Alluvial plots typically show the change in distribution between stratum from each time point to the subsequent time point. I want to create an alluvial plot that shows the change in distribution from baseline to each subsequent time point, instead of time point to time point. In other words, I want to show the change in distribution from baseline to 2nd time point, baseline to 3rd time point, etc. Everything in the plot would be same, except for the alluvial themselves.
Are there any functions or parameters I can tweak to ggplot’s usage of alluvial plots to accommodate this? Or perhaps a recommendation of another data visualization method? Any advice is appreciated.
Original example of an alluvial plot (not what I want):
