the downside of trying to make plot displaying 'just work' - when it doesn't work, it can be pretty mystifying to figure out what's going wrong. I don't have any great ideas at the moment, sorry. :-(

[ggrrll]

@takluyver thanks anyway :) – I will update it in case I figure out something more

[nazariyv]

I cannot plot with axes as well. axes.plot() return a list with a Lines object... No idea what is going on...

[shivrajganacharya]

---

ImportError Traceback (most recent call last)
in ()
----> 1 get_ipython().magic('matplotlib inline')

/home/shree/anaconda3/envs/tensorflow/lib/python3.4/site-packages/IPython/core/interactiveshell.py in magic(self, arg_s)
2156 magic_name, _, magic_arg_s = arg_s.partition(' ')
2157 magic_name = magic_name.lstrip(prefilter.ESC_MAGIC)
-> 2158 return self.run_line_magic(magic_name, magic_arg_s)
2159
2160 #-------------------------------------------------------------------------

/home/shree/anaconda3/envs/tensorflow/lib/python3.4/site-packages/IPython/core/interactiveshell.py in run_line_magic(self, magic_name, line)
2077 kwargs['local_ns'] = sys._getframe(stack_depth).f_locals
2078 with self.builtin_trap:
-> 2079 result = fn(args,*kwargs)
2080 return result
2081

in matplotlib(self, line)

/home/shree/anaconda3/envs/tensorflow/lib/python3.4/site-packages/IPython/core/magic.py in (f, a, *k)
186 # but it's overkill for just that one bit of state.
187 def magic_deco(arg):
--> 188 call = lambda f, a, *k: f(a, *k)
189
190 if callable(arg):

/home/shree/anaconda3/envs/tensorflow/lib/python3.4/site-packages/IPython/core/magics/pylab.py in matplotlib(self, line)
98 print("Available matplotlib backends: %s" % backends_list)
99 else:
--> 100 gui, backend = self.shell.enable_matplotlib(args.gui)
101 self._show_matplotlib_backend(args.gui, backend)
102

/home/shree/anaconda3/envs/tensorflow/lib/python3.4/site-packages/IPython/core/interactiveshell.py in enable_matplotlib(self, gui)
2933 """
2934 from IPython.core import pylabtools as pt
-> 2935 gui, backend = pt.find_gui_and_backend(gui, self.pylab_gui_select)
2936
2937 if gui != 'inline':

/home/shree/anaconda3/envs/tensorflow/lib/python3.4/site-packages/IPython/core/pylabtools.py in find_gui_and_backend(gui, gui_select)
257 """
258
--> 259 import matplotlib
260
261 if gui and gui != 'auto':

ImportError: No module named 'matplotlib'

why its showing No module named 'matplotlib' for %matplotlib inline ?

[manujchandra]

Splitting matplotlib statements into multiple Jupyter input cells may cause nothing to appear. Check if all your statements are in the same cell.

[shanshiner]

multiple
Yes! Put all in one cell and the pic came out!

[lionlhy]

hi,@ggrrll, have you solved this problem yet ?
I met this problem recently when using the plt.hist() for the histgram, and the dataset read from mysql. Hoping for your reply. :)

[ggrrll]

The problem was solved after few weeks since then (no idea how), but I still left it open in case other people had similar issue ... -- we can close I guess

[alanflanders]

+1
This all worked fine just this morning and then suddenly getting an issue while working on the EDX DAT 228 course for Azure ML.

[ugurkanates]

I still does this problem , charts appear but values does not.
empty charts simply

[deichdeich]

I'm having a similar problem. When I do fig = plt.figure(), a blank figure pops up, and then I try to add things to it, and nothing happens when I do a plt.show() at the end.

[profPlum]

Hey I'm experiencing this issue still. This issue appears not to be resolved. I'm using the latest version of python and when I try to get plots it either doesn't show or gives a textual description of the plot!d

[lionlhy]

Your plot has been export successfully but without showing in jupyter. %matplotlib inline , insecting this will make it .

[rafaelgdp]

Man, this issue is not resolved... I'm facing this nonsense today!!! November 27th, 2019!! I have no idea why the plots won't show! I'm using matplotlib in a colab notebook. :/

[rafaelgdp]

I take it back. I just tried @lionlhy suggestion with the "%matplotlib inline" thing and it miraculously worked! Thanks! :P

[chourasiaankur1]

if you are using %matplotlib notebook
do use-
%matplotlib inline

[formazione]

In jupyter notebook it works, in jupiter lab it does not... why???

[danielmlow]

An issue with plt.bar() is that if there are too many bars, they are not visible. Try increasing the figure size:
plt.figure(figsize=(20,17))

or reduce x,y to see if they start appearing

or try seaborn.barplot() instead

[CBD88]

I take it back. I just tried @lionlhy suggestion with the "%matplotlib inline" thing and it miraculously worked! Thanks! :P

Where you have used "%matplotlib inline"? Writing just above the command line of google colab where i run the file "!python run_file.py" is not worked for me. What may be the solution for google colab?

[raihan010204]

My plt.xlabels and plt.ylabels is not working .may i know ??why

[fsc137]

Try putting all plotting commands in one cell, with the last command in the cell being:

plt.show()

Sometimes this is not necessary --- the plot will show regardless, but it seems to fix the problem for me.

[ihamieh]

I'm having the same issue... when I make a change of the parameters the plots wont change and when I rerun or reload... i lose all the plots on Jupyter!

[formazione]

I'm having the same issue... when I make a change of the parameters the plots wont change and when I rerun or reload... i lose all the plots on Jupyter!

what version of python are you using?

[ihamieh]

I'm having the same issue... when I make a change of the parameters the plots wont change and when I rerun or reload... i lose all the plots on Jupyter!

what version of python are you using?

I have Python 2 & 3 installed on my computer. It's showing Python 2 on the top right corner!

[Lotfey]

this link is useful, It worked for me
https://github.com/matplotlib/ipympl

[Klaviersonate]

I take it back. I just tried @lionlhy suggestion with the "%matplotlib inline" thing and it miraculously worked! Thanks! :P

Where you have used "%matplotlib inline"? Writing just above the command line of google colab where i run the file "!python run_file.py" is not worked for me. What may be the solution for google colab?

I'm having the same issue，how did you solve it，looking forward to your reply

[gengishkhan]

I got this issue in my environment. When I combine code in all cells into one. It works! But I believe that this issue is not yet solved.

[lminer]

I have this issue. Using the semicolon after plot "fixes" it, but seems like a bug if that's the workaround. I'm running jupyterlab.

[nesergen]

Mr. Lotfey is right. The link helped ( https://github.com/matplotlib/ipympl )
An addon for Jupyther must be installed.