Example showing how to use matplotlib from a Zeppelin notebook

matplotlib-zeppelin

%pyspark

import matplotlib.pyplot as plt; plt.rcdefaults()
import numpy as np
import matplotlib.pyplot as plt
import StringIO

def show(p):
    img = StringIO.StringIO()
    p.savefig(img, format='svg')
    img.seek(0)
    print "%html <div style='width:600px'>" + img.buf + "</div>"

# Example data
people = ('Tom', 'Dick', 'Harry', 'Slim', 'Jim')
y_pos = np.arange(len(people))
performance = 3 + 10 * np.random.rand(len(people))
error = np.random.rand(len(people))

plt.barh(y_pos, performance, xerr=error, align='center', alpha=0.4)
plt.yticks(y_pos, people)
plt.xlabel('Performance')
plt.title('How fast do you want to go today?')

show(plt)

Thank you,
and one comment it may help,

I added p.clf() in the show function for clear the figure, because of without those clear function, figures are overlapped.

just a comment for Python3 users
import io instead of import StringIO
and use img.getvalue() in the following code
print("%html <div style='width:600px'>" + img.getvalue() + "</div>")

It doesn't work for me :(
This is the output:

Traceback (most recent call last):
  File "/tmp/zeppelin_pyspark.py", line 222, in <module>
    eval(compiledCode)
  File "<string>", line 14, in <module>
  File "/usr/lib/pymodules/python2.7/matplotlib/pyplot.py", line 2526, in barh
    ax = gca()
  File "/usr/lib/pymodules/python2.7/matplotlib/pyplot.py", line 803, in gca
    ax =  gcf().gca(**kwargs)
  File "/usr/lib/pymodules/python2.7/matplotlib/pyplot.py", line 450, in gcf
    return figure()
  File "/usr/lib/pymodules/python2.7/matplotlib/pyplot.py", line 423, in figure
    **kwargs)
  File "/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py", line 79, in new_figure_manager
    return new_figure_manager_given_figure(num, figure)
  File "/usr/lib/pymodules/python2.7/matplotlib/backends/backend_tkagg.py", line 87, in new_figure_manager_given_figure
    window = Tk.Tk()
  File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 1767, in __init__
    self.tk = _tkinter.create(screenName, baseName, className, interactive, wantobjects, useTk, sync, use)
TclError: no display name and no $DISPLAY environment variable

Can you please advice me what am I missing?
Thank you.
c.

+1 I have the same error
TclError: no display name and no $DISPLAY environment variable

EDIT: Resolved

import os
import matplotlib
matplotlib.use('Agg') 
os.system("export DISPLAY=:0")

With the example above I had to add:

plt.switch_backend('agg')

Otherwise I get:

RuntimeError: Invalid DISPLAY variable

Cheers,
Luca

This method seems to lag up the Zeppelin notebook, any idea why this is?

Thanks @H4ml3t

Save my time, @H4ml3t!

The size of your sample @deus42

Thank you @meniluca

Hello,
I have a zeppelin running on Ubuntu. Then access the zeppelin from a Windows machine, via Chrome.

There is a XManager running on the Windows machine, which will display Ubuntu apps like gedit, firefox by setup:
export DISPLAY=192.168.1.42:0.0

After trying all the solutions above, always hit error:
The XManager seems not connected.

TclError: no display name and no $DISPLAY environment variable

Appreciated if any advice.

Smashing, thank you very much!

awesome, saved a lot of time! Thanks!

Try

z.showplot(plt)

or

z.showmatplot(plt)