issue_comments: 353225923

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https://github.com/pydata/xarray/pull/1796#issuecomment-353225923 https://api.github.com/repos/pydata/xarray/issues/1796 353225923 MDEyOklzc3VlQ29tbWVudDM1MzIyNTkyMw== 12229877 2017-12-21T00:51:35Z 2017-12-21T00:53:02Z CONTRIBUTOR

I like this. My main concern is that I'd like a fully explicit way to opt into this behavior. Perhaps rgb='band' and/or rgba='band'?

I have a pretty strong preference for RGB images 'just working' - requiring a new argument would mean imshow has a different signature to all other plot methods without adding any information. If it's an optional argument, it barely does anything - in the rare case where the heuristic fails, you can supply x and y dims instead.

In many ways showing an RGB image is a special case, but this is the least-special-case I could make work - and it's consistent with the obvious meaning and upstream behavior of imshow.

 
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