Newick Tree

Newick Tree

Iroki reads Newick formatted trees. This is a widely used format for storing phylogenetic and other types of trees in plain text.

Note: If your tree has parentheses in the leaf names, then you will get a Bio::Newick::ParseError. This is from the low level Newick parser that Iroki uses, so for now it cannot be avoided.

((A:1.5,B:1.2),C:0.4,(D:0.6,E:0.67));

You can download this tree here.

When opened in a tree viewer the above tree looks like this

Further reading

• An overview of the Newick format
• A formal spec of the Newick format
• The wikipedia article about the Newick format