Re: [Swig-user] converting c float array to numpy array or python list

[Rich E <rea...@gm...>]

Someone earlier today in my office pointed me in the same direction,
so it looks like the way to go!  I'll give it a try.. . thanks
(especially for the article link).

cheers,
Rich

On Mon, Dec 1, 2008 at 8:43 PM, Christopher Barker
<Chr...@no...> wrote:
> Rich E wrote:
>>
>> So I have a nice C library wrapped in python and I'd like to start
>> doing some plots of things in python... the problem is the data is all
>> stuck in C arrays.
>
>> But how would I go about returning a python list of the entire array,
>> or even better, an NumPy array?
>
> there is a numpy.i file distributed with numpy ( or with the docs, anyway).
> There was also a recent post on the numpy list with some extra hints and
> examples for using it.
>
> This is another nice article about it:
>
> http://matt.eifelle.com/2008/11/04/exposing-an-array-interface-with-swig-for-a-cc-structure/
>
>
>> My thoughts are that I will have to convert between C arrays and
>> python types (list or NumPy) quite often, probably at a refresh rate
>> suitable for animation.
>
> the above allow a numpy array and your C-code to share the same pointer, so
> it is very fast.
>
> -Chris
>
>
> --
> Christopher Barker, Ph.D.
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