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This function checks if a geometry is a valid trajectory representation. For a trajectory to be considered valid, it must be a LineString that includes measure (M) values. The key requirement is that the M values increase from one vertex to the next as you move along the line. ST_IsValidTrajectory

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Signatures

ST_IsValidTrajectory(geom: Geometry)

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Parameters

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geom
Geometry
required
The input geometry.

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Return type

Returns true or false.

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Examples

SELECT ST_IsValidTrajectory(
               ST_GeomFromText('LINESTRING M (0 0 1, 0 1 2)')
)

true

SELECT ST_IsValidTrajectory(
               ST_GeomFromText('LINESTRING M (0 0 1, 0 1 0)')
)

false