Qingyi Zhang (qz2419)
I have chosen ggalluvial package as my topic.
First, I described what ggalluvial is and what its function is.
Then I introduced it from two aspect since there are two Format of alluvial graph: Wide format and Lodes(Long) Format.
After introducing the basic information and code, I also make some changes to the basic graph which can help analyst more efficiently analyze the data from different aspects.
if the above link does not work, use this link instead: https://cheatography.com//seleven/cheat-sheets/ggalluvial/pdf/