The essence of drawing Sankey Plot

I would like to share two approaches to generating the most essential parts of a Sankey plot in pure Python

Sankey plot is a very nice and neat way to visualize how the values flow from its source category to the target category. In the left panel shown above, I used the Sankey plot to demonstrate how each hematopoietic population (stem cell, erythroid progenitors) can be further divided into more granular sub-populations informed by …

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