<p>如果安装了pdflatex和imagemagick,则可以将数据帧导出为tex,使用pdflatex将其转换为pdf文件,然后使用imagemagick将pdf转换为png:</p>
<pre><code>import pandas as pd
import numpy as np
import subprocess
df = pd.DataFrame({'d': [1., 1., 1., 2., 2., 2.],
'c': np.tile(['a', 'b', 'c'], 2),
'v': np.arange(1., 7.)})
filename = 'out.tex'
pdffile = 'out.pdf'
outname = 'out.png'
template = r'''\documentclass[preview]{{standalone}}
\usepackage{{booktabs}}
\begin{{document}}
{}
\end{{document}}
'''
with open(filename, 'wb') as f:
f.write(template.format(df.to_latex()))
subprocess.call(['pdflatex', filename])
subprocess.call(['convert', '-density', '300', pdffile, '-quality', '90', outname])
</code></pre>
<p><img src="https://i.stack.imgur.com/nd93b.png" alt="enter image description here"/></p>
<p>如果安装<a href="http://phantomjs.org/" rel="noreferrer">phantomjs</a>和imagemagick,您可以
将DataFrame导出为HTML,然后使用phantomjs将HTML转换为png,并使用imagemagick裁剪结果:</p>
<pre><code>import pandas as pd
import numpy as np
import subprocess
df = pd.DataFrame({'d': [1., 1., 1., 2., 2., 2.],
'c': np.tile(['a', 'b', 'c'], 2),
'v': np.arange(1., 7.)})
filename = '/tmp/out.html'
outname = '/tmp/out.png'
cropname = '/tmp/cropped.png'
with open(filename, 'wb') as f:
f.write(df.to_html())
rasterize = '/path/to/phantomjs/examples/rasterize.js'
subprocess.call(['phantomjs', rasterize, filename, outname])
subprocess.call(['convert', outname, '-trim', cropname])
</code></pre>
<p><img src="https://i.stack.imgur.com/Vuw3w.png" alt="enter image description here"/></p>