CAD -> FEM | writing FEM meshes in abacus format || pythonOCC

Hi, I'm wondering whether someone has experience / code / pointers on how to write FEM meshes to Abacus ( Simulia, whatever ). We're making good progress at the pythonOCC(.org) project in coupling CAD & FEM and a next step would be to plug the generates meshes into a major FEM solver such as abaq

Re: Can't override class |__new__

> Aaron explained it better than I did. Basically the C/C++ module uses > C/C++ version of Facet class directly without consulting python > interpreter, this is what I meant by static linking. Thanks so much for the explanation Lie, I understood it fully now. Thanks again, -jelle -- http:

Re: Can't override class |__new__

> > CGAL.Facet = OtherFacet > > CGAL.Polyhedron.Facet = OtherFacet > > p = CGAL.Polyhedron_3() > You're not creating Facet object here, not even Polyhedron.Facet. Right, which is not the point; I'm trying to override the Facet, a topological entity of which a Polyhedron is composed of . ( vertex

Re: Can't override class |__new__

Hi Aaron, Thanks so much for your feedback. > Regardless of CGAL's dictionary, it instantiates a Facet. True, when I add attributes to it, they are disregarded when looping through the facets later on. > Depending on the details, you may need only to cut-and-paste your own > 'make_triangle' fu

Can't override class |__new__

Hi, I'm working with a C++ module ( CGAL, comp.geom. with exact arithmic ) and am having troubles finding a way to override how the modules returns objects. What I'm trying to do is to extend the Facet class, but when I try to use my version of the class, the parent class is still being returned

Re: Python 3D CAD -- need collaborators, or just brave souls :)

Hi Josh, > http://www.pythonocc.org/ However, I'm > not entirely clear on the license for this so that might be an issue. We're using a French license for the moment, but will move to something more standard soon. PythonOCC ( the current SVN version ) wraps 85% of the OpenCASCADE kernel. Consi

Re: shouldn't 'string'.find('ugh') return 0, not -1 ?

Thanks for your in-depth explanation Tim. Which is impossible to disagree with! On 10/31/07, Tim Chase <[EMAIL PROTECTED]> wrote: > > > Well, I this is another idiom in itself, right? > > Your checking if something is part of an iterable. > > I'm checking truth before entering a conditional expre

Re: shouldn't 'string'.find('ugh') return 0, not -1 ?

> The statement that you want to test the truth of is s.find(q) >= 0. In > other words, you want to see that the substring was found at a valid > (non-negative) location. As someone else pointed out, it would make more > sense to use None instead of -1. I agree, that would be nice. You still

shouldn't 'string'.find('ugh') return 0, not -1 ?

Hi Tim, Well, I this is another idiom in itself, right? Your checking if something is part of an iterable. I'm checking truth before entering a conditional expression. The latter is considered to be pythonic, right? -jelle On 10/31/07, Tim Chase <[EMAIL PROTECTED]> wrote: > > > if I check a st

Re: shouldn't 'string'.find('ugh') return 0, not -1 ?

There is a subtle point though. If the substring is not found '_'.find(' '), will return -1 Semanticly, I was expecting the that if the substring was not found, the conditional statement would not be found. However, python evaluates -1 to True, so that is what I do find confusing. So, I was arguing

Re: shouldn't 'string'.find('ugh') return 0, not -1 ?

> > What's your point? :/ that of making sure before you post and cause public emberassement? -- http://mail.python.org/mailman/listinfo/python-list

Re: Color Segmentation w/ PIL?

You might be interested in the ndimage module of scipy: http://www.scipy.org/SciPyPackages/Ndimage If you need a very serious image processing framework, ITK is might be very interesting: http://www.itk.org/ If so, have a look at the more Pythonic interface developed for it: www.insight-journal.or

Modules and Namespaces

##I'm sorry to stir up such a well discussed topic yet again, but namespaces are a point of confusion to me... I took the effort of organizing my Python code (scripting a cad program calles Rhino) in well defined classes, which would be a terrific thing if I didn't got stuck in namespace issues.

genetic algorithms

Could anyone recommend me a genetic algorithm package? So far I have found a few, such as GAS, pyGP, Genetic, and of course scipy.ga My problem is that most of the development of these packages seems to be stalled, or that in scipy.ga's case, the module seems huge and somewhat overly complicated.

building extensions: ming & python mathlink for win32

Have been trying to build python extensions from the C libs ming & mathlink. I have been able to produce a .pyd object after studying Mike Fletchers excellent: http://www.vrplumber.com/programming/mstoolkit/   which is a terrific tutorial for anyone trying to compile .pyd on win32!  

python & iges (nurbs file format)

Is anyone aware of a module allowing you to read / write .iges data? Currently I’m trying to figure a way of writing out my nurbs data generated in python, but if such a package exists, that would be great, haven’t been able to find anything so far…   Cheers,   Jelle. -- http://

RE: OCAMl a more natural extension language for python?

H. Not familiar with erlang at all... > Subject: Re: OCAMl a more natural extension language for python? > > Hi ! > > OCAML is very complementary at Python : > > unreadable vs readable That's depending on how you compare; I find OCAML quite readable compared to C / Fortran >

OCAMl a more natural extension language for python?

After reading about extending python with C/Fortran in the excellent Python Scripting for Computational Science book by Hans Langtangen, I'm wondering whether there's not a more pythonic way of extending python. And frankly I think there is: OCAML Fortunately there is already a project up and runn

os.spawn & stdOUT trouble

Yikes, how painful, I meant stdOUT > trouble instead of stdin... Awefully sorry Cheers, Jelle ##thanks for pointing that out Denis! -- http://mail.python.org/mailman/listinfo/python-list

os.spawnv & stdin trouble

##I know I should be using 2.4 and os.Popen, I know, I know… ##However, since most modules I need, I’m using 2.3 for this script     I’m having troubles executing a shell script. The thing is that I’m produing material and geometry files that need to be compiled to a binary description

RE: python & nurbs

> Have you looked at Blender (http://www.blender3d.com)?? Blender seems very promising, its python support is exactly what I'm looking for, but it lacks the cad/parametric capabilities I'm looking for. -- http://mail.python.org/mailman/listinfo/python-list

RE: python & nurbs

> Hint to get a useful answer: Define your needs. Display in 3D (want to > use them to define and display geometry)? Numeric analysis (writing > some sort of CAD or automation system)? Modeling system (want some way > to interactively define them)? I wish I could give you a well defined answer

python & nurbs

Is anyone aware of a python nurbs module? So far I found Runar Tenfjord's effort, which is quite interesting: http://runten.tripod.com/NURBS/ But in the end doesn't really meet my needs. Any suggestions? Cheers, Jelle. -- http://mail.python.org/mailman/listinfo/python-list

compiling ming on win32/python 2.3

I wonder whether anyone on this list has been able to compile the ming .swf output library successfully on win32/python2.3? I have quite some trouble trying to compile these kind of libraries, maybe you could point me to a good starters tutorial on this?   Cheers,   Jelle. -- ht