Create a Network Graph
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Make sure that both the node and link data sets have been loaded. For instructions, see Load Data into SAS/GRAPH Network Visualization Workshop.
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Select Graphs
Visualize Network, and then select a layout pattern from the cascading
menu. For descriptions
of the layout pattern, see About Network Graphs. Note the following:
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If you choose the Fixed Position layout style, then you are prompted to open a positions file and to specify which variables in the file correspond to the X and Y axes. For information about the positions file, see Creating a Positions File for a Fixed Position Network Graph.
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If you haven’t already specified the link and node attributes (the FROM, TO, and NODE ID variables), then the Edit Data Attributes dialog box is displayed. For help with this dialog box, see Specify Data Attributes.
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Networks with high depth can cause your system to run out of memory when you attempt to create a network graph. The depth of a network is the number of nodes that are linearly connected (A is connected to B, B is connected to C, C is connected to D, and so on).
SAS/GRAPH Network Visualization Workshop displays a message when system memory has been exceeded. If you receive this type of message, you should close other applications before you try to create the network graph again. The actual maximum number of nodes that can cause this condition varies depending on system resources. Typically, the threshold is a depth of approximately 11,000 nodes.
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You can
fine-tune the layout pattern by adjusting the layout algorithm used
for the graph. For details, see Layout Tab.