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• Try out the latest Piwik 3.0.0 beta version : Piwik 3.0.0 is almost here !

  15 novembre 2016, par Matthieu Aubry — Uncategorized

  Dear Piwik community,

  We are excited today to announce our publicly available Piwik 3.0.0 beta 3 release. We have been been working hard behind the scenes on the new 3.0.0 release for almost one year now. We, the passionate team at Piwik, are dedicated to bringing you a new and improved Piwik experience and invite you to join our beta channel to switch to Piwik 3 today !

  Enable the beta release channel

  Ready to enjoy a much faster Piwik experience and the magic of a modern user interface ? Follow the instructions here and you can upgrade to Piwik 3.0.0 beta in just one click.

  Please note that beta versions have a risk of containing bugs so we don’t recommend to use on a production server. If you find and report a bug in a beta version, we will aim to fix it as quickly as possible.

  Premium plugins in Piwik 3

  In the Piwik Marketplace you can discover & download plugins to enrich the functionality of your Piwik, as well as themes to change the look and feel of your Piwik user interface. The Marketplace integration was much improved in this new release, most notably : you can now purchase and download Premium plugins within Piwik !

  Important changes

  The Piwik 3 upgrade comes with some important changes that may require your attention which we detail in this blog post and in the developer changelog.

  The full list of more than 150 changes can be found in the Piwik 3 beta changelogs : beta 1, beta 2, beta 3.

  What to do next

  When you use the Piwik beta channel and if you come across any issues in Piwik such as a bug, feature missing, regression… let us know on our tracker and create a new issue so we can get this sorted.

  As we are in the final days of Piwik 3 development, we are looking forward to your feedback and help testing !

  Welcome to the future of Piwik,

  Happy Analytics !

• Python matplotlib.animation [Errno 13] Permission denied

  11 février 2016, par Fishman

  I am trying to create a simple animated histogram and save it as a .mp4 using matplotlib and ffmpeg on a mac. I have already installed ffMpeg, specified the ffmpeg path, and now I am getting a permission denied error when writing to a folder in my desktop. I tried running as sudo and still get the same error. Help is much appreciated, thank you !

  Here is the code :

  df = pd.read_csv('.../data.csv')
  
  
  
  df = df.dropna()
  
  #Get list of weeks
  
  weeks = df.ot_date.unique()
  
  fig, ax = plt.subplots()
  
  
  
  data = df.intervals_filled[df['ot_date'].isin([weeks[0]])]
  
  n, bins = np.histogram( data , 20)
  
  
  
  # get the corners of the rectangles for the histogram
  
  left = np.array(bins[:-1])
  
  right = np.array(bins[1:])
  
  bottom = np.zeros(len(left))
  
  top = bottom + n
  
  nrects = len(left)
  
  
  
  # here comes the tricky part -- we have to set up the vertex and path
  
  # codes arrays using moveto, lineto and closepoly
  
  
  
  # for each rect: 1 for the MOVETO, 3 for the LINETO, 1 for the
  
  # CLOSEPOLY; the vert for the closepoly is ignored but we still need
  
  # it to keep the codes aligned with the vertices
  
  nverts = nrects*(1 + 3 + 1)
  
  verts = np.zeros((nverts, 2))
  
  codes = np.ones(nverts, int) * path.Path.LINETO
  
  codes[0::5] = path.Path.MOVETO
  
  codes[4::5] = path.Path.CLOSEPOLY
  
  verts[0::5, 0] = left
  
  verts[0::5, 1] = bottom
  
  verts[1::5, 0] = left
  
  verts[1::5, 1] = top
  
  verts[2::5, 0] = right
  
  verts[2::5, 1] = top
  
  verts[3::5, 0] = right
  
  verts[3::5, 1] = bottom
  
  
  
  barpath = path.Path(verts, codes)
  
  patch = patches.PathPatch(
  
      barpath, facecolor='green', edgecolor='yellow', alpha=0.5)
  
  ax.add_patch(patch)
  
  
  
  ax.set_xlim(left[0], right[-1])
  
  ax.set_ylim(bottom.min(), top.max()+40)
  
  ax.set_xlabel('Number of intervals/week')
  
  ax.set_ylabel('Count of CSAs')
  
  plt.rcParams['animation.ffmpeg_path'] = '/usr/local/Cellar/ffmpeg'
  
  FFwriter = animation.FFMpegWriter()
  
  
  
  def animate(i):
  
      print i
  
      # simulate new data coming in
  
      data = df.intervals_filled[df['ot_date'].isin([weeks[i-1]])]
  
      n, bins = np.histogram(data, 20)
  
      yearweek = str(weeks[i-1])
  
      year = yearweek[0:4]
  
      week = yearweek[4:]
  
      title = 'Week %(wk)s of %(yr)s' %{'wk': week, 'yr': year}
  
      ax.set_title(title)
  
      top = bottom + n
  
      verts[1::5, 1] = top
  
      verts[2::5, 1] = top
  
      return [patch, ]
  
