[Neuroimaging] [Nibabel] Intent to deprecate int64 NIfTI images

[JB Poline]

I see - thanks !
JB

On Fri, Feb 18, 2022 at 3:42 PM Christopher Markiewicz <
markiewicz at stanford.edu> wrote:

> Hi JB,
>
> I believe SPM also doesn't read or write INT64 images. Python (and at base
> nibabel) seems to be unique as a producer of these files.
>
> Best,
> Chris
> ------------------------------
> *From:* Neuroimaging <neuroimaging-bounces+markiewicz=
> stanford.edu at python.org> on behalf of JB Poline <jbpoline at gmail.com>
> *Sent:* Friday, February 18, 2022 14:30
> *To:* Neuroimaging analysis in Python <neuroimaging at python.org>
> *Subject:* Re: [Neuroimaging] [Nibabel] Intent to deprecate int64 NIfTI
> images
>
> Hi Chris,
>
> Do we have a sense of how much is broken in the wider community ? SPM is
> matlab based but doesn't have this issue ?
>
> Cheers
> JB
>
>
>
>
> On Fri, Feb 18, 2022 at 1:20 PM Christopher Markiewicz <
> markiewicz at stanford.edu> wrote:
>
> Hi all,
>
> I want to bring everyone's attention to this issue:
> https://github.com/nipy/nibabel/issues/1089
>
> I will reproduce the reasoning here, but the issue includes the specific
> changes to the API and accompanying warnings:
>
> > 64 bit integer images are easy to generate in nibabel due to numpy
> semantics, but almost universally incompatible with non-Python tools. We
> must balance breaking existing Python scripts, the Python library
> ecosystem, and the wider neuroimaging ecosystem that uses NIfTI as an
> interchange format. Recognizing that we are currently contributing to
> breakage in the wider ecosystem, we have decided to deprecate 64-bit
> integer image creation except via explicit override.
>
> There will be a series of PRs, probably in the first half of March to
> implement these changes. A couple have already started.
>
> Please let us know what we can do to help make the transition as smooth as
> possible for any downstream libraries and ultimately, users.
>
> Happy to discuss the decision further, but please also see the discussion
> that led to this decision: https://github.com/nipy/nibabel/issues/1046
>
> Best,
> --
> Christopher J. Markiewicz, PhD
> Center for Reproducible Neuroscience
> Stanford University
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