Mailman 3 July 2003 - SciPy-User

Solu��es de Marketing!!!
by Giselle＠scipy.com July 11, 2003

July 11, 2003

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PARTNERSHIP
by MR.JAMES UGAN July 10, 2003

July 10, 2003

FROM: JAMES UGAN E-MAIL: jamesugan(a)netscape.net THE NETHERLANDS, Dear sir, SOLICITING FOR A BUSINESS VENTURE AND PARTNERSHIP. Before I proceed, I must be very greatful to introduce myself .My name is Mr.James Ugan, a Zimbabwean.I was formerly a personal aid to one of the top ministers (minister of finnance) of robert mugabe's former government.Due to my position and closeness with the minister, I absconded with fifteen .five million united state dollars (us$15.5m). which was part of the money meant for campainning for president robert Mugabe's re-election into office under Zanu PF Party. Presently I have been able to move the funds diplomatically to a security company in Netherlands where I now reside as a refugee. MY REQUEST: As a result of my present situation as a refugee who cannot have access to own an account or accounts,I am looking for a trustworthy individual /firm to advice me in making the rightful investment as wellas to provide account(s)where the funds will be lodge into,more also we are at the interim interested in buying properties for residence as my family will be residing there and in the near future. COMMISSION/REMUNERATION: As regards your commission/remuneration,I and my immediate family have decidedto offer you 25% of the total sum and also set aside 5% for all your expenses (i.e) telephone bills,travelling expenses, hotelbills and other miscellaneous expenses. NOTE: I shall commit half of my own share of the total sum into a joint venture project preferably in the purchase of real estate or other profitable business venture.Be assured that you stand no risk of any kind as the funds in question belong to me alone. As soon as I get your consent , I will furnish you with the details and contact of the security company and a face to face meeting will be arrange in order to know each other better. I strongly believe that associating with you to emback on this and other business ventures will derive a huge success hereafter and it will be a long lasting business association. if you have any question, do not hesitate to contact me with the above telephone number and e-mail address. I also want you to know that I kept this all along,not because I am self sentered,or greedy,but for the common interest of my people. I await your anticipated co-operation. yours truly Mr. James Ugan.

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Bugs in SciPy/Numeric on Mac OS X
by Andrew Nesbit July 10, 2003

July 10, 2003

For the information of the list... I've been investigating the cause of several scipy.test(level=1) failures on my Mac OS X machine. In particular, there a few fails that are like this: ====================================================================== FAIL: check_nd (test_function_base.test_all) ---------------------------------------------------------------------- Traceback (most recent call last): File "/usr/local/lib/python/scipy_base/tests/test_function_base.py", line 42, in check_nd assert_array_equal(all(y1),[0,0,1]) File "/usr/local/lib/python/scipy_test/testing.py", line 390, in assert_array_equal assert alltrue(ravel(reduced)),\ AssertionError: Arrays are not equal: ====================================================================== FAIL: check_nd (test_function_base.test_any) ---------------------------------------------------------------------- Traceback (most recent call last): File "/usr/local/lib/python/scipy_base/tests/test_function_base.py", line 25, in check_nd assert_array_equal(any(y1),[1,1,0]) File "/usr/local/lib/python/scipy_test/testing.py", line 390, in assert_array_equal assert alltrue(ravel(reduced)),\ AssertionError: Arrays are not equal: I've tracked them down to the sometrue() and alltrue() functions in /usr/local/lib/python/Numeric/Numeric.py . It seems that the return values of these functions, given by logical_or() and logical_and(), return incorrect results. For example: >>> scipy.logical_or([0, 1, 1], [0, 1, 1]) array([ 0, 16777216, 16777216]) when the result /should/ have values of 1 in the "true" positions, and that seems to be why the tests are failing. I've submitted a bug report to the NumPy Sourceforge bug tracking system. Just letting you all know. Andrew.

