[IronPython] SciPy

Howard Hansen hrhan at att.net
Mon Dec 20 20:42:45 CET 2010 

Hello Mark,

If you can't find an open source math package that meets your needs you 
may want to take a look at CenterSpace's NMath Library.  The library is 
.Net compatible.   See:
http://www.centerspace.net/products/nmath/

Cost:  $995 for Nmath or $1295 for NMath and a statistical library.

Howard


On 12/20/2010 12:32 PM, Mark Senko wrote:
>
> Thank you.
>
> My real goal is to find a decent math/numerical package that I can use 
> without having to reinvent the wheel.
>
> My searches came up with numpy/SciPy.  Whether it actually uses the C 
> interface or is a refactored version for .NET  really doesn’t matter 
> to me.
>
> At least not much.
>
> I think I’ll take this opportunity to explain to this portion of the 
> IronPython community (which seems to contain most of the real “movers” 
> ) why I chose IronPython, and what I want to accomplish with it.
>
> I’m sure my use case may be of interest, at least academically, to 
> some of you.
>
> I write software that controls hardware … it moves samples around with 
> a robot and stage, controls shutters, light sources, moves optics, 
> performs data acquisition and data analysis.
>
> It’s a complicated system. It requires scientists and engineers with 
> high levels of knowledge in optics, physics, electronics to develop, 
> study and understand performance, and to calibrate.
>
> At my old company, we wrote our own macro language (early ‘90s) which 
> provided functions to move the pieces of hardware, call higher level 
> routines in our code, call mathematical and higher level analysis 
> routines, plot, macros could call other macros  … just about anything 
> you want a scripting language to do.  The portion of my efforts I 
> spent extending this macro language was time well spent.  Instead of 
> being the bottleneck that had to write all new tests and experiments 
> and new platform prototyping, I enabled the other scientists and 
> engineers to do it themselves. I was an enabler, and productivity shot 
> through the roof.
>
> Some of the macros written were simple, others complicated … but most 
> were not written by me, they were written by the scientists and engineers.
>
> But, they were not programmers … at least not in the computer 
> scientist sense.  They think procedurally, not object oriented.  They 
> don’t want to argue about global vs. local variables, or whether a 
> GOTO is good programming style.  They don’t develop web pages.
>
> At my new company, which builds a tool with similar demands, I am 
> implementing similar scripting abilities.  I didn’t want to write my 
> own scripting language again, that would be crazy with the number that 
> are already available.
>
> The core needs are control over the hardware, numerical capabilities, 
> plotting capabilities.  The language also needs to be straightforward 
> without too much overhead, like a pile of import statements, that 
> don’t really contribute to the functionality.  I also wanted a 
> language with a some history, and lot’s of community written libraries 
> that I could use without having to write my own.
>
> I did my internet search and looked at many different scripting 
> languages, finally settling on Python as having the best set of 
> language features for my needs.
>
> Granted, I HATE the indentation control, especially since an 
> auto-indented line has a “different” indentation than the preceding 
> line which was indented with spaces (unless you carefully set up your 
> editor).
>
> I would much rather see braces or ENDIF,ENDFOR, ENDDEF … statements. 
> That’s just an aside …
>
> Our company uses C#.  I quickly discovered that C# and Python don’t 
> play well together …. Ah, but here is IronPython.
>
> So I learned how to embed it, wrote my own console, learned how to 
> make static wrappers, how to make my functions global, and how to make 
> python functions global.  I’m still learning the best and easiest ways 
> to use it for our needs.
>
> But, I’m starting to find that the community developed libraries I was 
> counting on are more often than not out of reach. That is what I found 
> when I started looking for  a simple math package that would fit a 
> polynomial, perform an FFT, maybe even do a non-linear least squares 
> fit.  And I still need to find a plotting package …
>
> Anyway, I thought this might be interesting to some of you.
>
> *Mark Senko*
>
> Complete Genomics, Inc.
>
> 2071 Stierlin Court
>
> Mountain View, CA 94043
>
> *From:*users-bounces at lists.ironpython.com 
> [mailto:users-bounces at lists.ironpython.com] *On Behalf Of *Jason 
> McCampbell
> *Sent:* Monday, December 20, 2010 7:13 AM
> *To:* Discussion of IronPython
> *Subject:* Re: [IronPython] SciPy
>
> Hi Mark,
>
> As Dino mentioned we (Enthought) are working on refactoring Numpy into 
> a pure "C" core with CPython and IronPython interface layers.  This is 
> largely complete and available at github 
> (https://github.com/numpy/numpy-refactor), though the core layer is 
> largely undocumented thus far.  This is the multi-dimensional array.
>
> SciPy is in progress and we are updating it to work with the 
> refactored numpy core and to add an IronPython interface.
>
> I assume you are looking for IronPython interfaces to SciPy as opposed 
> to a C interface, correct?
>
> Regards,
>
> Jason
>
> On Thu, Dec 16, 2010 at 1:56 PM, Dino Viehland <dinov at microsoft.com 
> <mailto:dinov at microsoft.com>> wrote:
>
> Enthought has been working on getting numpy/scipy ported over to work 
> w/ IronPython.  I believe numpy is working but I’m not sure of how far 
> along SciPy is.  There’s a separate mailing list for this at:
>
> https://mail.enthought.com/mailman/listinfo/scipy4dotnet
>
> It’s very low traffic – it’s usually just working through issues 
> Enthought has run into and either workarounds or suggested changes to 
> IronPython.  I’d suggest sending a mail there – they might have 
> something you can try.
>
> *From:*users-bounces at lists.ironpython.com 
> <mailto:users-bounces at lists.ironpython.com> 
> [mailto:users-bounces at lists.ironpython.com 
> <mailto:users-bounces at lists.ironpython.com>] *On Behalf Of *Mark Senko
> *Sent:* Thursday, December 16, 2010 11:49 AM
> *To:* users at lists.ironpython.com <mailto:users at lists.ironpython.com>
> *Subject:* [IronPython] SciPy
>
> I’ve been searching for the current state of support for “C” based 
> libraries, specifically SciPy (I’m just looking for a decent numerical 
> analysis package).  The responses I’ve seen on various websites are 
> somewhat dated.
>
> What is the latest status, or is there no effort towards accommodating 
> the C API? Is IronClad still the best option? Any info, suggestions 
> and warnings would be appreciated before I start to invest a lot of 
> time into installing and learning these packages.
>
> *Mark Senko*
>
> Complete Genomics, Inc.
>
> 2071 Stierlin Court
>
> Mountain View, CA 94043
>
>   
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