issue_comments: 442725856

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https://github.com/pydata/xarray/issues/1603#issuecomment-442725856 https://api.github.com/repos/pydata/xarray/issues/1603 442725856 MDEyOklzc3VlQ29tbWVudDQ0MjcyNTg1Ng== 5635139 2018-11-29T06:52:49Z 2018-11-29T06:52:49Z MEMBER

Let me make a tentative proposal: we should model a MultiIndex in xarray as exactly equivalent to a sparse multi-dimensional array, except with missing elements modeled implicitly (by omission) instead of explicitly (with NaN).

💯- that very much resonates! And it leaves the implementation flexible if we want to iterate.

I'll try to think of some dissenting cases to the proposal / helpful responses to the above.

 
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