Average Overlay

Purpose of the Average Overlay

A typical use-case of the Average Overlay is to display model data used in visualize parameters part of a simulation model (e.g. the rainfall overlay). A parameter assigned to a grid-cell can be related to one or more polygon layers. Such layers can be buildings, terrain, areas or neighborhoods.

Steps to generate an Average Overlay:

1. Go to the overlays tab, and select Add Avg
2. Step 1: Choose a selection type: If you wish to create a spatial smooting, press Create an average Grid Overlay, if you wish to Gain insight into Grid Cell Values, press the latter option
3. Step 2: Select an attribute value you wish to visualize: By pressing select you can select from a long list of attributes
4. Step 3: Select, Select Layer: Attributes can be assigned to one of more polygon data layers: buildings, Terrains, Areas and Neighborhoods. In this step you can select the following options for assigning parameter values:

• Filter occurrence in Layers: an attribute value is selected from order of occurrence in the polygon data layer value mentioned above
• Minimum values in Layers. The minimum value is selected from all layers above
• Maximum values in Layers. The maximum value is selected from all layers above
• Specific Layer only. A specific layer can be selected.

1. Step 4: Only when selected Create Grid Overlay in Step 1: a smoothing distance value

Press finish to generate the average overlay