Stream Chart
A stream chart, also known as a streamgraph or a theme river chart, is a type of data visualization that displays the changes in the composition of a dataset over time. It consists of a series of curves that flow across a horizontal axis, with each curve representing a different category or variable. The height of each curve corresponds to the relative proportion of the data for that category at any given time.
Stream charts are useful for visualizing the evolution of a dataset over time and identifying changes in the composition of the data. They can be particularly effective for displaying large and complex datasets with many categories or variables, as they allow for easy comparison and analysis of the data.