save_tree: Save a tree on disc
In vicstefanou/ViSCA: Cell-Movie Analysis and Visualization

Saves a lineage or division tree on disc in nodes and edges .csv files.

1	save_tree(tree, path = getwd(), prefix = "", sep = "\t")

`tree`	The linegae or division tree to be saved, an object of class `"igraph"`.
`path`	A character string naming the directory where the `"nodes.csv"` and `"edges.csv"` files will be saved (excluding the last `"/"`). If it does not contain an absolute path, the files will be saved relative to the current working directory, `getwd()`. The default value is the current working directory `getwd()`. NOTE: The components should be separated by `"/"` on Windows.
`prefix`	A prefix that will be added to the name of the `"nodes.csv"` and `"edges.csv"` files, a character string. The default value is the empty string `""`.
`sep`	The field separator character. Values on each line of the `"nodes.csv"` and `"edges.csv"` files will be separated by this character. The default value is the tab separator `"\t"`.