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- Are you learning English?
by Martin Andrews July 8, 2003

July 8, 2003

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Re: [SciPy-user] gplt font question
by Christopher Fonnesbeck July 7, 2003

July 7, 2003

How do you make such a change from scipy? I would like to avoid having to open gnuplot to fine-tune the plots. Thanks for your help, Chris On Monday, July 7, 2003, at 01:00 PM, scipy-user-request(a)scipy.net wrote: > Hi, > > within gnuplot you can for example use something like > gnuplot> set term post enh port "Times-Roman" 20 > Terminal type set to 'postscript' > Options are 'portrait enhanced monochrome blacktext \ > dashed dashlength 1.0 linewidth 1.0 defaultplex \ > "Times-Roman" 20' > If this is not enough information please let me know > and I will cook up a small example tomorrow. > > Arnd > > > -- Christopher J. Fonnesbeck (chris at fonnesbeck dot org) GA Coop. Fish & Wildlife Research Unit, University of Georgia

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Updated version of Python 2.2.3 (Enthought Edition) now available
by David C. Morrill July 7, 2003

July 7, 2003

Just wanted to let everyone know that an updated version of Python 2.2.3 (Enthought Edition) for Windows is available at: http://www.enthought.com/python/ The main changes are several new packages: a.. MayaVi 1.2: 3D Data Visualization Tool b.. ScientificPython 2.4.3: A collection of Python modules for scientific computing c.. F2PY 2.32.225-1419: A Fortran to Python interface generator d.. ZODB3 3.1: ZODB and ZEO Object DataBase e.. Gadfly 1.0.0: An SQL Relational Database in Python f.. PySQLite 0.4.3: A Python Extension for the SQLite embedded relational database Also, nearly all of the documentation has been collected together into a single, searchable Windows Compiled Help Module (.chm) file. Enjoy! The Python guys at Enthought, Inc.

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Announcing PyQwt-3.7
by Gerard Vermeulen July 7, 2003

July 7, 2003

PyQwt-3.7 = FAST and EASY data plotting for Python and Qt. PyQwt is a set of Python bindings for the Qwt C++ class library. Qwt extends the Qt framework with widgets for scientific and engineering applications. PyQwt really shines with Numeric and/or numarray. Numeric and numarray extend Python with new data types that make Python an ideal language for numerical computing and experimentation. PyQwt requires and extends PyQt, a set of Python bindings for Qt. PyQwt runs on Windows and Unix/Linux. The home page of PyQwt has moved to http://pyqwt.sourceforge.net. New features in PyQwt-3.7: 1. PyQwt will work with either Numeric, or numarray or both (depending on the presence of Numeric and numarray during PyQwt's build). 2. PyQwt will work without Numeric and numarray (is not recommended). 3. PyQwt is compatible with the Python Command Line Interpreter or IPython, provided that the readline module is installed: Qt's event processing is scheduled by the readline library through (int)(*PyOS_InputHook)(void). 4. PyQwt is always rlcompleter-friendly, even though PyQt-3.6 and earlier are not (the dir() function has been enhanced in PyQt-3.7). 5. The module qwt.qplt is enhanced: qwt.qplt is sugar coating for the QwtPlot widget to facilitate plotting from an interpreter. 6. QwtImagePlot maps a 2-dimensional array of z-values on a QImage using a color scale. 7. New Qwt widgets: QwtDial and QwtCompass. 8. Works with PyQt-3.7, PyQt-3.6, PyQt-3.5 and PyQt-3.4. 9. Works with Qt-2.3.x, Qt-3.0.x and Qt-3.1.x. Gerard Vermeulen

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gplt font question
by Christopher Fonnesbeck July 6, 2003

July 6, 2003

Quick question to anyone familiar with gplt: How can you manipulate font size in gplt? The default axis labels are way to small for publication-quality plots. Thanks, Chris -- Christopher J. Fonnesbeck (chris at fonnesbeck dot org) GA Coop. Fish & Wildlife Research Unit, University of Georgia

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unsubscribe
by Vern Pierre July 4, 2003

