Chunk-aware rendering

[droumis]

When visually exploring large chunked lazy arrays, it would be useful to restrict the loading/rendering to the 'active' chunks extent (maybe with a controllable number of buffer chunks) for certain plots that would normally try to load/render the entire dataset, like a minimap. This would provide a safeguard that prevents displaying or loading more data chunks than can be dealt with.

Suggested behavior for a time-chunked dataset:

First position of minimap selection

Second position of minimap selection

[droumis]

An extension/alternative approach could be to save a downsampled/aggregated image of the minimap as you pass over all the chunks, and have some other way to then indicate which chunks are in memory

[droumis]

Chunking could potentially be in both dimensions

[droumis]

Decided not to proceed with this approach

[github-actions]

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