ANN: pandas 0.16.1 released

[Jeff Reback]

Hello,

We are proud to announce v0.16.1 of pandas, a minor release from 0.16.0. 

This release includes a small number of API changes, several new features,

enhancements, and performance improvements along with a large number of bug fixes. 

This was a release of 7 weeks with 222 commits by 57 authors encompassing 85 issues.

We recommend that all users upgrade to this version.

What is it:

pandas is a Python package providing fast, flexible, and expressive data

structures designed to make working with “relational” or “labeled” data both

easy and intuitive. It aims to be the fundamental high-level building block for

doing practical, real world data analysis in Python. Additionally, it has the

broader goal of becoming the most powerful and flexible open source data

analysis / manipulation tool available in any language.

Highlights of this release include:

• Support for CategoricalIndex, a category based index, see here
  
• New section on how-to-contribute to *pandas*, see here
  
• Revised "Merge, join, and concatenate" documentation, including graphical examples to make it easier to understand each operations, see here
  
• New method sample for drawing random samples from Series, DataFrames and Panels. See here
  
• The default Index printing has changed to a more uniform format, see here
  
• BusinessHour datetime-offset is now supported, see here
  
• Further enhancement to the .str accessor to make string operations easier, see here
  

See the Whatsnew in v0.16.1

Documentation:
http://pandas.pydata.org/pandas-docs/stable/

Source tarballs, windows binaries are available on PyPI:

https://pypi.python.org/pypi/pandas

windows binaries are courtesy of  Christoph Gohlke and are built on Numpy 1.8

macosx wheels are courtesy of Matthew Brett

Please report any issues here:

https://github.com/pydata/pandas/issues

Thanks

The Pandas Development Team

Contributors to the 0.16.1 release

• Alfonso MHC
• Andy Hayden
• Artemy Kolchinsky
• Chris Gilmer
• Chris Grinolds
• Dan Birken
• David BROCHART
• David Hirschfeld
• David Stephens
• Dr. Leo
• Evan Wright
• Frans van Dunné
• Hatem Nassrat
• Henning Sperr
• Hugo Herter
• Jan Schulz
• Jeff Blackburne
• Jeff Reback
• Jim Crist
• Jonas Abernot
• Joris Van den Bossche
• Kerby Shedden
• Leo Razoumov
• Manuel Riel
• Mortada Mehyar
• Nick Burns
• Nick Eubank
• Olivier Grisel
• Phillip Cloud
• Pietro Battiston
• Roy Hyunjin Han
• Sam Zhang
• Scott Sanderson
• Stephan Hoyer
• Tiago Antao
• Tom Ajamian
• Tom Augspurger
• Tomaz Berisa
• Vikram Shirgur
• Vladimir Filimonov
• William Hogman
• Yasin A
• Younggun Kim
• behzad nouri
• dsm054
• floydsoft
• flying-sheep
• gfr
• jnmclarty
• jreback
• ksanghai
• lucas
• mschmohl
• ptype
• rockg
• scls19fr
• sinhrks
  

[Juan]

Hi, List experts,

I have a matplotlib problem when I tried to use a tool called HDDM, which is based on python. Some one told me that the issue is coming out of the pandas plotting tools. The error alarm appeared when I input fig = plt.figure().

I am a beginner with those tools. I would appreciate if anyone can give me any good pointers.

Thanks so much,
Juan

==================

In [8]: fig = plt.figure()
<matplotlib.figure.Figure at 0x13293890>

In [9]: ax = fig.add_subplot(111, xlabel='RT', ylabel='count',
title='RT distributions')

In [10]: for i, subj_data in data.groupby('subj_idx'):
    ...:     subj_data.rt.hist(bins=20, histtype='step', ax=ax)
    ...:     plt.savefig('hddm_demo_fig_00.pdf')

<matplotlib.figure.Figure at 0x1354cb70>
Traceback (most recent call last):

  File "<ipython-input-15-3b0b3c83094c>", line 2, in <module>
    subj_data.rt.hist(bins=20, histtype='step', ax=ax)

  File "C:\Anaconda\lib\site-packages\pandas\tools\plotting.py", line
2830, in hist_series
    raise AssertionError('passed axis not bound to passed figure')

AssertionError: passed axis not bound to passed figure

(relevant link: https://groups.google.com/forum/#!topic/hddm-users/yBeIRJaHGwo, 
it seems no one can answer)

[Juan]

Hi, List experts,

I have a plot problem when I tried to use a tool called HDDM. As HDDM is another issue, I here just post my problem with Matplotlib - someone told me that this is coming out of the pandas plotting tools. In short, the error alarm appeared when I input fig = plt.figure(). 

I am only a beginner with those stuff. I would appreciate if anyone can give me any good pointers.

Thanks so much,
Juan

==================

In [8]: fig = plt.figure()
<matplotlib.figure.Figure at 0x13293890>

In [9]: ax = fig.add_subplot(111, xlabel='RT', ylabel='count', title='RT distributions')

In [10]: for i, subj_data in data.groupby('subj_idx'):
    ...:     subj_data.rt.hist(bins=20, histtype='step', ax=ax)
    ...:     plt.savefig('hddm_demo_fig_00.pdf')

<matplotlib.figure.Figure at 0x1354cb70>
Traceback (most recent call last):

  File "<ipython-input-15-3b0b3c83094c>", line 2, in <module>
    subj_data.rt.hist(bins=20, histtype='step', ax=ax)

  File "C:\Anaconda\lib\site-packages\pandas\tools\plotting.py", line
2830, in hist_series
    raise AssertionError('passed axis not bound to passed figure')

AssertionError: passed axis not bound to passed figure

(relevant link: https://groups.google.com/forum/#!topic/hddm-users/yBeIRJaHGwo, there very few experts view and reply questions)

[Juan]

Hi, List experts,

I have a matplotlib problem when I tried to use a tool called HDDM, which is based on python. Some one told me that the issue is coming out of the pandas plotting tools. The error alarm appeared when I input fig = plt.figure().

I am a beginner with those tools. I would appreciate if anyone can give me any good pointers.

Thanks so much,
Juan

==================

In [8]: fig = plt.figure()
<matplotlib.figure.Figure at 0x13293890>

In [9]: ax = fig.add_subplot(111, xlabel='RT', ylabel='count',
title='RT distributions')

In [10]: for i, subj_data in data.groupby('subj_idx'):
    ...:     subj_data.rt.hist(bins=20, histtype='step', ax=ax)
    ...:     plt.savefig('hddm_demo_fig_00.pdf')

<matplotlib.figure.Figure at 0x1354cb70>
Traceback (most recent call last):

  File "<ipython-input-15-3b0b3c83094c>", line 2, in <module>
    subj_data.rt.hist(bins=20, histtype='step', ax=ax)

  File "C:\Anaconda\lib\site-packages\pandas\tools\plotting.py", line
2830, in hist_series
    raise AssertionError('passed axis not bound to passed figure')

AssertionError: passed axis not bound to passed figure

(relevant link: https://groups.google.com/forum/#!topic/hddm-users/yBeIRJaHGwo