It's a Newick tree parser:
http://en.wikipedia.org/wiki/Newick_format
This code is based on the TreeJuxtaposer project at:
http://olduvai.sourceforge.net/tj/index.shtml
Only the tree parsing is left from in this project.
BufferedReader fileReader = new BufferedReader(new InputStreamReader(new FileInputStream(nwkFile), "UTF-8"));
TreeParser tp = new TreeParser(fileReader);
Tree nwkTree = tp.tokenize("Newick Tree");
Be careful when choosing a version, the contract might change between, read the javadoc for the specific version.
Below you will find the old readme from the TreeJuxtaposer project. It is probably not very relevant anymore.
TreeJuxtaposer Readme October 18, 2007 Version 2.1 http://olduvai.sf.net/tj Contact email: olduvai-devel@lists.sf.net
Contents:
1 What is TreeJuxtaposer? 2 Running TreeJuxtaposer 2.1 Webstart 2.2 JAR files 2.3 Compiled source 2.4 Command-line arguments 3 Mouse Interaction 4 Searching 5 Groups Panel 6 Settings Panel 7 Tree editing (new in TJ 2.1!) 8 Keyboard shortcuts for users 9 Developer commands 10 Compilation tools 11 Version Information 11.1 v1.0 11.2 v1.1 11.3 v1.2 11.4 v1.3 11.5 v2.0 11.6 v2.1 12 Contributors
1 What is TreeJuxtaposer? TreeJuxtaposer is an application for browsing trees and comparing them side by side. Although it was originally designed to support phylogenetic trees, it can be used on trees in any application domain.
Our AccordionDrawer technique for multiscale drawing allows fluid interaction even for very large trees, with guarantees on frame rate and the visibility of marked sections. The zoomable interface lets you stretch out parts of the tree you want to see in detail and the rest of the tree will be squished to make room. You can have more than one focus area at a time.
2 Running TreeJuxtaposer
Use any one of the following three options to get TreeJuxtaposer running:
2.1 Webstart Click on the tj webstart icon
2.2 JAR Files Download a tj.jar file, the jogl library files jogl.jar and gluegen-rt.jar, and native library jogl.so, and type on a command line (Linux/Mac command line shown):
"java -cp jogl.jar:gluegen-rt.jar:tj.jar
net.sourceforge.olduvai.TreeJuxtaposer.treejuxtaposer
[<file1> ... <fileN>]"
or run the provided executable script, which performs that command:
"TJ.sh [<file1> ... <fileN>]"
The building scripts found in the TreeJuxtaposer package will download the source
and compile it to a JAR file, visit http://jogl.dev.java.net for the jogl packages.
2.3 Compiled source From the command line, if you compiled TJ yourself or from the script buildTAR.sh: "java net.sourceforge.olduvai.treejuxtaposer.TreeJuxtaposer [ ... ]"
2.4 Command-line arguments Several command line arguments are valid for JAR file and compiled source running. The order of arguments is not important.
Loading two or more trees allows side-by-side comparison. You can also
load only a single tree to use TJ as a browsing viewer. You can load
files either by specifying them as command line arguments or using the
"File->Open" menu option with the running program. Trees can later be
unloaded with the "File->Delete" menu option.
The accepted file formats are Newick/New Hampshire (nodes delimited by parentheses and commas, the format of a Nexus tree block), or Nexus. Interior node labels are allowed. Edge lengths are ignored, and all trees are drawn with aligned terminal nodes (leaves). The type of file is automatically detected. You can optionally include integers after a Nexus filename specifying which trees from the file to load if you load the Nexus file with the "-x" argument. You will be asked which trees in the Nexus file that you want to use if you don't specify numbers on the command line.
You may need to specify the native library explicitly if jogl is not installed in a default java library. To specify the path to the jogl native libraries, type "java -Djava.library.path= ...".
Additional arguments:
-f Use fully qualified node names for performing best corresponding node operations. This will make trees with internal labels have unique names for leaves that have similar names. Especially useful for file system trees that may contain a similarly named file in each branch.
-nostructdiff Start TreeJuxtaposer without structural differences. This may speed up loading as structural differences for large trees that are not similar. Differences may be turned on later.
-x n1 [n2 ... nX] Select a subset of trees from a Nexus file that may contain several trees. [n1..nX] are integers from 1 to the number of trees in file .
