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From: Richard Stanton <stanton@haas.berkeley.edu>
To: emacs-orgmode@gnu.org
Subject: Plotting in Python block won't over-write existing file
Date: Fri, 6 Mar 2015 10:41:48 -0800	[thread overview]
Message-ID: <D302C46F-8DBA-4FA1-A2EE-A6C06B8521FC@haas.berkeley.edu> (raw)

Here’s a sample Python code block:

#+begin_src python :results file :exports both
import matplotlib
matplotlib.use('Agg')
import matplotlib.pyplot as plt
import pandas as pd

df = pd.DataFrame({'date': [1900, 1901, 1902], 'x1' : [3, 4, 5], 'x2' : [6, 7, 9]})
df.set_index('date', inplace=True, drop=True)
df.plot()
plt.savefig('x4.png')
return 'x4.png' # return filename to org-mode
#+End_src

When I run it, the graph appears on the screen and in the named file, as desired.

However, if I go back, change one of the numbers, and rerun the block, while it claims to have run OK, the graph is not updated. I only get a new plot if I also change the file name (e.g., to x5.png). It looks like it’s refusing to over-write an existing file. Is there a reason for this, and is there a way to change this behavior?

By the way, this is with org-mode 8.3beta-884-g9ed426

Thanks.

Richard Stanton

next             reply	other threads:[~2015-03-06 18:41 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-06 18:41 Richard Stanton [this message]
2015-03-06 19:21 ` Plotting in Python block won't over-write existing file Nick Dokos
     [not found] <mailman.99.1425747630.6389.emacs-orgmode@gnu.org>
2015-03-09  4:17 ` Richard Stanton

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