1 LGL – Large Graph Layout LGL is a compendium of applications for making the visualization of large networks and trees tractable. LGL was specifically motivated by the need to make the visualization and exploration of large biological networks more accessible. Essentially the network is a graph, which is the data that you define, and LGL is responsible for showing it to you. source: http://sourceforge.net/projects/lglhttp://sourceforge.net/projects/lgl

2 LGL - Features ● Scalable generation - > 5 million edges in some graphs (source: http://www.opte.org/maps/)http://www.opte.org/maps/ ● 2D and 3D layout – 3D layout output as VRML, requires viewer – 2D layout requires rudimentary Java viewer ● Source code available for generator and viewer ● Linux only, with GNU compilers

3 LGL - Features, cont. ● Submit edge file, get coordinates of layout ● Can assign color, description to vertices, edges ● Unknown animation options, if any

4 source: http://www.opte.org/ The Opte Project – modeling the Internethttp://www.opte.org/

5 A Protein Homology Graph (32,727 Proteins with 1,206,654 Edges). Color coded based on layout hierarchy. source: http://lgl.sourceforge.net/http://lgl.sourceforge.net/

6 Zoomed Region of the Yeast Protein Interaction Map in 3D (VRML)