Mailman 3 August 2003 - SciPy-Dev

strange error with win32 build for py21
by Jun Sung Aug. 18, 2003

Aug. 18, 2003

Dear experts: � I am getting very strange error with SciPy-0.2.0-alpha. All multiplication involving array (array*scalar) coerces fractions into 0's. I have tracked the error down to fastumath module in scipy_base. � For example: >>> import Numeric >>> x=Numeric.arange(11.) >>> x*.5 array([ 0. ,� 0.5,� 1. ,� 1.5,� 2. ,� 2.5,� 3. ,� 3.5,� 4. ,� 4.5,� 5. ]) >>> import scipy_base.fastumath >>> x*.5 array([ 0.,� 0.,� 0.,� 0.,� 0.,� 0.,� 0.,� 0.,� 0.,� 0.,� 0.]) � � Furthermore,�as seen in�"scipy_base/limits.py" , when two arrays with float typecodes are multiplied,�Python throws an ArithmeticError: Integer overflow in multiply. � Should I bother with the C code or is there an obvious clue I need to get. Thanks, in advance. /js __________________________________ Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo. http://search.yahoo.com

1 0

Re: [Scipy-chaco] ANN: Job posting -- developer position available
by delphiro Aug. 15, 2003

Aug. 15, 2003

Hi Eric, > Ideal candidates will also demonstrate the following skills: > - Use of the wxPython user interface library > - Experience with Geophysics applications > - Experience in the fields of statistics, linear algebra and > calculus How much closer can you get ;-) Yes, I am a geotechnical engineer, yes I did work for GeoDelft (*the* company for geophysics in Holland and developers of the widly used MSerie (settlement, stability, foundations, groundwaterflow etc. etc.)), yes I have Python and 3+ years of programming experience (mostly Delphi and C++).. and yes.. uhm.. I do write English :-) And most of all; my current project (eating up my spare time) http://pyciv.sourceforge.net is a 'geophysical' project. I never thought anyone else would think of writing a geophysical tool with Python. But then... No.. I do not live anywhere near Austin.. Why do these things only happen in the USA :-) Good luck with the candidates, Rob ps. I realy hope your application will be open source. It is about time we get some good open source engineering tools. pps. Thanks for chaco and scipy. I use them in pyciv and they make calculations easy and graphical output of the results look very smooth indeed.

1 0

ANN: Job posting -- developer position available
by eric jones Aug. 15, 2003

Aug. 15, 2003

Hey group, We have a developer position open here at Enthought, and I thought I'd see if anyone is interested. The posting is below. There is also a tech writer and HCI opening listed on the website: http://www.enthought.com/careers.html thanks! eric Position: Python Developer Type: Full-Time Enthought, Inc. is a technology startup in the Austin, TX area that is looking for a motivated Python Developer to join our development team. Responsibilities include developing and deploying scientific applications within the Fortune 500. Our size and prospects provide significant opportunity for growth and advancement for Enthought employees. Candidates should have the following qualifications: - BS or MS in Computer Science or Engineering or other scientific field - 3+ years experience in the software industry - Experience developing solutions in the following languages: - Python - C/C++ - User interface design experience - Developing and deploying custom solutions for clients - Excellent verbal and written communication skills Ideal candidates will also demonstrate the following skills: - Use of the wxPython user interface library - Experience with Geophysics applications - Experience in the fields of statistics, linear algebra and calculus Please send resumes to jobs(a)enthought.com. ---------------------------------------------- eric jones 515 Congress Ave www.enthought.com Suite 1614 512 536-1057 Austin, Tx 78701

1 0

Complex matrices in linalg.lu
by Nils Wagner Aug. 15, 2003

Aug. 15, 2003

Hi all, I wonder if there is any progress in resolving the problem of complex matrices within linalg.lu ? Thanks in advance. Nils

1 0

Problems during build process of latest cvs
by Nils Wagner Aug. 15, 2003

Aug. 15, 2003

Hi all, python setup.py build failed with the following error message.... agg_scanline_u8.h:144: error: agg::scanline_u8::iterator::iterator(agg::scanline_u8&) error: command 'gcc' failed with exit status 1 Nils

1 0

strange error with win32 build for py21
by Jun Sung Aug. 13, 2003

Aug. 13, 2003

Dear experts: I am getting very strange error with SciPy-0.2.0-alpha. All multiplication involving array (array*scalar) coerces fractions into 0's. I have tracked the error down to fastumath module in scipy_base. For example: >>> import Numeric >>> x=Numeric.arange(11.) >>> x*.5 array([ 0. , 0.5, 1. , 1.5, 2. , 2.5, 3. , 3.5, 4. , 4.5, 5. ]) >>> import scipy_base.fastumath >>> x*.5 array([ 0., 0., 0., 0., 0., 0., 0., 0., 0., 0., 0.]) Furthermore, as seen in "scipy_base/limits.py" , when two arrays with float typecodes are multiplied, Python throws an ArithmeticError: Integer overflow in multiply. Should I bother with the C code or is there an obvious clue I need to get. Thanks, in advance. /js --------------------------------- Do you Yahoo!? The New Yahoo! Search - Faster. Easier. Bingo.

1 0

[Q] MLab module (in quadpack.py)??
by Anderi Smiranov Aug. 5, 2003

Aug. 5, 2003

hi i've built SciPy, SciPy-0.2.0_alpha_200.4161_src.tar.gz, Python 2.2.2, Numeric 23. This is great stuff! one question though: in scipy/Lib/integrate/quadpack.py i've found the line: import MLab besides the fact it breaks the import of quadpack: what is that? Some interface to MatLab from Python? Regards, Andrei Smirnov

2 1