Extracts the subtree under a given node in a tree file tabbed format. See tree_cvt command for converting a Newick tree to tabbed format. The node is specified as its integer node index in the tabbed file.
The -newickout option specifies an output file in Newick format.
The -tabbedout option specifies an output file in tabbed format.
Example
usearch -subtree big.tree -node 123 -newickout sub.tree