Release Notes for numarray-1.3.0 Numarray is an array processing package designed to efficiently manipulate large multi-dimensional arrays. Numarray is modelled after Numeric and features c-code generated from python template scripts, the capacity to operate directly on arrays in files, arrays of heterogeneous records, string arrays, and in-place operation on memory mapped files. I. ENHANCEMENTS 1. Migration of NumArray.__del__ to C (tp_dealloc). Overall performance. 2. Removal of dictionary update from array view creation improves performance of view/slice/subarray creation. This should e.g. improve the performance of wxPython sequence protocol access to Nx2 arrays. Subclasses now need to do a.flags |= numarray.generic._UPDATEDICT to ensure that dictionary based attributes are inherited by views. NumArrays no longer do this by default. 2. Modifications to support scipy.special. 3. Removal of an unnecessary getattr() from ufunc calling sequence. Ufunc performance. II. BUGS FIXED / CLOSED 1179355 average() broken in numarray 1.2.3 1167184 Floating point exception in numarray's dot() 1151892 Bug in matrixmultiply with zero size arrays 1160184 RecArray reversal 1156172 Incorect error message for shape incompatability 1155538 Incorrect error message when multiplying arrays See http://sourceforge.net/tracker/?atid=450446&group_id=1369&func=browse for more details. III. CAUTIONS This release should be backward binary compatible with numarray 1.1.1 and 1.2.3. WHERE ----------- Numarray-1.3.0 windows executable installers, source code, and manual is here: http://sourceforge.net/project/showfiles.php?group_id=1369 Numarray is hosted by Source Forge in the same project which hosts Numeric: http://sourceforge.net/projects/numpy/ The web page for Numarray information is at: http://stsdas.stsci.edu/numarray/index.html Trackers for Numarray Bugs, Feature Requests, Support, and Patches are at the Source Forge project for NumPy at: http://sourceforge.net/tracker/?group_id=1369 REQUIREMENTS ------------------------------ numarray-1.3.0 requires Python 2.2.2 or greater. Python-2.3.4 or Python-2.4.1 is recommended. AUTHORS, LICENSE ------------------------------ Numarray was written by Perry Greenfield, Rick White, Todd Miller, JC Hsu, Paul Barrett, Phil Hodge at the Space Telescope Science Institute. We'd like to acknowledge the assitance of Francesc Alted, Paul Dubois, Sebastian Haase, Chuck Harris, Tim Hochberg, Nadav Horesh, Edward C. Jones, Eric Jones, Jochen Kuepper, Travis Oliphant, Pearu Peterson, Peter Verveer, Colin Williams, Rory Yorke, and everyone else who has contributed with comments and feedback. Numarray is made available under a BSD-style License. See LICENSE.txt in the source distribution for details. -- Todd Miller jmiller@stsci.edu