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Write phylogenetic tree object to Newick-formatted file


phytreewrite(File, Tree)

phytreewrite(..., 'Distances', DistancesValue, ...)
phytreewrite(..., 'BranchNames', BranchNamesValue, ...)



Character vector specifying a Newick-formatted file. Enter either a file name or a path and file name supported by your operating system (ASCII text file).

TreePhylogenetic tree object, either created with phytree (object constructor function) or imported using the phytreeread function.


phytreewrite(File, Tree) copies the contents of a phytree object from the MATLAB® workspace to a file. Data in the file uses the Newick format for describing trees.

The Newick tree format can be found at

phytreewrite(Tree) opens the Save Phylogenetic Tree As dialog box for you to enter or select a file name.

phytreewrite(..., 'PropertyName', PropertyValue, ...) calls phytreewrite with optional properties that use property name/property value pairs. You can specify one or more properties in any order. Enclose each PropertyName in single quotation marks. Each PropertyName is case insensitive. These property name/property value pairs are as follows:

phytreewrite(..., 'Distances', DistancesValue, ...)
specifies whether to exclude the distances from the output. DistancesValue can be true (default) or false.

phytreewrite(..., 'BranchNames', BranchNamesValue, ...) specifies whether to exclude the branch names from the output. BranchNamesValue can be true (default) or false.


Read tree data from a Newick-formatted file.

tr = phytreeread('pf00002.tree')

 Phylogenetic tree object with 33 leaves (32 branches)

Remove all the mouse proteins and view the pruned tree.

ind = getbyname(tr,'mouse');
tr = prune(tr,ind);

Write pruned tree data to a file.


Introduced before R2006a

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