July 4, 2003

unsubscribe -----Message d'origine----- De : scipy-user-request(a)scipy.net [mailto:scipy-user-request@scipy.net] Envoyé : vendredi 4 juillet 2003 19:00 À : scipy-user(a)scipy.net Objet : SciPy-user digest, Vol 1 #433 - 6 msgs Send SciPy-user mailing list submissions to scipy-user(a)scipy.net To subscribe or unsubscribe via the World Wide Web, visit http://www.scipy.net/mailman/listinfo/scipy-user or, via email, send a message with subject or body 'help' to scipy-user-request(a)scipy.net You can reach the person managing the list at scipy-user-admin(a)scipy.net When replying, please edit your Subject line so it is more specific than "Re: Contents of SciPy-user digest..." Today's Topics: 1. Fwd: scipy.signal.lfilter: memory leak fixed (Andrew Straw) 2. help for the math-challenged (Andrew Straw) 3. Re: help for the math-challenged (Andrew Straw) 4. Re: Re: SciPy-user digest, Vol 1 #430 - 4 msgs (Travis Oliphant) 5. SuperLU, UMFPACK, ... (Nils Wagner) 6. The Matrix Computation Toolbox (Nils Wagner) --__--__-- Message: 1 Date: Thu, 3 Jul 2003 18:38:31 +0200 From: Andrew Straw <andrew.straw(a)adelaide.edu.au> To: scipy-user(a)scipy.net Subject: [SciPy-user] Fwd: scipy.signal.lfilter: memory leak fixed Reply-To: scipy-user(a)scipy.net --Apple-Mail-14--513782946 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=US-ASCII; format=flowed From: Andrew Straw <astraw(a)insightscientific.com> Date: Thu Jul 3, 2003 6:31:52 PM Europe/Berlin To: scipy-user(a)scipy.net Subject: scipy.signal.lfilter: memory leak fixed Hi All, I found and fixed a memory leak when lfilter was called with initial conditions for the filter delays set in zi. Here's the patch. Please apply it to CVS. Cheers! Andrew --Apple-Mail-14--513782946 Content-Disposition: attachment; filename=lfilter_mem_leak.patch Content-Transfer-Encoding: 7bit Content-Type: application/octet-stream; x-unix-mode=0666; name="lfilter_mem_leak.patch" Index: sigtoolsmodule.c =================================================================== RCS file: /home/cvsroot/world/scipy/Lib/signal/sigtoolsmodule.c,v retrieving revision 1.9 diff -c -r1.9 sigtoolsmodule.c *** sigtoolsmodule.c 1 Feb 2003 00:10:01 -0000 1.9 --- sigtoolsmodule.c 3 Jul 2003 17:24:24 -0000 *************** *** 2135,2141 **** } else { free(vi); free(vf); ! return Py_BuildValue("(OO)",arY,arVf); } fail: --- 2135,2141 ---- } else { free(vi); free(vf); ! return Py_BuildValue("(NN)",arY,arVf); } fail: --Apple-Mail-14--513782946-- --__--__-- Message: 2 Date: Thu, 3 Jul 2003 18:37:45 +0200 Subject: [SciPy-user] help for the math-challenged From: Andrew Straw <andrew.straw(a)adelaide.edu.au> To: scipy-user(a)scipy.net Reply-To: scipy-user(a)scipy.net John Hunter wrote: >>>>>> "Andrew" == Andrew Straw <astraw(a)insightscientific.com> writes: > > Andrew> What is the "critical frequency", as mentioned in the help > Andrew> for scipy.signal.iirfilter? ("Wn -- a scalar or length-2 > Andrew> sequence giving the critical frequencies.") More > Andrew> specifically, for a 1st order filter, how is the classical > Andrew> time constant related to the critical frequency? By trial > Andrew> and error, I find 1.0/(3.19*tau*hz) works. In other > Andrew> words, this is the code I use: > > The critical frequency is the frequency at which there is 3dB of > attenuation of the signal amplitude. For a first order RC filter, > this is 1/RC = 1/tau (Hz). That's what I originally thought (and hence the question). However, my code (which you snipped out) works, which is a state I acheived only after I actually playing around with the output. Therefore, my question is not "is my code wrong?", but "why is my code right?". Then again I suppose there could be a bug in scipy and my code actually was right! Nah! Cheers! Andrew --__--__-- Message: 3 Date: Thu, 3 Jul 2003 18:39:29 +0200 Subject: [SciPy-user] Re: help for the math-challenged From: Andrew Straw <andrew.straw(a)adelaide.edu.au> To: scipy-user(a)scipy.net Reply-To: scipy-user(a)scipy.net John Hunter wrote: >>>>>> "Andrew" == Andrew Straw <astraw(a)insightscientific.com> writes: > > Andrew> What is the "critical frequency", as mentioned in the help > Andrew> for scipy.signal.iirfilter? ("Wn -- a scalar or length-2 > Andrew> sequence giving the critical frequencies.") More > Andrew> specifically, for a 1st order filter, how is the classical > Andrew> time constant related to the critical frequency? By trial > Andrew> and error, I find 1.0/(3.19*tau*hz) works. In other > Andrew> words, this is the code I use: > > The critical frequency is the frequency at which there is 3dB of > attenuation of the signal amplitude. For a first order RC filter, > this is 1/RC = 1/tau (Hz). That's what I originally thought (and hence the question). However, my code (which you snipped out) works, which is a state I acheived only after I actually playing around with the output. Therefore, my question is not "is my code wrong?", but "why is my code right?". Then again I suppose there could be a bug in scipy and my code actually was right! Nah! Cheers! Andrew --__--__-- Message: 4 Date: Thu, 03 Jul 2003 13:01:44 -0600 From: Travis Oliphant <"oliphant."@ee.byu.edu> To: scipy-user(a)scipy.net, camartin(a)snet.net Subject: Re: [SciPy-user] Re: SciPy-user digest, Vol 1 #430 - 4 msgs Reply-To: scipy-user(a)scipy.net It looks like this line will read it >>> a = io.read_array('AV56tst1.INT',lines=((0,4928),),atype='l') The problem is the last line is too short. Notice I just use the lines option to read in all but the last line. (I used wc to find out how many lines there were). Note the atype argument specifies long integer array output (instead of the default double). We should probably change the behavior here to just insert zeros in the missing columns. I will look into this too see if it makes sense with the other features. The error message is a bit cryptic. > Travis, > > Attached is the file. Re-looking at the file , because it is different > rows than columns the last line has only three elements vs. the other > lines each having 10. This is an interferometry file in ASCII. I've > stripped the headers because I know how to handle them and what I'm > going to do. Thanks for the help. > > Cliff Martin --__--__-- Message: 5 Date: Fri, 04 Jul 2003 09:54:26 +0200 From: Nils Wagner <nwagner(a)mecha.uni-stuttgart.de> To: "scipy-user(a)scipy.net" <scipy-user(a)scipy.net> Subject: [SciPy-user] SuperLU, UMFPACK, ... Reply-To: scipy-user(a)scipy.net Hi all, How do I invoke SuperLU and UMFPACK in scipy ? A small example illustrating the main features would be appreciated. Thanks in advance. Nils --__--__-- Message: 6 Date: Fri, 04 Jul 2003 10:03:18 +0200 From: Nils Wagner <nwagner(a)mecha.uni-stuttgart.de> To: scipy-dev(a)scipy.net, "scipy-user(a)scipy.net" <scipy-user(a)scipy.net> Subject: [SciPy-user] The Matrix Computation Toolbox Reply-To: scipy-user(a)scipy.net Hi all, There exists an interesting matrix computation toolbox that has been developed by Nicholas J. Higham. http://www.maths.man.ac.uk/~higham/mctoolbox/ The toolbox is distributed under the terms of the GNU General Public License (version 2 of the License, or any later version) as published by the Free Software Foundation. Maybe the features of scipy can benefit from this toolbox. However, it is a collection of Matlab m-files. Nils --__--__-- _______________________________________________ SciPy-user mailing list SciPy-user(a)scipy.net http://www.scipy.net/mailman/listinfo/scipy-user End of SciPy-user Digest

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The Matrix Computation Toolbox
by Nils Wagner July 4, 2003

July 4, 2003

Hi all, There exists an interesting matrix computation toolbox that has been developed by Nicholas J. Higham. http://www.maths.man.ac.uk/~higham/mctoolbox/ The toolbox is distributed under the terms of the GNU General Public License (version 2 of the License, or any later version) as published by the Free Software Foundation. Maybe the features of scipy can benefit from this toolbox. However, it is a collection of Matlab m-files. Nils

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