How to map Component Table attributes
These instructions explain how to prepare data stored in the CLI Component Table for mapping.
It is not appropriate to map the primary component in each polygon, since this component will not necessarily share the dominant attribute of the polygon. Choropleth mapping of the primary component will produce deceptive results! The following table is used to illustrate this point.
|CLASS||Subclass 1||...other attributes|
If the first component is used to map CLI polygon "1", it would be 40% class "3" whereas class "1" covers a larger percentage (60%) of CLI polygon "1". To correctly map data in the Component Table, the percent occurrence field must be summarized by the values of the relevant field, as shown in Table 2.
There are three ways in which this data can be mapped:
1. The dominant value (where the Class field is mapped)
2. The percentage distribution of a value (where the Percent Occurrence field is mapped)
|CLI||Percent Occurrence||Percent Distribution
3. Queries of the Component Table (ie All Class 1 that are also subclass P are higlighted in yellow)
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