This tutorial introduces VisANTís basic capabilities to use metagraph to create the multi-scale network.

1. load the network into VisANT by click here.

Note: the network we used here is a simplified version of the original network, which is available at: http://visant.bu.edu/sample/visml_files/broad_bridging.zip. The reason to use the simplified version of the network here is because that the default memory assigned to java is not large enough to handle the network. In such case, you can download VisANT, and run it with command line such as:

java -Xmx512M -classpath  VisAnt.jar cagt.bu.visant.VisAntApplet

where 512M is the maximum size of the memory that java can use. The full-size network can then be loaded by open the above URL through the menu Files/Open URL.

Note: VisANT can directly load the zipped file.

2. once the network is loaded, select the cluster that has not been grouped by dragging a rectangular as shown below.



3. group the selected cluster into a metanode by either pressing the key CTRL+G or the menu MetaGraph/Grouping/Group Selected Nodes.

4. mouse-click on the empty space to make sure that no nodes is selected, and then using circle layout (menu Layout/Circle Layout) to layout the network.

Note: for those that has * in the layout menu, the layout will be performed recursively when no nodes is selected.

5. click the button Fit to Page (click twice if necessary), you will get a network similar to following:



6. collapse all metanodes through the menu MetaGraph/MetaNode/Collapse All, and the network becomes:



7. expand all the metanodes through the menu MetaGraph/MetaNode/Expand All. Then select all metanodes through the menu Edit/Select Metanodes/All, ungroup the selected metanodes through the menu MetaGraph/Grouping/Ungroup Selected Nodes. The network becomes better looking in comparison to its original one:



8. The metanodes can also be created through the extended edge-list, check out here for more detail