ST_IsLineStringCCW
Signature
Parameters
ColumnOrName
required
LineString geometry column to check.
Returns
Column
True if the coordinate sequence is counter-clockwise and False otherwise.
Accessors
ST_IsLineStringCCW (Python)
Check whether a LineString coordinate sequence has counter-clockwise ring orientation.
Check whether a LineString coordinate sequence has counter-clockwise ring orientation.
Open LineStrings are evaluated as supplied, without appending the start
coordinate. Non-LineString geometries and LineStrings with fewer than four
points return False.
SQL reference: