issue_comments: 258496425

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https://github.com/pydata/xarray/pull/1024#issuecomment-258496425 https://api.github.com/repos/pydata/xarray/issues/1024 258496425 MDEyOklzc3VlQ29tbWVudDI1ODQ5NjQyNQ== 4160723 2016-11-04T17:29:54Z 2016-11-04T17:29:54Z MEMBER

Option D seems indeed the cleanest and safest option, but

Even eagerly loading indexes is potentially problematic, if loading the index values is expensive.

I can see use cases where this might happen. For example, It is common for 1, 2 or higher-dimension unstructured meshes that the coordinates x, y, z are arranged as 1-d arrays of length that equals the number of nodes (which can be very high!). See for example ugrid conventions.

I admit that currently xarray is perhaps not very suited for handling unstructured meshes, but IMO it has great potential (especially considering multi-index support) and I'd love to use it here.

 
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