Mappable Views

A mappable view is one whose data can be used in a theme or for labeling a map layer. In general, a view is mappable if each record in the joined view corresponds to a single map feature. For this to be the case, the following two conditions must hold:

• The left view must be mappable

• If the join is a one-to-many join, the right records must be aggregated (using the A or A? option to JoinViews() or JoinViewsMulti())

Maptitude always displays the aggregate form of a one-to-many view, so that the resulting joined view is mappable. GISDK lets you control the characteristics of the join more explicitly, making it possible to create joined views that are not mappable.