aiSee

aiSee reads a textual, easy-to-read and easy-to-learn graph specification and automatically calculates a customizable graph layout. This layout is then displayed, and can be interactively explored, printed and exported to various graphic formats.

When working with any kind of complex relational data, visualization provides for much better and faster understanding. Back in 1991, aiSee was developed to visualize the internal data structures typically found in compilers. Today it is widely used in many different areas:

￭ Genealogy (family trees, evolution diagrams, pedigrees) ￭ Business management (organization charts) ￭ Software development (call graphs, control flow graphs) ￭ Hardware design (circuit diagrams, finite state diagrams) ￭ Database management (entity relationship diagrams) ￭ Informatics (algorithm visualization) ￭ Web design (sitemaps, P2P networks)

Here are some key features of "aiSee":

￭ Excellent readability of calculated layouts: ￭ Nodes are placed in a hierarchy of layers ￭ Nodes are positioned without overlapping ￭ Crossing of lines (edges) is reduced/avoided ￭ Edges are kept short and straight ￭ Fast layout calculation for huge graphs ￭ 15 basic layout algorithms, including ￭ Force-directed layout ￭ Depth-first-search layout ￭ Specialized algorithm for layout of trees ￭ Zooming of graphs and easy navigation ￭ Easy printing of graphs on multiple pages ￭ Export of graphs to BMP, colored PostScript, SVG, PNG and HTML ￭ Graph nesting and advanced graph hierarchy operations like ￭ Folding, unfolding, wrapping and clustering of complete subgraphs ￭ Folding of user-defined graph regions ￭ Excluding subgraphs or graph regions ￭ Hiding of edges ￭ Cartesian and polar fish-eye views ￭ Animation of series of graphs and smooth transitions ￭ Multi-line edge labels ￭ Easy handling of huge graphs with as many as 1,000,000 nodes and 1,500,000 edges ￭ Commands, hyperlinks, JavaScript functionality, and up to three additional information windows can be associated with each node and each subgraph ￭ Nodes can be represented by user-defined bitmap icons ￭ The input format GDL (graph description language) provides for very natural textual graph representation, and is also easy to learn.

Limitations:

￭ 30 days trial