Mailman 3 May 2005 - NumPy-Discussion

InterScan NT Alert
by postmaster＠interface.ru May 5, 2005

May 5, 2005

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which module to use
by Christian Meesters May 4, 2005

May 4, 2005

Hi Numarray and Numeric are great modules. I was using them a lot in my scripts. But now the time has come that I would like to write a somewhat bigger application and perhaps even need to write extensions for one of the numerical modules or Scipy. Now, I'm wondering which module to choose: Numarray (my preferred choice so far), Numpy, or "Numeric3"? How far is the latter grown with respect to the other two? How soon will it replace Numpy in SciPy releases? How long will all three co-exist, when will the merger be finished? How long will Numarray and Numpy be supported once Numeric3 "is ready"? Squeezed into one question: What is the state of the art and how can people like me (at the borderline between users and developers) plan ahead? I know that some of these questions are hard if not impossible to answer, but this was really a burning issue to me, since after all the discussions here on the list I am a little clueless. TIA Cheers Christian

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patch for Debian libc bug "feclearexcept() error on CPUs with SSE"
by Andrew Straw May 3, 2005

May 3, 2005

Hi all, Not of interest to most, and you'll probably know it you need it: Debian users users of P4 machines using the atlas3-sse2 package may be interested in a set of .debs which fix the "feclearexcept() error on CPUs with SSE" bug [1] The .debs generated are available here: http://www.its.caltech.edu/~astraw/coding.html 1. http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=279294

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A numarray bug? can not get help on array attributes
by Nadav Horesh May 3, 2005

May 3, 2005

>>> import numarray as N >>> a = N.array((2.3, 4.3)) >>> N.__version__ '1.3.1' >>> help(a.stdev) Traceback (most recent call last): File "<pyshell#10>", line 1, in -toplevel- help(a.stdev) AttributeError: 'NumArray' object has no attribute 'stdev' >>> help(a.stddev) Traceback (most recent call last): File "<pyshell#11>", line 1, in -toplevel- help(a.stddev) File "/usr/local/lib/python2.4/site.py", line 328, in __call__ return pydoc.help(*args, **kwds) File "/usr/local/lib/python2.4/pydoc.py", line 1647, in __call__ self.help(request) File "/usr/local/lib/python2.4/pydoc.py", line 1691, in help else: doc(request, 'Help on %s:') File "/usr/local/lib/python2.4/pydoc.py", line 1475, in doc pager(title % desc + '\n\n' + text.document(object, name)) File "/usr/local/lib/python2.4/pydoc.py", line 297, in document if inspect.isroutine(object): return self.docroutine(*args) File "/usr/local/lib/python2.4/pydoc.py", line 1226, in docroutine if object.im_self: File "/usr/local/lib/python2.4/site-packages/numarray/generic.py", line 537, in __nonzero__ raise RuntimeError("An array doesn't make sense as a truth value. Use any(a) or all(a).") RuntimeError: An array doesn't make sense as a truth value. Use any(a) or all(a). >>> help(a.sum) Traceback (most recent call last): File "<pyshell#12>", line 1, in -toplevel- help(a.sum) File "/usr/local/lib/python2.4/site.py", line 328, in __call__ return pydoc.help(*args, **kwds) File "/usr/local/lib/python2.4/pydoc.py", line 1647, in __call__ self.help(request) File "/usr/local/lib/python2.4/pydoc.py", line 1691, in help else: doc(request, 'Help on %s:') File "/usr/local/lib/python2.4/pydoc.py", line 1475, in doc pager(title % desc + '\n\n' + text.document(object, name)) File "/usr/local/lib/python2.4/pydoc.py", line 297, in document if inspect.isroutine(object): return self.docroutine(*args) File "/usr/local/lib/python2.4/pydoc.py", line 1226, in docroutine if object.im_self: File "/usr/local/lib/python2.4/site-packages/numarray/generic.py", line 537, in __nonzero__ raise RuntimeError("An array doesn't make sense as a truth value. Use any(a) or all(a).") RuntimeError: An array doesn't make sense as a truth value. Use any(a) or all(a). >>> Nadav.

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numarray-1.3 manual
by Todd Miller May 2, 2005

May 2, 2005

There's a new release of the numarray manual (1.3) on Source Forge here: http://sourceforge.net/project/showfiles.php?group_id=1369 The manual has new documentation on the Ufunc code generation API (used for porting scipy.special) as well as a number of corrections from Steven Walton, Rory Yorke, Russell Owen, and Olivier Bornet, and others. Thank you all for your efforts. Windows users may also notice numarray-1.3.1 binaries are now available. The new binaries are equivalent to numnarray-1.3.0 so there's no reason to upgrade if you already have 1.3.0. Regards, Todd

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