# Node-Link Diagrams

Node-Link diagrams can be used to visualize trees as well.

Some examples:

*   file system

    ![](https://192301203-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M5-0RG_uqhxyMNjpMUW%2F-M5-0SvQ45Rarxg8L2lA%2F-M5-0VJ9aqHTtK1fnT_N%2Ffile%20system.png?generation=1586990826154891\&alt=media)
* sentence-parsing tree ![](https://192301203-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M5-0RG_uqhxyMNjpMUW%2F-M5-0SvQ45Rarxg8L2lA%2F-M5-0VJBqR1Sdn0J6VB9%2Fsentence.png?generation=1586990825646792\&alt=media)
* phylogenetic tree ![](https://192301203-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M5-0RG_uqhxyMNjpMUW%2F-M5-0SvQ45Rarxg8L2lA%2F-M5-0VJDr6C8Jh7vLvKq%2Fphylogenetic.png?generation=1586990825763523\&alt=media)
* indented list ![](https://192301203-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M5-0RG_uqhxyMNjpMUW%2F-M5-0SvQ45Rarxg8L2lA%2F-M5-0VJFnwu4dG5-_Z4S%2Findented%20list.png?generation=1586990826108181\&alt=media)
* radial layout (root node in the center) ![](https://192301203-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-M5-0RG_uqhxyMNjpMUW%2F-M5-0SvQ45Rarxg8L2lA%2F-M5-0VJH-R6reGSAz2yh%2Fradial%20tree.png?generation=1586990825867041\&alt=media)

## Issues with Node-Link Diagrams for Trees

* **Scalability**
  * Node-Links Diagrams do not scale well; they can get too cluttered
  * There is a 1-D growth with increase in data
  * Radial layout scales slightly better than others
* **Labeling**
  * With more labels, there is more clutter
* **Encoding Information** can be a little difficult
