feat(Slice Explorer): adding inital version of the slice explorer

[ayenpure]

Adding Slice Explorer
-- the main module in the explorers directory
-- a driver example using python in examples
-- a jupyter notebook demo example

[johnkit]

Before merging, we need to update slice explorer to handle more general time coordinates

1. Update the current logic from month to instead use the builder's time coordinate.
2. Need to handle more than integer time coordinates. At a min, let's get slice explorer to at least recognize/support datetime64[ns]. Maybe we can use the same logic as dataset viewer.

For testing, I have a small data file and notebook. For some reason, github will not let me upload either of these files, nor a tgz. So I put them on data.kitware. You can get them at https://data.kitware.com/#user/55dcb06e8d777f6ddc3ff892/folder/6703f95cfb903c47575a91f9

[ayenpure]

Before merging, we need to update slice explorer to handle more general time coordinates

1. Update the current logic from month to instead use the builder's time coordinate.

I've updated the code to use builder.t so that we do not hard code any dimension names

2. Need to handle more than integer time coordinates. At a min, let's get slice explorer to at least recognize/support datetime64[ns]. Maybe we can use the same logic as dataset viewer.

With the change above we should be able to use any date time format. I need to check this with dataset with datatime object for time coordinates. I'll test with the new files you've shared below

For testing, I have a small data file and notebook. For some reason, github will not let me upload either of these files, nor a tgz. So I put them on data.kitware. You can get them at https://data.kitware.com/#user/55dcb06e8d777f6ddc3ff892/folder/6703f95cfb903c47575a91f9

[ayenpure]

@jourdain Any idea why the CI could be failing?
I am at a loss as black locally does not report any changes for me but is failing pre-commit and for the MacOS tests something is weird as they pass for Linux and Windows

[jourdain]

Install pre-commits - See https://github.com/Kitware/pan3d/blob/main/CONTRIBUTING.rst

Then if you run black by hand, you need to have the same version as the one defined here

[ayenpure]

Install pre-commits - See https://github.com/Kitware/pan3d/blob/main/CONTRIBUTING.rst

Then if you run black by hand, you need to have the same version as the one defined here

Thanks for the helpful tip, that got the formatting problems resolved.
Any idea on how to tackle the MacOS failures? Locally they seem to work without problem

[jourdain]

Maybe not related, but one issue that you have is your JSON file for the preset is not getting bundled in your Python package.
You need to edit https://github.com/Kitware/pan3d/blob/main/pyproject.toml#L80-L83

Also a possibility for mac is a dependency not being available?

[johnkit]

Excellent work, Abhi. thanks.