Documentation Home
MySQL 5.7 Reference Manual
Related Documentation Download this Manual
PDF (US Ltr) - 35.5Mb
PDF (A4) - 35.5Mb
PDF (RPM) - 34.5Mb
EPUB - 8.7Mb
HTML Download (TGZ) - 8.5Mb
HTML Download (Zip) - 8.5Mb
HTML Download (RPM) - 7.3Mb
Eclipse Doc Plugin (TGZ) - 9.3Mb
Eclipse Doc Plugin (Zip) - 11.5Mb
Man Pages (TGZ) - 201.5Kb
Man Pages (Zip) - 306.8Kb
Info (Gzip) - 3.3Mb
Info (Zip) - 3.3Mb
Excerpts from this Manual

12.5.2.13 MultiPolygon Class

A MultiPolygon is a MultiSurface object composed of Polygon elements.

MultiPolygon Examples

  • On a region map, a MultiPolygon could represent a system of lakes.

MultiPolygon Assertions

  • A MultiPolygon has no two Polygon elements with interiors that intersect.

  • A MultiPolygon has no two Polygon elements that cross (crossing is also forbidden by the previous assertion), or that touch at an infinite number of points.

  • A MultiPolygon may not have cut lines, spikes, or punctures. A MultiPolygon is a regular, closed point set.

  • A MultiPolygon that has more than one Polygon has an interior that is not connected. The number of connected components of the interior of a MultiPolygon is equal to the number of Polygon values in the MultiPolygon.

MultiPolygon Properties

  • A MultiPolygon is a two-dimensional geometry.

  • A MultiPolygon boundary is a set of closed curves (LineString values) corresponding to the boundaries of its Polygon elements.

  • Each Curve in the boundary of the MultiPolygon is in the boundary of exactly one Polygon element.

  • Every Curve in the boundary of an Polygon element is in the boundary of the MultiPolygon.


User Comments
Sign Up Login You must be logged in to post a comment.