Rethink timeline

[erykpiast]

A stacked line chart may not be the best visualization type for chunks. Let's explore different ones.

Line chart

Each chunk has a separate line plus the total size is displayed as a separate series.

In this scenario, the focused area may become a slope chart. The only thing that needs to be done is fixed tooltip.

Alluvial diagram

Alluvial diagram may show better how chunks change, how one becomes the other. It requires a dataset that handles renames and splits perfectly, for example through comparing modules between new and old chunks.

Stream graph

Stream graph looks quite similar to the stacked area chart but may visualize flows better. It seems like a good compromise between the current solution and the alluvial diagram.

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Instead of operating on real-world data that may be broken in some way, maybe it's a good idea to prepare some artificial datapoints and work on that in a notebook.