issue_comments: 1251836989

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https://github.com/pydata/xarray/issues/7045#issuecomment-1251836989 https://api.github.com/repos/pydata/xarray/issues/7045 1251836989 IC_kwDOAMm_X85KnYQ9 12912489 2022-09-20T04:48:07Z 2022-09-20T06:13:32Z NONE

This suggestion looks roughly like what we are discussing in https://github.com/pydata/xarray/discussions/7041#discussioncomment-3662179, i.e., using a custom index that avoids this? So maybe the question here is whether such an ArrayIndex should be the default?

Aside from that, with my outside perspective (having used Xarray extremely little, looking at the docs and code occasionally, but developing a similar library that does not have indexes):

Indexes (including alignment behavior) feel like a massive complication of Xarray, both conceptually (which includes documentation and teaching efforts) as well as code. If all you require is the ArrayIndex behavior (i.e., exact coord comparison in operations) then the entire concept of indexes is just ballast, distraction in the documentation, and confusion. Example: Why can't we use loc/sel with a non-dimension (non-index) coord? --- without index we would just search the coord with no need to limit this to index-coords, and this is often fast enough?

 
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