Graph node
This node/feature is available only if it is enabled in the PolyAnalyst Server license.

The Graph node generates an interactive network-like graph of relationships between the values of two categorical columns. The relationships are based on the support, or co-frequency, of values across varying numbers of records in the input dataset. The resulting graph is customizable and easy to interpret.

The Graph node is in many ways similar to the Link Chart node. The two nodes have very similar configuration options, the same output (graph), and use the same method of data visualization. Users experienced with the Link Chart node will find the Graph node relatively simple to work with.

Relations found by the Graph node are bi-directional. Irrespective of the column a value appears in, it can be involved in a relationship. The measure of support calculated for each relationship works both ways and does not vary depending on the side of the relationship you are currently exploring. If the same value appears in the source and target point of a relationship, it will still count as a distinct value.

In a real-case scenario, the Graph node can be used to analyze the chain of communications between people.

For example, if you keep a table of emails, you can explore the network of interaction between people sending emails to each other. Each time an act of communication occurs, a new relationship is registered by the Graph node and included in the output for further analysis. The node report will reveal people that have a large breadth of communication, i.e. those who communicate actively. You can also single out pairs with the extensive communication between participants when compared to others. Pick an individual in the network to get the information on the number of messages exchanged with others and learn about the least and most prominent recipients. The propagation of links over the network also allows you to identify the chain of communication.

Flowchart connections

The Graph node requires a single incoming connection with the node that generates a dataset, such as a data source, row, column or table operation node.

Like most visualization nodes, the Graph node is a terminal node that generates a chart as a report. The node can be used as a parent to an Export to Image node (to save the chart to a PNG or PDF file) and Generic Dataset node (to present results in the tabular form).