  
  
  ani = animation.FuncAnimation(fig, animate, 53,interval=1000, repeat=False)
  
  ani.save('/Users/.../Desktop/1b.mp4', writer = FFwriter)
  
  plt.show()

  And here is the traceback :

  Traceback (most recent call last):
  
    File "/Users/Fishman1049/Desktop/reserves_histogram_timeline/python/1b_text.py", line 109, in <module>
  
      ani.save('/Users/Fishman1049/Desktop/1b', writer = FFwriter)
  
    File "/Users/Fishman1049/anaconda/lib/python2.7/site-packages/matplotlib/animation.py", line 761, in save
  
      with writer.saving(self._fig, filename, dpi):
  
    File "/Users/Fishman1049/anaconda/lib/python2.7/contextlib.py", line 17, in __enter__
  
      return self.gen.next()
  
    File "/Users/Fishman1049/anaconda/lib/python2.7/site-packages/matplotlib/animation.py", line 186, in saving
  
      self.setup(*args)
  
    File "/Users/Fishman1049/anaconda/lib/python2.7/site-packages/matplotlib/animation.py", line 176, in setup
  
      self._run()
  
    File "/Users/Fishman1049/anaconda/lib/python2.7/site-packages/matplotlib/animation.py", line 204, in _run
  
      creationflags=subprocess_creation_flags)
  
    File "/Users/Fishman1049/anaconda/lib/python2.7/subprocess.py", line 710, in __init__
  
      errread, errwrite)
  
    File "/Users/Fishman1049/anaconda/lib/python2.7/subprocess.py", line 1335, in _execute_child
  
      raise child_exception
  
  OSError: [Errno 13] Permission denied
  
  </module>

  I am running matplotlib version 1.5.1, just installed FFmpeg today using homebrew, spyder 2.3.8, python 2.7 and OS X 10.10.5. Thank you !.

• avcodec : Remove libaacplus

  24 janvier 2016, par Timothy Gu

  avcodec : Remove libaacplus
  TODO : bump minor
  It’s inferior in quality to fdk-aac and has an arguably more problematic
  
  license.
  As early as 2012, a HydrogenAudio user reported :
  > It has however one huge advantage : much better quality at low bitrates than
  
  > faac and libaacplus.
  (https://hydrogenaud.io/index.php?PHPSESSID=ckiq394pdglka0kj2fin6ij8t7&topic=95989.msg804633#msg804633)
  I myself have made a few spectrograms for a comparison of the two
  
  encoders as well. The FDK output is consistently better than the
  
  libaacplus one, in all bitrates I tested.
  libaacplus license is 3GPP + LGPLv2. 3GPP copyright notice is completely
  
  proprietory, as follows :
  > No part may be reproduced except as authorized by written permission.
  
  >
  
  > The copyright and the foregoing restriction extend to reproduction in
  
  > all media.
  
  >
  
  > © 2008, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC).
  
  >
  
  > All rights reserved.
  (The latest 26410-d00 zip from 3GPP has the same notice, but the copyright
  
  year is changed to 2015)
  The copyright part of the FDK AAC license (section 2) is a copyleft
  
  license that permits redistribution under certain conditions (and
  
  therefore the LGPL + libfdk-aac combination is not prohibited by
  
  configure) :
  > Redistribution and use in source and binary forms, with or without
  
  > modification, are permitted without payment of copyright license fees
  
  > provided that you satisfy the following conditions :
  
  >
  
  > You must retain the complete text of this software license in
  
  > redistributions of the FDK AAC Codec or your modifications thereto in
  
  > source code form.
  
  >
  
  > You must retain the complete text of this software license in the
  
  > documentation and/or other materials provided with redistributions of
  
  > the FDK AAC Codec or your modifications thereto in binary form.
  
  >
  
  > You must make available free of charge copies of the complete source
  
  > code of the FDK AAC Codec and your modifications thereto to recipients
  
  > of copies in binary form.
  
  >
  
  > The name of Fraunhofer may not be used to endorse or promote products
  
  > derived from this library without prior written permission.
  
  >
  
  > You may not charge copyright license fees for anyone to use, copy or
  
  > distribute the FDK AAC Codec software or your modifications thereto.
  
  >
  
  > Your modified versions of the FDK AAC Codec must carry prominent
  
  > notices stating that you changed the software and the date of any
  
  > change. For modified versions of the FDK AAC Codec, the term
  
  > "Fraunhofer FDK AAC Codec Library for Android" must be replaced by the
  
  > term "Third-Party Modified Version of the Fraunhofer FDK AAC Codec
  
  > Library for Android."
  

  • [DH] Changelog
  • [DH] LICENSE.md
  • [DH] configure
  • [DH] doc/general.texi
  • [DH] doc/platform.texi
  • [DH] libavcodec/Makefile
  • [DH] libavcodec/allcodecs.c
  • [DH] libavcodec/libaacplus.c