SankeyDiagramApp - Flex license only

Note: The AVEVA Sankey Diagram OMI App requires an AVEVA Flex license. It is not included in the product installation. If you have a Flex license, see Downloading and Installing the SankeyDiagramApp for installation instructions

A Sankey chart is a flow diagram that shows nodes linked by flows, the quantity of each flow being represented by its width. This chart type emphasizes the major transfers or flows within a system and helps to locate dominant contributions to an overall flow.

In the following example, the volume of water traveling through a water system from source to distribution is displayed. The wider lines indicate larger volumes.

Understanding Sankey diagram data structure

Nodes (horizontal) define the number of organizational categories needed to describe all flows being considered. Typically, the number of levels required is determined by a system's organizational hierarchy. In the above example, the Drinking Water (Potable) Service is organized into four Water Systems (Nodes), including source, treatment, storage and distribution water systems.

Levels (vertical) are the boxes that the items or other measures flow between. In the example above, the Level for each water system type are defined by the number of process categories included for each water system. The Level defined in the example above is described in the following table:

Mappings are the bands visualizing the flow itself. A single Node can be assigned multiple Mappings. Each Mapping has three parameters, a Start Node, End Node and Value. The Value determines the weight of the band linking start and end nodes. Value is defined using the Reference field. The Reference field consists of a reference to an Operations Management Interface (OMI) data point (for example, flow). Using the example above, each Node might be assigned the following parameters: