一个很棒的Matplotlib的iTerm2后端,所以你可以直接在你的终端绘图
一个很棒的Matplotlib的iTerm2后端,所以你可以直接在你的终端绘图
Python 命令行工具
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详细介绍
itermplot
An awesome iTerm2 backend for Matplotlib, so you can plot directly in your terminal.
The above is achieved with zero modifications to your Python script. For example, the above plots are generated with the following code:
import numpy as np
import matplotlib.pyplot as plt
import networkx as nx
plt.rcParams["font.size"] = 10
plt.figure(figsize=(8,3))
ax = plt.subplot(121)
x = np.arange(0,10,0.001)
ax.plot(x, np.sin(np.sinc(x)), 'r', lw=2)
ax.set_title('Nice wiggle')
ax = plt.subplot(122)
plt.tick_params(axis='both', left='off', top='off', right='off', bottom='off', labelleft='off', labeltop='off', labelright='off', labelbottom='off')
G = nx.random_geometric_graph(200, 0.125)
pos=nx.spring_layout(G)
nx.draw_networkx_edges(G, pos, alpha=0.2)
nx.draw_networkx_nodes(G, pos, node_color='r', node_size=12)
ax.set_title('Random graph')
plt.show()
Note: you need to run plt.show()
to display the figure.
Reverse video
If you use a dark background in your terminal, you can enable "reverse video" mode by adding this to your .profile
:
export ITERMPLOT=rv
TMUX support
itermplot tries to auto-detect TMUX and behave in a sane way. Vertical split panes do not work well due to a limitation with iTerm2. Luckily, horizontals do though.
Animation support
itermplot supports animation created by matplotlib animation module.
You'll need to install ImageMagick and have it on the path to use the animation support. The simpliest way to see if ImageMagick is installed and valid is to run:
$ convert -version
Version: ImageMagick 7.0.4-4 Q16 x86_64 2017-01-14 http://www.imagemagick.org
Copyright: © 1999-2017 ImageMagick Studio LLC
License: http://www.imagemagick.org/script/license.php
Features: Cipher DPC HDRI Modules
Delegates (built-in): bzlib freetype jng jpeg ltdl lzma png tiff xml zlib
To enable animation support, you need to specifying the desired number of frames in the output animation. For example, specify it before your script with:
$ ITERMPLOT_FRAMES=30 python script.py
You can also save the resulting gif file by using ITERMPLOT_OUTFILE
environment variable:
$ ITERMPLOT_FRAMES=30 ITERMPLOT_OUTFILE=out.gif python script.py
Currently animation does not support reverse video with ITERMPLOT=rv.
Configure lines
You can configure the number of lines used with the ITERMPLOT_LINES
environment variable. For example:
ITERMPLOT_LINES=5 python3 simple.py
Python 2 and Python 3 support
Now supports Python 2, even if this makes me want to cry
Installation
Using pip
Install using pip
using the command:
pip3 install itermplot
itermplot is enabled by setting MPLBACKEND
in your environment. If you use bash
, then this can be accomplished using the command:
export MPLBACKEND="module://itermplot"
Note: you can add the export
line above to your .profile
file so that itermplot is always enabled in your terminal.
Testing
To test your installation you can do the following in your iTerm2 console:
$ echo $MPLBACKEND
module://itermplot
$ python3
Python 3.5.2 (default, Oct 24 2016, 09:14:06)
[GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.38)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import matplotlib.pyplot as plt
>>> plt.plot([1,2,3])
[<matplotlib.lines.Line2D object at 0x1041f2e48>]
>>> plt.show()
You should see a plot!
Uninstall
You can disable this backend by unsetting the MPLBACKEND
environment variable.
$ unset MPLBACKEND
$ echo $MPLBACKEND
$ python3
Python 3.5.2 (default, Oct 24 2016, 09:14:06)
[GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.38)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import matplotlib.pyplot as plt
>>> plt.plot([1,2,3])
[<matplotlib.lines.Line2D object at 0x1106bdcc0>]
>>> plt.show()
To remove the package completely, run:
pip3 uninstall itermplot
Bugs
This backend is very alpha, so if you have a problem please raise an Issue on GitHub and I will try to fix it.
I also accept (and appreciate!) good patches / pull request. Thanks to garrywu, brenshanny, hbredin, zevlg for their patches so far.
Other cool things
I encourage you to check-out some of my other little projects. Lots more coming as I slowly release them...