It is relatively straightforward to build a streamgraph in R thanks to the
By default a streamchart is displayed all around a horizontal line. You can change that thanks to the offset option
Leave the smooth and rounded option to get something similar to a stacked area chart or to a stacked barplot.
streamgraph package is a html widget. It means that your output will automatically be interactive. Hover a group to highlight it, get its name and its exact value. If for some reason you need to export it to