A Series Transform Graph is a node container that can hold all other graph nodes. The transform graph node itself is also a graph node, making it possible for transform graphs to contain other transform graphs. This allows transform graphs to be created to fulfill very specific data functionality and used as building blocks to create larger graphs.
After you add a Transform Graph node to your station, you can double-click on it to display the node’s default wiresheet view for configuration of the graph. When properly configured, the Series Transform Graph performs a transformation or series of transformations against a set of data to produce a single result.
Note the following summary information about Transform Graph Nodes:
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Transform Graph nodes must contain a single Terminal node plus one or more source nodes to define the schema of the data. Source nodes may be HistorySource nodes or other Transform Graph nodes.
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Each Transform Graph node returns a single result and thus contains a single Terminal node.
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Transform Graph nodes may contain one or more Transformation-type nodes, such as the Aggregate, Rollup, Scale, or Composite nodes.
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Transform Graphs may be included as transformations within other Transform Graphs.
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To “resolve” a configured Transform Graph node in Workbench (to see a table view of the source data) right-click on the Transform Graph node in the nav tree and select from the popup menu.
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To see a configured Transform Graph node as a chart or as a table in a Px page, use the PxEditor Make Widget Wizard (refer to Series Transform components).
The following illustrations show some example Transform Graph implementations.
