[Numpy-discussion] Interface numpy arrays to Matlab?

[Neal Becker]

Transplant sounds interesting, I think I could use this.  I don't
understand though why nobody has used a more direct approach?  Matlab has
their python API
https://www.mathworks.com/help/matlab/matlab-engine-for-python.html.  This
will pass Matlab arrays to/from python as some kind of opaque blob.  I
would guess that inside every Matlab array is a numpy array crying to be
freed - in both cases an array is a block of memory together with shape and
stride information.  So I would hope a direct conversion could be done, at
least via C API if not directly with python numpy API.  But it seems nobody
has done this, so maybe it's not that simple?


On Mon, Aug 28, 2017 at 5:32 PM Gregory Lee <grlee77 at gmail.com> wrote:

> I have not used Transplant, but it sounds fairly similar to
> Python-matlab-bridge.  We currently optionally call Matlab via
> Python-matlab-bridge in some of the the tests for the PyWavelets package.
>
> https://arokem.github.io/python-matlab-bridge/
> https://github.com/arokem/python-matlab-bridge
>
> I would be interested in hearing about the benefits/drawbacks relative to
> Transplant if there is anyone who has used both.
>
>
> On Mon, Aug 28, 2017 at 4:29 PM, CJ Carey <perimosocordiae at gmail.com>
> wrote:
>
>> Looks like Transplant can handle this use-case.
>>
>> Blog post: http://bastibe.de/2015-11-03-matlab-engine-performance.html
>> GitHub link: https://github.com/bastibe/transplant
>>
>> I haven't given it a try myself, but it looks promising.
>>
>> On Mon, Aug 28, 2017 at 4:21 PM, Stephan Hoyer <shoyer at gmail.com> wrote:
>>
>>> If you can use Octave instead of Matlab, I've had a very good experience
>>> with Oct2Py:
>>> https://github.com/blink1073/oct2py
>>>
>>> On Mon, Aug 28, 2017 at 12:20 PM, Neal Becker <ndbecker2 at gmail.com>
>>> wrote:
>>>
>>>> I've searched but haven't found any decent answer.  I need to call
>>>> Matlab from python.  Matlab has a python module for this purpose, but it
>>>> doesn't understand numpy AFAICT.  What solutions are there for efficiently
>>>> interfacing numpy arrays to Matlab?
>>>>
>>>> Thanks,
>>>> Neal
>>>>
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