3 Mouse Interaction
Moving the mouse over an edge highlights the node under the cursor in orange, and also the "best corresponding node" (BCN) to that node in all other trees. You will also see a light grey outline around the entire subtree beneath the mouseover node.
If you hold down the shift key, the box around the clade gets thicker and you can resize it - when you start to drag the mouse, whatever corner is closest to the mousedown point will move. The rest of the scene will change shape accordingly, and other windows will also resize in linked navigation mode (on by default). The same action is available by pressing 't' to mark the clade.
You can also change shape by directly drawing a rectangle on the screen, and moving its boundaries in the same way. Drag out a rectangle, then drag one of the corners to make it larger or smaller.
4 Searching
Selecting the Find menu item opens the Find window. By default, the entire list of labels appears in the top window. When you type in the box on the bottom, that list will be filtered to contain only the items that contain that substring. The search results will also be highlighted with guaranteed visibility (default color is magenta).
5 Groups Panel
You can use the Groups panel to resize groups or create new ones using the mouse. There are twelve groups. Eight of them are computed by the system: mouseover (the object currently under the mouse, default color orange), differences (computed structural differences, default color red), found (search results, default color magenta), and LCA (least common ancestor of all items in group, default color dark green). Eight of them are selected by the user, with default colors of blue, green, cyan, purple, yellow, brown, pink, and red.
You put an item in the current mark group by hitting 'm' when the mouse is over the item. To add items to the current mark group instead of replacing them, hit 'M' (shift-m). You can control with Mark Resolution radio buttons whether you mark just the node under the mouse, or the entire subtree beneath it (the default). You can change which group is the current mark group using the radio buttons on the bottom part of the panel.
The Bigger and Smaller buttons operate on all items of any group, resizing the whole forest of subtrees if the group contains more than one contiguous subtree. By default they only affect the vertical extent, but you can switch to just horizontal or both using the radio buttons. The reset button returns the view to the default overview position.
You can change the color of a group by hitting the colored square button. You can also clear just the currently active group (the one whose radio button is on) with the "Clear group" button, or all marks with the "Clear all" button. The found group is special: you can only clear it by erasing the text from the box at the bottom of the found panel.
6 Settings Panel
The Line Width slider controls the width of the tree edges, the default is one pixel wide. The Label Density slider controls how densely the labels are drawn on the screen, the default is near-maximum.
You can set the minimum and maximum font size. You can toggle on and off the computed structural differences, the labels, and linked navigation between all the tree windows.
You can control whether either the marks or the grey edges are automatically dimmed: saturation is controlled by the size of the screen area subtended by the subtree, and brightness is controlled by the depth in the tree. By default this feature is turned off for marks.
The BCN score controls the level at which differences are marked. By default they're all marked, moving the slider to the right raises the threshold of difference.
7 Tree editing (new in 2.1!)
The node names can be changed interactively by pressing 'x', which opens a window that allows you to change the name that appears on the highlighted node. The changes can be saved to a new tree through the File->Save menu option. If several trees are loaded and save is selected, the trees will be automatically named. For example, if a user loads three trees and saves them with the name "ChangedTrees.tre", then the three trees will be named, ordered from left to right:
"ChangedTrees.tre", "ChangedTrees_1.tre", and "ChangedTrees_2.tre".
8 Keyboard shortcuts for users
Alphabetic listing. Keys that act with state or key combinations are marked with a (*), and are described in more detail below this listing:
space redraw 0-7* group to make active for growing and shrinking (b or s), or clearing (c) a* select all marked groups for clearing, and/or growing and shrinking in both directions, and clades for marking b* grow current group bigger c* clear marks in current group d select differences for growing and shrinking e exit interaction box resizing mode f select mouse-over interaction for growing and shrinking g* select next group, or previously selected group h* select horizontal mode for resizing k toggle whether trees move together with linked navigation (default=on) l select found group (text search marks) for growing and shrinking m mark current node or clade in current user-marking group (single node/subtree) M add current node or clade to current set of user-marking group marks n* select nodes for marking, as opposed to whole clades r reset tree to initial stretching view s* shrink current group smaller t enter quasi-mode, similar to holding shift while selecting a node for linked navigation u show or hide structural differences v* select vertical mode for resizing w show or hide labels x edit the current label
Compound key combinations. These change some internal state value, which can be observed through the graphical interface (settings and state panels), then perform the action:
Mark what's under mouse, in active group color m : mark subtree (default case) [t] m : mark taxon [n] m : mark taxon as above, but mnemonic is 'node' instead of 'taxon'
if you hold down shift key (M), add to active group instead of replace
Change active group (i.e. switch to new mark color) g : DEFAULT: change active mark group to next one (i.e. g++) [0-7] g : change active mark group to the one specified
Clear marks c : DEFAULT: clear active group [0-7] c : clear specific group [a] c : clear all groups (except the found group)
Change size of group [hva] b : make it bigger, in either horizontal or vertical or all directions [hva] s : make it smaller, in either horizontal or vertical or all directions. Default: vertical.
