matplotlib not displaying image on Jupyter Notebook

Question

I am using ubuntu 14.04 and coding in jupyter notebook using anaconda2.7 and everything else is up to date . Today I was coding, every thing worked fine. I closed the notebook and when I reopened it, every thing worked fine except that the image was not being displayed.

%matplotlib inline
import numpy as np
import skimage
from skimage import data
from matplotlib import pyplot as plt
%pylab inline

img = data.camera()
plt.imshow(img,cmap='gray')

this is the code i am using, a really simple one but doesn't display the image

<matplotlib.image.AxesImage at 0xaf7017ac>

this is displayed in the output area please help

Graham S · Accepted Answer · 2016-09-09 17:36:49Z

42

You need to tell matplotlib to actually show the image. Add this at the end of your segment:

plt.show()

answered Sep 9, 2016 at 17:36

Graham S

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yann · Accepted Answer · 2018-07-26 00:45:42Z

17

To show image in Jupyter Notebook by matplotlib, one should use the %matplotlib inline magic command and plt.show().
As for your code, adding plt.show() after plt.imshow() expression will make the image shown.

answered Jul 26, 2018 at 0:45

yann

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jmsinusa · Accepted Answer · 2019-02-01 23:06:45Z

11

If using the inline backend, you just need to call plt.show().

If you are using the notebook backend (%matplotlib notebook), then you should call plt.figure() before plt.imshow(img). This is especially important if you wish to use interactive figures!

edited Feb 1, 2019 at 23:06

answered Oct 1, 2018 at 18:15

jmsinusa

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Sailist · Accepted Answer · 2021-01-22 06:36:41Z

1

change kernel from xpython to original python kernel

answered Jan 22, 2021 at 6:36

Sailist

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tdy · Accepted Answer · 2024-05-02 15:27:09Z

0

Open your ipython config file, or create it if it doesn't exist:

ipython profile create
cd ~
cd ~/.ipython
cd profile_default/
vim ipython_config.py

Uncomment the line containing TerminalIPythonApp.gui and remove space as shown below. Remove None and put qt5 in single quotes:

c.TerminalIPythonApp.gui = 'qt5'

Open your virtual environment folder (mine is - python_virtual_environment):

cd python_virtual_environment

Activate your venv and install qt5 in the virtual environment:

source venv/bin/activate
pip install PyQt5

Open ipython again, and it will work.

If it still doesn't work, try searching for InteractiveShellApp.gui in vim normal mode:

/InteractiveShellApp.gui

and replace None with 'qt5'.

edited May 2, 2024 at 15:27

tdy

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answered May 1, 2024 at 6:01

Kunal Kumar

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