jmiller at stsci.edu
Wed Oct 26 17:22:23 CEST 2005
Numarray is an array processing package designed to efficiently
manipulate large multi-dimensional arrays. Numarray is modeled 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.
Release Notes for numarray-1.4.0
1. Speed improvement for numarray operators. The Python level hook
mapping numarray operators onto universal functions has been moved
down to C.
2. Speed improvement for string-array comparisons, any(),
all(). String correlation is ~10x faster.
3. Better operation with py2exe to help it automatically detect the
core numarray extensions to include in an installer.
4. scipy newcore compatible lower case type names (e.g. int32 not Int32)
5. scipy newcore 'dtype' keyword and .dtypechar attribute.
II. BUGS FIXED / CLOSED
1323355 Apps fail with import_libnumarray
1315212 Infinite loop converting some scalar strings into a list
1298916 rank-0 tostring() broken
1297948 records.array fails to create empty fields
1286291 import sys missing from array_persist.py
1286168 Generic sequences in ``strings.array()``
1236392 Outdated web link in announcements
1235219 LinearAlgebraError not imported in linear_algebra
for more details.
This release should be backward binary compatible with numarray-1.3.x
Numarray-1.4.0 windows executable installers, source code, and manual is
Numarray is hosted by Source Forge in the same project which hosts
The web page for Numarray information is at:
Trackers for Numarray Bugs, Feature Requests, Support, and Patches are
at the Source Forge project for NumPy at:
numarray-1.4.0 requires Python 2.2.2 or greater.
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 at stsci.edu
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