SpatialWare also holds geometric features that are aggregates, called spatials.
A spatial is a compound containing zero or more of the following: spatialware_point, spatialware_line, spatialware_arc, spatialware_ellipse, spatialware_curve, or spatialware_polygon. All components of spatials that are read from SpatialWare are output in separate features. Each feature that was a component of a spatial will have the following special attributes on them, assisting in aggregating or re-combining the spatial in the mapping file if necessary:
|
Attribute Name |
Contents |
|
spatialware_spatial_id |
An integer ID given to all members of the same spatial. All members of different spatials will have different IDs; all members within the same spatial will share this ID. |
|
spatialware_spatial_order_id |
This integer ID specifies what place in the spatial order the feature occupied. This value will be zero for the first feature in a spatial. |
|
spatialware_spatial_centroid_x |
The entire spatial’s centroid X location. |
|
spatialware_spatial_centroid_y |
The entire spatial’s centroid Y location. |
|
spatialware_spatial_centroid_z |
The entire spatial’s centroid Z location. |
|
spatialware_spatial_is_assembled |
YES if the spatial is assembled. NO if otherwise. |