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Cover is defined by a set of attributes, which inform about their particulars characteristics.

You can design queries that show the polygon’s results which contain some attributes. This attributes can be associated to a cover or be independents.

Attributes are of two different types:

•Logistic or Boolean attribute: They only accept true or false values, for example: “Plantation” or “High Mountain”.

•Discrete attributes (not logistic): They accept a set of values. For example: “Building Typology” has different values as “Isolated building”, “attached buildings”, “naves”, etc.

To introduce a condition related to an attribute, first of all you must select if the operation is equality or if the outcomes must not contain the attribute that are going to be selected (See Condition Operators I).

Attributes are linked with coverage. When a cover is selected by an equality operation, it will points out that attributes are linked to this cover by a help icon. If that the attribute operation is an equality, you have to select a linked element if you want to obtain a result for this query.