The illustration below shows examples of MultiLineString instances.

As shown in the illustration:

• Figure 1 is a simple MultiLineString instance whose boundary is the four endpoints of its two LineString elements.
  
• Figure 2 is a simple MultiLineString instance because only the endpoints of the LineString elements intersect. The boundary is the two non-overlapping endpoints.
  
• Figure 3 is a nonsimple MultiLineString instance because the interior of one of its LineString elements is intersected. The boundary of this MultiLineString instance is the four endpoints.
  
• Figure 4 is a nonsimple, nonclosed MultiLineString instance.
  
• Figure 5 is a simple, nonclosed MultiLineString. It is not closed because its LineStrings elements are not closed. It is simple because none of the interiors of any of the LineStrings instances intersect.
  
• Figure 6 is a simple, closed MultiLineString instance. It is closed because all its elements are closed. It is simple because none of its elements intersect at the interiors.
  

The following example creates a simple geometry MultiLineString instance containing two LineString elements with the SRID 0.

DECLARE @g geometry;
SET @g = geometry::Parse('MULTILINESTRING((0 2, 1 1), (1 0, 1 1))');

To instantiate this instance with a different SRID, use STGeomFromText() or STMLineStringFromText(). You can also use Parse() and then modify the SRID, as shown in the following example.

DECLARE @g geometry;
SET @g = geometry::Parse('MULTILINESTRING((0 2, 1 1), (1 0, 1 1))');
SET @g.STSrid = 13;

Concepts

Other Resources

Help and Information