Geometry simplification
data-types #tsql#data-types
Description
ToString (geometry Data
Type)
Returns the string representation of a geometry instance augmented with Z
and M values.
These methods access the Z (elevation) and M (measure) values of geometry instances,
supporting 3D and 4D spatial data.
Description
Z (geometry Data Type)
Returns the Z (elevation) value of a geometry instance. Null if not defined.
M (geometry Data Type)
Returns the M (measure) value of a geometry instance. Null if not defined.
HasZ (geometry DataType)
Returns 1 if a geometry instance contains at least one point with a Z value.
HasM (geometry
DataType)
Returns 1 if a geometry instance contains at least one point with an M
value.
These methods provide more control over buffer calculations than the standard OGC STBuffer
method.
Description
BufferWithTolerance
(geometry Data Type)
Returns a geometric object representing all points within a specified
distance from a geometry instance, with explicit tolerance control for
precision.
BufferWithCurves (geometry
Data Type)
Returns a geometry instance representing all points within a specified
distance, preserving circular arc segments in the result.
These methods create simplified versions of geometry instances, useful for performance
optimization and visualization at different scales.
Expand table
Expand table