[SciPy-Dev] [GSOC 2018 Project Thread]: Rotation formalism in 3 dimensions

Thu Aug 2 01:41:01 EDT 2018

This project is very close to completion: 2 more PRs need to finalised
during the coming week.
A major chunk of the module has already been merged into the master branch
and the new `scipy.spatial.transform` submodule currently lives here
<https://github.com/scipy/scipy/tree/master/scipy/spatial/transform>. The
main Rotation class is almost complete and production ready.

There are some changes to the spherical linear interpolation (Slerp) class
as it stands and the two outstanding pull requests implement Wahba's
estimation and Quaternion Spline interpolation.

Best,
Aditya

On Wed, 1 Aug 2018 at 23:29, Phillip Feldman <phillip.m.feldman at gmail.com>
wrote:

> Has this project been completed?  If so, is there a timeline for
> incorporating the changes into the main branch?
>
> On Mon, Jun 4, 2018 at 1:50 PM, Aditya Bharti <adibhar97 at gmail.com> wrote:
>
>> We do plan to create a tutorial with examples highlighting the major
>> functionality of the module and some common use cases, but its exact nature
>> and extent will depend upon how much time we have left after completing the
>> implementation (including docstrings and tests).
>>
>> Best,
>> Aditya
>>
>> On Mon, 4 Jun 2018 at 09:45, Phillip Feldman <phillip.m.feldman at gmail.com>
>> wrote:
>>
>>> "Refer to docs for more details."  Will there be user documentation
>>> beyond the doc strings in the various methods?
>>>
>>> On Tue, May 29, 2018 at 2:21 PM, Aditya Bharti <adibhar97 at gmail.com>
>>> wrote:
>>>
>>>> Hi all,
>>>> Continuing the work so far, the following have been implemented this
>>>> week:
>>>>
>>>>    - `from_rotvec`, `as_rotvec`: Representing Euler angles as rotation
>>>>    vectors, with appropriate Taylor series expansions for small angles
>>>>    - `from_euler`: Initialization from Euler angles, along with a
>>>>    string based axis sequence specification. Refer to docs for more details.
>>>>
>>>> As always, the project lives here
>>>> <https://github.com/adbugger/scipy/tree/rotation/scipy/spatial/transform>,
>>>> and my personal experiences can be found on the blog
>>>> <https://blogs.python-gsoc.org/aditya-bharti>.
>>>>
>>>> Thanks,
>>>> Aditya
>>>>
>>>> On Sun, 20 May 2018 at 13:28, Phillip Feldman <
>>>> phillip.m.feldman at gmail.com> wrote:
>>>>
>>>>> When you say "discrete cosine matrix", I think that you mean
>>>>> "direction cosine matrix" (see
>>>>> https://en.wikiversity.org/wiki/PlanetPhysics/Direction_Cosine_Matrix
>>>>> ).
>>>>>
>>>>> Phillip
>>>>>
>>>>> On Sat, May 19, 2018 at 12:23 PM, Aditya Bharti <adibhar97 at gmail.com>
>>>>> wrote:
>>>>>
>>>>>> Hi all,
>>>>>> So this concludes week 1 of GSoC 2018. I must say it was a great
>>>>>> learning experience and I invite you all to check out my account of this
>>>>>> week on the blog <https://blogs.python-gsoc.org/aditya-bharti/>.
>>>>>> This email is more of a technical update.
>>>>>>
>>>>>>    - So, the main `Rotation` class will live under a new sub module
>>>>>>    `scipy.spatial.transform`.
>>>>>>    - Conversion between quaternions and discrete cosine matrices was
>>>>>>    implemented.
>>>>>>    - The rotation class now supports `from_quaternion`, `from_dcm`,
>>>>>>    `as_quaternion` and `as_dcm`, with support for multiple rotations in one
>>>>>>    call.
>>>>>>
>>>>>> The project currently lives in my own fork of scipy here
>>>>>> <https://github.com/adbugger/scipy/tree/rotation/scipy/spatial/transform>.
>>>>>> Stay tuned for more updates!
>>>>>>
>>>>>> Best,
>>>>>> Aditya
>>>>>>
>>>>>> On Wed, 2 May 2018 at 21:03, Aditya Bharti <adibhar97 at gmail.com>
>>>>>> wrote:
>>>>>>
>>>>>>> Hi Nikolay,
>>>>>>>
>>>>>>> I've used Wordpress only once before, so I don't know much about it.
>>>>>>> From my limited experience, it is extremely customizable. You can customize
>>>>>>> every thing from the look and feel to SEO characteristics. There are
>>>>>>> apparently a lot of wordpress plugins for these kind of tasks. For this
>>>>>>> particular blog, PSF had already setup an account for me with a site on it.
>>>>>>> All I had to do was click on the 'New' button and open up the new post
>>>>>>> page. There's a field for a header and body text, with options for adding
>>>>>>> audio, video and hyperlinks.
>>>>>>>
>>>>>>> As regards to the post itself, sure I'll expand it with a brief
>>>>>>> overview, motivation and an example. Note that the example will only show
>>>>>>> sample usage, not any internals. I plan to borrow heavily from my proposal
>>>>>>> for this purpose, I hope that's ok.
>>>>>>>
>>>>>>> Regards,
>>>>>>> Aditya
>>>>>>>
>>>>>>> On 2 May 2018 at 19:54, Nikolay Mayorov <nikolay.mayorov at zoho.com>
>>>>>>> wrote:
>>>>>>>
>>>>>>>> Hi, Aditya!
>>>>>>>>
>>>>>>>> Glad that you set up the blog and good job on setting up the
>>>>>>>> documentation build as well.
>>>>>>>>
>>>>>>>> Curious, what is this blogging platform like? How do you create
>>>>>>>> posts in it?
>>>>>>>>
>>>>>>>> As for your first post: while not strictly necessary I think it
>>>>>>>> would be nice to see a more thorough introductory post with a brief
>>>>>>>> overview, motivation and/or an example. Do you want to work on it?
>>>>>>>>
>>>>>>>> Best,
>>>>>>>> Nikolay
>>>>>>>>
>>>>>>>>
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