Figure 20.   Composite node

Compositing data into larger structures allows for comparing data in tandem, as well as performing operations over multiple data sets to create new information.

An example of this would be creating a composite of two history sources and using the aggregate node to determine the Max value between the two value fields for each data row. You can use the composite editor to configure the composite schema. Do this by adding fields to the composite schema and then setting the values as fields from one of the source schemata.

Figure 21.   Composite Editor

When you click the Add button (lay), an empty text field and option list open in the editor. To complete the addition of a field, first type a unique name in the text property for the schema field, then select an input field from the drop-down list. Each field in the option list is a field from one of the incoming schemata.

The Composite Editor includes an Auto button () in the top right corner of the editor. Clicking this button populates the composite schema with fields from each incoming schemata, automatically supplying unique field names.