Re: [LabPython-Users] Numpy and Scipy

[Jim K. <jim...@gm...>]

Hello All,

I'm sure that Rolf would happily accept purchase orders for any new features
that you would like ;)

Cheers,

-Jim


On Thu, Jun 5, 2008 at 3:40 PM, Glen Shennan <gle...@gm...> wrote:

> Hi again,
>
> I would like voice my thanks for labpython as well, it's generally a great
> piece of software, it's just unfortunate that numpy support is not there
> since I was, as Luc said, using python/numpy/matplotlib as a matlab
> replacement.
>
> Cheers,
> Glen
>
> 2008/6/5 Luc Estebanez <luc...@en...>:
>
> Hi all,
>>
>> I would like to add my vote to support the idea to add a numpy interface
>> for Labpython! This would enhance greatly this piece of software since
>> numpy has really become the standard for numerical stuff in python, and I
>> suppose many users of Labpython are using python as a 'matlab'
>> replacement.
>>
>> Thank you for all the hard work,
>>
>> Gratefully,
>>
>> luc
>>
>> > Hi Glen
>> >
>> > So numpy and scipy functions can be used as long as native data types
>> are
>> > used?  That may cause some problems since I am trying to perform matrix
>> > operations.  I am using LabVIEW 8.20 with python 2.5.2 and labpython
>> 1.2.2
>> > on Windows XP.  I am trying to pass a 2D array of floats to python.
>> >
>> > It should be possible. The way I solved arrays in LabPython was to treat
>> > them as lists. Consequently 2D arrays are lists of lists. It is not very
>> > efficient but Python does even in 2.5 not give you an exported array C
>> API
>> > with which I could retrieve any information from a numpy array, despite
>> > the
>> > fact that the Python core does know an array datatype.
>> >
>> > It would be possible to add something like that to LabPython by making
>> use
>> > of the numpy extension and its exported C API but at the time I was
>> > developing LabPython numpy was just in its infancy taking over from its
>> > predecessor the numerical library. That API seemed not at all stable to
>> me
>> > at that point and making LabPython depend only softly on it (meaning it
>> > would still work but without support of numpy datatypes) would also be
>> > some
>> > serious thinkering.
>> >
>> > I may take a look how numpy interfaces with Python to solve the array
>> > interface issue but to do it right would be a majour undertaking and I
>> > have
>> > a real job to do that pays the bills.
>> >
>> > Rolf Kalbermatter
>> >
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