2021.07.07

Timeline

graphviz没有简单的方法生成Timeline，所以看来最简洁的方法是写一个预处理脚本！

Using Graphviz / yed to produce a timeline + graph

Combining graphviz with a timeline for events with a time dimension

给点分组，分组赋予属性

Groups of nodes with the same attributes in GraphViz file