Return a temporal boolean stating whether two temporal cells are grid neighbours at each instant. The two operands are synchronised.

th3AreNeighborCells(th3index,th3index) → tbool

SELECT th3AreNeighborCells(
  th3index '880326b885fffff@2001-01-01',
  th3index '880326b88dfffff@2001-01-01');
-- t@2001-01-01

Return a temporal directed-edge identifier from an origin/destination pair of temporal cells

th3CellsToDirectedEdge(th3index,th3index) → th3index

SELECT th3CellsToDirectedEdge(th3index '871fa44a8ffffff@2001-01-01',
    th3index '871fa44aeffffff@2001-01-01');
-- 1671fa44a8ffffff@2001-01-01

Return a temporal boolean stating at each instant whether the value is a valid H3 directed edge

isValidDirectedEdge(th3index) → tbool

SELECT isValidDirectedEdge(th3CellsToDirectedEdge(th3index '871fa44a8ffffff@2001-01-01',
    th3index '871fa44aeffffff@2001-01-01'));
-- t@2001-01-01
SELECT isValidDirectedEdge(th3index '871fa44a8ffffff@2001-01-01');
-- f@2001-01-01

Return the temporal origin or destination cell of a temporal directed edge

th3GetDirectedEdgeOrigin(th3index) → th3index

th3GetDirectedEdgeDestination(th3index) → th3index

SELECT th3GetDirectedEdgeOrigin(th3CellsToDirectedEdge(th3index '871fa44a8ffffff@2001-01-01',
    th3index '871fa44aeffffff@2001-01-01'));
-- 871fa44a8ffffff@2001-01-01
SELECT th3GetDirectedEdgeDestination(th3CellsToDirectedEdge(th3index '871fa44a8ffffff@2001-01-01',
    th3index '871fa44aeffffff@2001-01-01'));
-- 871fa44aeffffff@2001-01-01

Return the temporal polygon boundary of each directed edge in a trajectory, as a temporal geography

th3DirectedEdgeToBoundary(th3index) → tgeography

SELECT ST_NPoints(getValue(th3DirectedEdgeToBoundary(
  th3CellsToDirectedEdge(th3index '871fa44a8ffffff@2001-01-01',
    th3index '871fa44aeffffff@2001-01-01')))::geometry);
-- 3