[Numpy-discussion] ANN: numarray-1.4.1

Todd Miller jmiller at stsci.edu
Fri Oct 28 06:28:17 CDT 2005


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.

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

Release Notes for numarray-1.4.1

II. BUGS FIXED / CLOSED

1339713        segfault when comparing string-array to self

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

Release Notes for numarray-1.4.0

I. ENHANCEMENTS

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1236392     Outdated web link in announcements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

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-1.3.x


WHERE
-----------

Numarray-1.4.0 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://www.stsci.edu/resources/software_hardware/numarray

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-1.4.0 requires Python 2.2.2 or greater.  


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 at stsci.edu






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