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1. #Geographical Labels
2. #Geographical Fields (WKT Points, and sometimes Polygons)
3. #Demographic Metrics

GeoPacks are structured to have one or more levels of geographical data. When there are multiple levels, the data will be structured in a logical hierarchy. Each level of the hierarchy will contain Geographical Labels of different formats and a Geographical Field containing a WKT Point (and sometimes a Polygon). The pack will may also have Demographic Metrics, which will be associated with the lowest level of the hierarchy which are automatically aggregated up depending on which hierarchy level you are using at the time.

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These label fields are used to link the pack data to your source data, and as such you must select the label that matches the formatting in your source database. For example, if you're linking on State field and your data is stored as VIC, you would link on the State Code field. If your data is stored as Victoria, you would link on the State Label field.

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Once a pack is linked, using Geographical Label fields, the Geographical Fields become available for reporting use. Each level of the pack hierarchy contains one Geographical Field. This field contains a centroid WKT Point, and may also contain WKT Polygons, depending on the pack design. The Geographical Field can be selected by a user and added to a map, and depending on the map type, Yellowfin will choose to use either the Point OR Polygon (where available).

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