issue_comments: 522350359

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https://github.com/pydata/xarray/issues/3176#issuecomment-522350359 https://api.github.com/repos/pydata/xarray/issues/3176 522350359 MDEyOklzc3VlQ29tbWVudDUyMjM1MDM1OQ== 5635139 2019-08-18T19:56:19Z 2019-08-18T19:56:19Z MEMBER

Good work on finding that issue. I think even if we can get something brief in, that would be helpful.

On the specific definitions:

What do you think of the terminology "alternative" or "auxiliary" dimension? a is clearly a dimension in the sense that it has coordinates or labels for all the "tick marks" along the x dimension.

For me 'dimension' has a precise definition from traditional sciences, so having our 'coordinate' be an additional / auxiliary / alternative dimension wouldn't be consistent with that (e.g. a 4-dimensional array would still be 4 dimensional regardless of how many coordinates it had).

At the very least, I'd love to add a lot more examples of how to actually use these things.

👍 

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