[UTILS] New utils function to compute voxel size for a volume

[elodiegermani]

This Pull Request is related to issue [#](add a link to the issue here).

Before reviewing this Pull Request, please review Pull Request [#](add a link to the Pull Request here).

Changes proposed in this Pull Request:

• Add a utils function get_vox_dims that can be used in pre-processing pipelines to get the size of voxels.
• Don't really know where to add the documentation?

Checklist:

• Descriptive title
• Targets the main branch
• Changes are functional
• My code is explicit and comments were added to it
• Code conforms with PEP8
• Tests were added for the changes and they complete successfully
• Existing tests were updated (if needed) and they complete successfully
• Documentation was updated

[bclenet]

@elodiegermani, we could use this opportunity to start a new module containing "core" methods (i.e. methods common to almost all pipelines and dealing with their logic / neuro-imaging aspects). Although I have no idea how to name it for now and where it should be (maybe narps_open.core ?).

I know this is not documented enough for now but perhaps we should use narps_open.utils as place to store more general-purpose utilities.

I'll think about it and let you know. Any suggestions are welcome :)

To answer your question about documentation : the doc of this new module could be started in a new file under docs/.

[bclenet]

Hi @elodiegermani !

I started a new PR that contains the code you needed (get_vox_dims).
Once its is merged, you will be able to use the function in pipelines.

If you have time, please have a look to the PR to tell me what you think. Thanks ! 🙂

[bclenet]

Hi !
The PR is going to be closed because its code was added in the main branch, by merging PR #128 .