(if the group is a forest, only one of the subtrees will be highlighted with a box, but all will resize with b or s. when you drag with the mouse, only the boxed subtree will change size.
9 Developer commands
There are some developer/debugging commands, some of which can be accessed from the GUI, that require a two-key sequence. Each shortcut here can be accessed by first hitting '.', then one of the keys below:
B toggle drawing label background C toggle dim/bright group marks (lower in hierarchy less saturated if bright) D toggle dim/bright normal marks (lower in hierarchy less saturated if bright) eE grow/shrink the minimum font size g toggle drawing the background grid H toggle flash drawing j toggle animated transition jumping mM grow/shrink the label buffer size N redraw all R toggle label drawing position for leaves T toggle drawing geometry (tree edges) wW grow/shrink tree edges xX grow/shrink maximum font size z toggle drawing the background grid (identical to g)
10 Compilation tools
Compilation tools have been provided, but may require some modification to point to scripts at the required library files. The script expects the manifest file, jogl jar files, jogl native libraries, and the source to be in the current directory. Constants found at the start of the script can be modified to point to these files on your system setup. The build scripts, and manifest.tj file, should be moved to a new directory prior to running, and appropriate jogl libraries should be copied to the appropriate directory. Both scripts download the current source from the subversion SourceForge repository prior to building, and packaging.
From the command line:
./buildJAR.sh This script builds the TreeJuxtaposer jar file with a current date stamp, such as "tj-20071015.jar". The jar file contains only compiled resources that are necessary to run TreeJuxtaposer. This file can be run following steps in section 2.2 of this document.
./buildTAR.sh This script builds the TreeJuxtaposer tar file with a current date stamp, such as "tj-20071015.tar.gz". This file contains the javadoc documentation, original source, and compiled resources. The contents of this file can be run following the steps in section 2.3 of this document, or loaded into a development suite for modification.
11 Version Information
11.1 v1.0
- released January 11, 2004
- original code, uses quadtrees
- limited to approximately 500,000 total tree nodes in 1.5G heap memory
- published (SIGGRAPH 2003, Munzner, et al.)
11.2 v1.1
- released June 25, 2004
- updated documentation
- splitLine code for drawing, resizing, picking, culling
- limited to approximately 2 million total tree nodes in 1.5G heap memory
- flexible structure for use in future accordion drawing packages
11.3 v1.2
- released October 19, 2004
- bug fix release:
- tree marking fixes (1-to-many marking now works)
- nexus file loading/unloading fixes
11.4 v1.3
- released February 8, 2005
- line width tied to leaf traversal (thicker lines, more line overlap)
- limited to approximately 3 million total tree nodes in 1.5G heap memory
- peak scene rendering time of approximately 600ms:
- Pentium4 3Ghz, 800x600, 3 million tree nodes, line width 1
11.5 v2.0
- released February 2, 2005
- gl4java -> jogl v1.1.1 migration (opengl graphics libraries)
- webstart application support
11.6 v2.1
- released October 18, 2007
- automatic detection of nexus and newick formats with new data file parser
- new package structure: drawer and application
- application package includes tree drawing package
- smoother font rendering
- subtree shrinking bug fix
- tree node label editing interface
- save changed labels to a new file
- fully documented functions and variables in javadoc standard format
Contributors and Authors
James Slack www.cs.ubc.ca/~jslack (2003-) Tamara Munzner www.cs.ubc.ca/~tmm (2001-)
Kristian Hildebrand www.uni-weimar.de/~hildebr2 (2003-2004) Francois Guimbretiere www.cs.umd.edu/~francois (2001-2003) Serdar Tasiran network.ku.edu.tr/~stasiran (2001-2003) Li Zhang www.hpl.hp.com/personal/Li_Zhang (2001-2003) Yunhong Zhou www.yunhongzhou.com (2001-2003) Zhihui Jeffrey Zhang (2003)