Find close edges to use with with points function

[cvvergara]

I can imagine that the with points functions are used with points that come from a front end and not necessarily from a points of interest table.

This function would work as in this example:

SELECT * FROM pgr_withPoints(
  $e$ SELECT * FROM edges $e$,
  $p$ SELECT edge_id, round(fraction::numeric, 2) AS fraction, side
      FROM pgr_findCloseEdges(
        $$SELECT id, geom FROM edges$$,
        (SELECT ST_POINT(2.9, 1.8)),
        0.5, cap => 2)
  $p$,
  1, ARRAY[-1, -2]);
 seq | path_seq | end_pid | node | edge | cost | agg_cost
-----+----------+---------+------+------+------+----------
   1 |        1 |      -2 |    1 |    6 |    1 |        0
   2 |        2 |      -2 |    3 |    7 |    1 |        1
   3 |        3 |      -2 |    7 |    8 |  0.9 |        2
   4 |        4 |      -2 |   -2 |   -1 |    0 |      2.9
   5 |        1 |      -1 |    1 |    6 |    1 |        0
   6 |        2 |      -1 |    3 |    7 |    1 |        1
   7 |        3 |      -1 |    7 |    8 |    1 |        2
   8 |        4 |      -1 |   11 |    9 |    1 |        3
   9 |        5 |      -1 |   16 |   16 |    1 |        4
  10 |        6 |      -1 |   15 |    3 |    1 |        5
  11 |        7 |      -1 |   10 |    5 |  0.8 |        6
  12 |        8 |      -1 |   -1 |   -1 |    0 |      6.8
(12 rows)

Also the function could be used to help create a points of interest table (using the sample data of the documentation):

CREATE TABLE pointsOfInterest(
    pid BIGSERIAL PRIMARY KEY,
    edge_id BIGINT,
    side CHAR,
    fraction FLOAT,
    geom geometry,
    newPoint geometry
);
CREATE TABLE


INSERT INTO pointsOfInterest (geom) VALUES
(ST_POINT(1.8, 0.4)),
(ST_POINT(4.2, 2.4)),
(ST_POINT(2.6, 3.2)),
(ST_POINT(0.3, 1.8)),
(ST_POINT(2.9, 1.8)),
(ST_POINT(2.2, 1.7));
INSERT 0 6



UPDATE pointsOfInterest AS p SET
  edge_id = q.edge_id,
  side = q.side,
  fraction = q.fraction,
  newPoint = ST_endPoint(q.edge)
FROM (SELECT * FROM pgr_findCloseEdges(
  $$SELECT id, geom FROM edges$$,
  (SELECT array_agg(geom) FROM pointsOfInterest),
  0.5, min => false)) AS q
WHERE p.geom = q.geom;
UPDATE 6