This function returns the nearest distance between a trajectory object and the specified geometry object within the specified time range.

Syntax

float8 ST_nearestApproachDistance(trajectory traj, tsrange range, geometry g);
float8 ST_nearestApproachDistance(trajectory traj, timestamp t1, timestamp t2, geometry g);

Parameters

ParameterDescription
Parameter Description
traj The trajectory object.
t1 The start time.
t2 The end time.
range The time range.
g The specified geometry object.

Example

Select ST_nearestApproachDistance(traj, '2010-1-1 13:00:00', '2010-1-1 14:00:00', 'LINESTRING(0 0, 5 5, 9 9)'::geometry) from traj_table;