[SciPy-user] BVP

Michael McNeil Forbes mforbes@physics.ubc...
Fri Apr 11 12:03:30 CDT 2008


Hi Lorenzo,

On 11 Apr 2008, at 6:11 AM, lorenzo bolla wrote:

> Hi all!
>
> Is there any package to solve Boundary Value Problems with Scipy?  
> I'm thinking to something like Matlab's bvp4c.
> I found this, by Pauli Virtanen: http://www.elisanet.fi/ptvirtan/ 
> software/bvp/index.html, which is a wrapper to COLNEW, but it fails  
> to compile/install.
> Here is the installation error:
>
> ----------------------
> $> python setup.py install
>
> setup.py:17: UserWarning:
>     Atlas (http://math-atlas.sourceforge.net/) libraries not found.
>     Directories to search for the libraries can be specified in the
>     numpy/distutils/site.cfg file (section [atlas]) or by setting
>     the ATLAS environment variable.
>   warnings.warn(AtlasNotFoundError.__doc__)
> Traceback (most recent call last):
>   File "setup.py", line 63, in <module>
>     setup(**configuration(top_path='').todict())
>   File "setup.py", line 24, in configuration
>     info = __import__('bvp/info')
> ImportError: No module named bvp/info
>
> ----------------------

I just fixed this by adding:

sys.path.insert(0,'bvp')

then changing the line to

info = __import__('info')

(Does anyone know a better way of allowing the setup file to refer to  
the info file which is down a path?)

After this, running

python setup.py build
python setup.py install

works for me on Mac OS X and Linux.  I do not have a windows box.   
The missing file does get generated (presumably by f2c).  What  
versions of bvp and numpy are you using?  (Were you able to build  
numpy, or did you use a binary?)

Michael.

> It looks like a problem with bvp/info, so I get rid of that  
> instruction, but I have a compilation problem:
>
> ----------------------
>
> $ python setup.py install
> setup.py:17: UserWarning:
>     Atlas (http://math-atlas.sourceforge.net/) libraries not found.
>     Directories to search for the libraries can be specified in the
>     numpy/distutils/site.cfg file (section [atlas]) or by setting
>     the ATLAS environment variable.
>   warnings.warn(AtlasNotFoundError.__doc__)
> non-existing path in '.': 'lib/colnew.pyf'
> non-existing path in '.': 'lib/mus.pyf'
> Warning: Assuming default configuration (.\bvp\tests/ 
> {setup_tests,setup}.py was not found)
> Appending bvp.tests configuration to bvp
> Ignoring attempt to set 'name' (from 'bvp' to 'bvp.tests')
> running install
> running build
> running config_cc
> unifing config_cc, config, build_clib, build_ext, build commands -- 
> compiler options
> running config_fc
> unifing config_fc, config, build_clib, build_ext, build commands -- 
> fcompiler options
> running build_src
> building extension "bvp._colnew" sources
>   target build\src.win32-2.5\lib\_colnewmodule.c does not exist:
>    Assuming _colnewmodule.c was generated with "build_src -- 
> inplace" command.
> error: 'lib\\_colnewmodule.c' missing
>
> ----------------------

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