Mailman 3 March 2001 - NumPy-Discussion

simple array help?
by Pete Shinners 17 Sep '01

17 Sep '01

i have a simple array with floating values >>> print a array([ 0. , 0.2, 0.4, 0.6, 0.8]) what i need to do is change each index into another dimension with 3 indices. hmm, kind of confusing, an example will explain better >>> b = array(zip(a,a,a)) >>> print b array([[ 0. , 0. , 0. ], [ 0.2, 0.2, 0.2], [ 0.4, 0.4, 0.4], [ 0.6, 0.6, 0.6], [ 0.8, 0.8, 0.8]]) ok, this does the job, but once i start using large arrays, the back-n-forth conversion between arrays and python lists is costing me quite a bit. is there a way i can reshape the array this way without the call to python's 'zip'? (no, 'map' doesn't count either) i've tried much fooling with NewAxis, resize, and friends. but either i haven't stumbled upon the correct combination or i'm not trying the correct tools. i'd like to keep this as quick as possible, so hopefully it can be done without anything too elaborate. thanks (doh, sorry for the previous distutils related post... hit the wrong mailing list)

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Numpy install problems
by Michael D. Risser 27 Jul '01

27 Jul '01

When attempting to install Numeric 17.0 with Python 1.5.2 and Distutils 1.0 on Red Hat 7.0, I get the following error after issuing the command 'python setup.py install' Traceback (innermost last): File "setup.py", line 15, in ? vs = map(string.atoi, v.groups()) AttributeError: 'None' object has no attribute 'groups' This error occurs regardless of whether or not I am root. I have also tried uninstalling the Red Hat Python packages and installing all from source, but I get the same error. Any help would be appreciated. Thanks.

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[Q]Best way for an array operation?
by Daehyok Shin 04 May '01

04 May '01

What is the best Numpy way for the following work? for i in range(len(x)): if x[i] > 0: y[i] = v[i] z[i] = u[i]+2 Daehyok Shin (Peter)

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For Python 6.1b2 you need a new Pyfort
by Paul F. Dubois 03 May '01

03 May '01

There is a new Pyfort release 6.3 that lets Pyfort work with Python 6.1b2. Please get it from http://sourceforge.net/projects/pyfortran if you are using 6.1b2. This Pyfort will work just fine with any Python version it used to work with.

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Update to Numeric home page
by Paul F. Dubois 31 Mar '01

31 Mar '01

The Numeric home page http://pfdubois.com/numeric has been updated to include: a. New HTML and PDF version of the documentation b. New Happydoc-generated documentation for the modules, using the new Happydoc. c. Description of and link to Scientific Python. d. Navigation buttons and a hit counter. numpy.sourceforge.net still exists and links to this page. The "Homepage" button on the project page goes directly to it. I moved the contents to a web site I control so that I can work on it more easily -- sourceforge sites are hard to work on due to security. This site is hosted by Yahoo and seems to perform well. Like any site, it can be down, but I think it is down less than SF.

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RE: Scientific Python 2.2
by Paul F. Dubois 30 Mar '01

30 Mar '01

You're linked now on the home page. http://pfdubois.com/numpy. I think I misspelled it in my previous message.

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Numeric 19.0.0 available
by Paul F. Dubois 28 Mar '01

28 Mar '01

Numeric 19.0.0 is available in source form and Windows / Python 2.1b2 zip form. Thanks to Pete Shinners, the source should now compile with Python 2.0. Any developer who to makes a Numeric-19.0.0-Python-2.0.zip, I think the users would like that.

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18.4.1 and need volunteer
by Paul F. Dubois 27 Mar '01

27 Mar '01

I found that in 18.4.0 I had missed a couple of spots that needed version specs to setup. (2.1b2a requires a version argument to setup; I believe this was an error and they will fix it before 2.1 final, but for now I wanted it to work and it won't hurt as the information is not used) I need a volunteer to figure out what changes are needed to make 18.4 compile with Pythons before 2.1. I think all that is needed are some #if's in the right place and then some logic in the setup to set the appropriate macro when the python version is too early. But I don't have time to do it and the new "bug release" policy for Python will increase the number of stragglers who don't go to new versions.

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Setup scripts need work for 2.1b2
by Jack Jansen 26 Mar '01

26 Mar '01

The setup scripts need a bit of massaging for compatibility with the distutils included with Python 2.1b2, distutils now insists on version information being available. I can hack some info in, but I thought I'd best leave this to people more knowledgeable than me... -- Jack Jansen | ++++ stop the execution of Mumia Abu-Jamal ++++ Jack.Jansen(a)oratrix.com | ++++ if you agree copy these lines to your sig ++++ www.oratrix.nl/~jack | see http://www.xs4all.nl/~tank/spg-l/sigaction.htm

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Pyfort 6.3 required for Python 2.1b2
by Paul F. Dubois 24 Mar '01

24 Mar '01

Pyfort-6.3, a Python/Fortran connection tool, has been released at http://pyfortran.sourceforge.net. This version is required if you are upgrading to Python 6.1b2.

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