Mailman 3 August 2008 - SciPy-User

WTFM!
by Joe Harrington 04 Aug '08

04 Aug '08

SciPy Documentation Marathon 2008 Status Report We are now nearing the end of the summer. We have a ton of great docstrings, a nice PDF and HTML reference guide, a new package with pages on general topics like slicing, and a glossary. We had hoped to have all the numpy docstrings in first-draft form in time for the pre-fall (1.2) release. The actual number of pages was more than double our quick goal-setting assessment, so we won't make it. As of this moment, we have: status % pages Needs editing 52 430 Being written / Changed 27 226 Needs review 18 152 Needs review (revised) 0 1 Needs work (reviewed) 0 3 Reviewed (needs proof) 2 19 Proofed 0 0 Unimportant 1531 Our current status can always be seen at: http://sd-2116.dedibox.fr/pydocweb/stats/ Definitions of the categories are also on the wiki, but "being written" is our first-draft category. So, we're just shy of halfway there, and since the goal more than doubled, we can say we have not failed our expectations. But, we haven't succeeded, either, and we certainly haven't finished. So, this being a marathon, we're not going to stop! Please join us if you haven't already for the... PRE-CONFERENCE DOC BLITZ! We can, quite realistically, get up to 60% for numpy 1.2. We've had several 8% weeks this summer and we've got several weeks to go. Stefan will merge docstrings into the beta for 1.2 on 5 August, and will continue merging from the wiki for the release candidates and final cut. However, Writing has slowed to a crawl in recent weeks. Please pitch in to help those who are still writing so we can get to 60% by release 1.2. Looking further ahead, I hope all the volunteers will continue writing for the rest of the summer and fall, so that we can put 100% decent drafts into 1.3, and a 100% reviewed set of docstrings into 1.4. Then we can turn our attention to scipy. Enough stick, here's some carrot: This is the design for this year's documentation prize, a T-shirt in Robert Kern black, designed by Teresa Jeffcott: http://physics.ucf.edu/~jh/scipyshirt-2008-2.png We'll hand these out at SciPy '08 to anyone who has written 1000 words or more (according to the stats page) or who has made an equivalent contribution in other ways (reviewing, wiki creation, etc.; Stefan and I will judge). So far, 11 contributors qualify, but several more could easily reach that goal in time. In fact, several of our volunteer writers have produced 1000 words in one week. The offer remains good through the first-draft phase, though you'll need to act quickly to get your docs into 1.2 and be recognized at the conference! If you won't be at SciPy '08 or if you qualify later, we'll mail one to you. As always, further discussion belongs on the scipy-dev mailing list, as does your request to be added to the doc wiki editors group, so head over to the doc wiki main page, established an account there, and give us a shout! WTFM, --jh--

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complex integrateion
by Gideon Simpson 04 Aug '08

04 Aug '08

Is there any extension of scipy's quadrature to complex numbers? -gideon

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interactive work with extension modules
by Steve Schmerler 04 Aug '08

04 Aug '08

Hi all I've read in the scipy and IPython archives that Python cannot reload extension modules (C and Fortran). So if I change and re-compile my extension and do >>> reload(foo) >>> foo.some_function(args) in the [i]python shell, there is no change to "foo". Even >>> del foo >>> import foo >>> foo.some_function(args) does not change the module foo in the interactive session (why?). So, I'd like to hear how people develop/test extensions interactively, then. The only thing seems to be using a script which imports foo. import foo foo.some_function(args) But here, I can't pass `args` interactively anymore. This would effectively kill all interactive work. Any thoughts? steve

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resend bounced msg
by Alan G Isaac 04 Aug '08

04 Aug '08

On Sat, 2 Aug 2008, Wes McKinney apparently wrote: > I am starting to think more big picture about developing > a substantial toolkit in numpy/scipy that would be useful > for econometricians and financial engineers (among > others), and in particular which would replace > / complement a lot of the functionality found in R and to > some extent in the toolboxes available for MATLAB (I am > decidedly anti-matlab). The pytrix component of econpy is for exactly such things. <URL:http://code.google.com/p/econpy/> I started this awhile back but then largely moved on to other things. You would be welcome to contribute to econpy/pytrix any econometrics related code. If it starts to evolve into an appropriate scikit, I will always be amenable to moving pytrix (or any part) over to the SciPy scikits. (License is MIT, which is SciPy compatible.) Cheers, Alan Isaac

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Sunperf libraries
by Richard Ellis 04 Aug '08

04 Aug '08

Hi, I am trying to get SciPy to compile on a Solaris box. I managed to get numpy to work and tell SciPy where the sunperf libs are but I cannot see where I tell SciPy that sunperf is the alias for BLAS, LINPACK etc. Your help would be gratefully received. Cheers, Rich **************************************** Richard Ellis. Centre for Ecology and Hydrology, Room 63, Mclean Building, Crowmarsh Gifford, Wallingford, Oxfordshire, OX10 8BB, UK. Tel: 01491 692571 ******************************************************************************************************* This message (and any attachments) is for the recipient only. NERC is subject to the Freedom of Information Act 2000 and the contents of this email and any reply you make may be disclosed by NERC unless it is exempt from release under the Act. Any material supplied to NERC may be stored in an electronic records management system. ******************************************************************************************************* -- This message (and any attachments) is for the recipient only. NERC is subject to the Freedom of Information Act 2000 and the contents of this email and any reply you make may be disclosed by NERC unless it is exempt from release under the Act. Any material supplied to NERC may be stored in an electronic records management system.

