(mysql.info.gz) GIS class geometrycollection

Info Catalog

(mysql.info.gz) GIS class polygon

(mysql.info.gz) OpenGIS geometry model

(mysql.info.gz) GIS class multipoint

 
 18.2.8 Class `GeometryCollection'
 ---------------------------------
 
 A `GeometryCollection' is a geometry that is a collection of one or more
 geometries of any class.
 
 All the elements in a `GeometryCollection' must be in the same Spatial
 Reference System (that is, in the same coordinate system).  There are
 no other constraints on the elements of a `GeometryCollection',
 although the subclasses of `GeometryCollection' described in the
 following sections may restrict membership. Restrictions may be based
 on:
 
    * Element type (for example, a `MultiPoint' may contain only `Point'
      elements)
 
    * Dimension
 
    * Constraints on the degree of spatial overlap between elements
 
 

Info Catalog

(mysql.info.gz) GIS class polygon

(mysql.info.gz) OpenGIS geometry model

(mysql.info.gz) GIS class multipoint