Version 0.8.1 (July 22, 2012)#
This release includes a few new features, performance enhancements, and over 30 bug fixes from 0.8.0. New features include notably NA friendly string processing functionality and a series of new plot types and options.
New features#
Add vectorized string processing methods accessible via Series.str (GH620)
Add option to disable adjustment in EWMA (GH1584)
Per column styles and secondary y-axis plotting (GH1559)
New datetime converters millisecond plotting (GH1599)
Add option to disable “sparse” display of hierarchical indexes (GH1538)
Series/DataFrame’s
set_index
method can append levels to an existing Index/MultiIndex (GH1569, GH1577)
Performance improvements#
Improved implementation of rolling min and max (thanks to Bottleneck !)
Add accelerated
'median'
GroupBy option (GH1358)Significantly improve the performance of parsing ISO8601-format date strings with
DatetimeIndex
orto_datetime
(GH1571)Improve the performance of GroupBy on single-key aggregations and use with Categorical types
Significant datetime parsing performance improvements
Contributors#
A total of 5 people contributed patches to this release. People with a “+” by their names contributed a patch for the first time.
Chang She
Skipper Seabold
Todd DeLuca +
Vytautas Jancauskas
Wes McKinney