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Birds-of-a-feather sessions at SciPy'08
by Stéfan van der Walt 03 Aug '08

03 Aug '08

Hi all, SciPy'08 is just around the corner! We need topics for birds-of-a-feather sessions. As the name indicates, these informal meetings are aimed at bringing together people with a common interest, and are normally held in the evenings after the day's events. I've opened a page on the scipy wiki; please feel free to add your idea, or to support someone else's by adding your vote: http://www.scipy.org/SciPy2008/BoF We probably won't be able to have more than 4 sessions. Thanks to Stephen McInerney for the reminder. Cheers Stéfan

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STARPAC, other time series analysis tools for use in python/scipy
by Wes McKinney 02 Aug '08

02 Aug '08

Hello all, For the past several months I have been using numpy/scipy to do a decent amount of linear modeling, time series analysis, etc. Nothing too fancy, but have been able to put the scipy.stats.models package to good use. My code is fairly general but like most things been tailored specifically for my applications (which are primarily financial/econometric in nature), and I have put together some classes in a similar vein to the Scikits TimeSeries package. I am starting to think more big picture about developing a substantial toolkit in numpy/scipy that would be useful for econometricians and financial engineers (among others), and in particular which would replace / complement a lot of the functionality found in R and to some extent in the toolboxes available for MATLAB (I am decidedly anti-matlab). Toward that end, I am wondering if anyone knows of anything that exists in python for these purposes, the kind of stuff that is done in RATS, gretl, the MATLAB ARMAX/GARCH toolbox or financial engineering toolbox. Any suggestions about a good starting point? I have come across a smattering of code around the internet but there doesn't seem to be much cohesion in this area of research. I saw also there is an existing Fortran library, STARPAC, for regression / time series analysis which may suggest some f2py work-- doesn't look like anyone has wrapped this library yet, is this a worthwhile collection of tools? I have no Fortran / f2py experience, but am interested enough to learn. Wrapping STARPAC would probably be a pretty substantial project, maybe a worthwile future addition to scipy. Any advice here would be appreciated. Thanks, Wes McKinney

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ANN: NumPy 1.1.1
by Jarrod Millman 02 Aug '08

02 Aug '08

I'm pleased to announce the release of NumPy 1.1.1. NumPy is the fundamental package needed for scientific computing with Python. It contains: * a powerful N-dimensional array object * sophisticated (broadcasting) functions * basic linear algebra functions * basic Fourier transforms * sophisticated random number capabilities * tools for integrating Fortran code. Besides it's obvious scientific uses, NumPy can also be used as an efficient multi-dimensional container of generic data. Arbitrary data-types can be defined. This allows NumPy to seamlessly and speedily integrate with a wide-variety of databases. Numpy 1.1.1 is a bug fix release featuring major improvements in Python 2.3.x compatibility and masked arrays. For information, please see the release notes: http://sourceforge.net/project/shownotes.php?group_id=1369&release_id=617279 Thank you to everybody who contributed to this release. Enjoy, -- Jarrod Millman Computational Infrastructure for Research Labs 10 Giannini Hall, UC Berkeley phone: 510.643.4014 http://cirl.berkeley.edu/

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SciPy Conference: tentative BOF schedule?
by Stephen McInerney 01 Aug '08

01 Aug '08

Hi, Is there any tentative schedule for the BOFs yet? - what evenings are these BOFs planned for? (Tue/Wed/Thu/Fri/Sat?) - does anyone get together in the Thu/Fri lunch slots? - does anything happen on the Tue/Wed (tutorial day) evenings? All that http://conference.scipy.org/bofs currently says is "Proposed BoF sessions:- Testing - Documentation - Low-level code-wrapping and optimisation Is there anything on IC design, hardware, animation, visualization etc? Can you please update the webpage with tentative dates? Thanks, Stephen _________________________________________________________________ Time for vacation? WIN what you need- enter now! http://www.gowindowslive.com/summergiveaway/?ocid=tag_jlyhm

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Differential Algebraic Equation Solvers
by Nils Wagner 01 Aug '08

01 Aug '08

Hi all, I am looking for a python tool to solve a set of DAE's, e.g. m \ddot{x} = 2 \lambda x m \ddot{y} = 2 \lambda y x^2 + y^2 - l^2 = 0 Any pointer ? Nils

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