[Numpy-discussion] NumPy Feature Request: Function to wrap angles to range [ 0, 2*pi] or [ -pi, pi ]

[Thomas]

I use my own implementation of the wrap function in kinematics and kinetics
(robotics).
Solutions beyond [0, 2pi] or [-pi, pi] can cause some problems when
combined with learning algorithms, so we wrap them.

Interestingly, today I reviewed code for a teammate. He had the exact same
problem,
but did not think much about it and solved it with if-else statements.

But yes, maybe this is too specific and trivial for a Numpy function.

Thanks for taking the time to look into it!

On Tue, 24 Nov 2020 at 15:47, Ralf Gommers <ralf.gommers at gmail.com> wrote:

>
>
> On Tue, Nov 24, 2020 at 11:37 AM Daniele Nicolodi <daniele at grinta.net>
> wrote:
>
>> On 24/11/2020 10:25, Thomas wrote:
>> > Like Nathaniel said, it would not improve much when compared to the
>> > modulo operator.
>> >
>> > It could handle the edge cases better, but really the biggest benefit
>> > would be that it is more convenient.
>>
>> Which edge cases? Better how?
>>
>> > And as the "unwrap" function already exists,
>>
>> The unwrap() function exists because it is not as trivial.
>>
>
> I agree, we prefer not to add trivial functions like this. To help those
> few people that may need this, maybe just add the one-liner Daniele gave to
> the Notes section of unwrap()?
>
> Cheers,
> Ralf
>
>
>
>> > people would expect that
>> > and look for a function for the inverse operation (at least I did).
>>
>> What is your use of a wrap() function? I cannot think of any.
>>
>> Cheers,
>> Dan
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