The Sankey Diagram is a type of visualization chart used to display the flow of data and the transfer of energy. It has a unique structure and a wide range of application scenarios.
Input
The first column is mRNA, the second column is lncRNA, and the third column is the type category, separated by \t
Output

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Chart Purpose
This visualization illustrates the distribution, flow, and relationships of sample data across multiple categorical dimensions. It clearly reveals how a population is segmented according to different criteria (represented by the vertical axes) and demonstrates the correspondence between these segmentations.
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How to Interpret This Chart
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Vertical Axes: Each column represents an independent categorical variable (e.g., sample groups, species abundance, functional pathways, etc.).
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Colored Strata: The colored rectangular blocks on each axis represent specific categories within that variable. The height of each block is proportional to the number of samples belonging to that category.
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Alluvial Flows: The flowing bands connecting colored blocks across different axes represent samples that maintain consistent attributes across dimensions. The thickness of each flow band indicates the quantity of samples transitioning between categories. By tracing these flows, one can observe the directional movement and quantitative changes of samples from one category to another.