by Roderic Page
COMPONENT Lite is a stripped-down Macintosh version of the program
COMPONENT 2.0 (which runs on Windows PCs) (Page, 1993). It implements
a range of tree comparison and consensus methods.
Please be patient with the program as it is still in a
very early stage of development! If you download the program please send me an email message so that I can keep you posted about new releases.
At present COMPONENT Lite is only available for the PowerMacintosh (a Windows version is under development).
Download COMPONENT Lite for PowerMacintosh
Below is a very brief guide to the program. Despite differences from COMPONENT 2.0, you may find the manual to that version to be useful as many of the features (and underlying algorithms) are the same. If you haven't got a copy of COMPONENT 2.0 the manual is available online. Also available is a set of exercises using COMPONENT Lite that were part of the NERC/Glasgow Taxonomy Course '97.
COMPONENT Lite Exercises
COMPONENT files have the following icon:
You can also open standard NEXUS tree files created by PAUP
and TREEVIEW, and also PHYLIP-style tree files.
- COMPONENT displays trees in a Tree window:
- Depending on information in the tree file, the tree may be
drawn either rooted or unrooted (as above). You can root or unroot
the trees using the Rooting command:
- You can open more than one Tree window at a time. The COMPONENT
commands that open tree windows are Open, and
Execute from the File menu.
- The commands in the Trees menu manipulate the trees
in the currently active tree window. These commands may display
output in the Log window.
COMPONENT Lite features a simple tree editor very similar to the
one in MacClade.
- You can use the tools on the tool bar to rearrange the tree
(move branches, collapse nodes, etc.). You can undo your last
change using the Undo command. To close the tree editor
click on the Close box - if you have altered the tree you will
be asked whether you want to save the changes that you have made.
- Another handy feature of the editor is that you can copy the
tree to the Clipboard in nested parentheses format, which can
then be pasted into an Edit window.
Input files can be created and edited in an Edit window. The file
being edited can be saved, renamed, printed, and processed using
commands on the File menu. COMPONENT Edit windows support
the Undo, Cut, Copy, and Paste commands
found in all Macintosh text editors.
If you choose Execute from the File menu the file
you are editing will be processed and, if successful, the trees
will be displayed in a tree window. If COMPONENT encounters an
error while processing a file it will highlight the location of
the error in the edit window.
COMPONENT 2.0 for Windows is available from the Natural History
Museum, London. More information can be obtained from the COMPONENT Web site. COMPONENT Lite is not yet available for general release.
This page last updated 30 October 1997.