Datos Muestra

La documentación proporciona consultas de ejemplo muy simples basadas en una red muestra pequeña. Para ser capaz de ejecutar las consultas de la muestra, ejecute los siguientes comandos SQL para crear una tabla con el conjunto de datos de la red.

Crear tabla

CREATE TABLE edge_table (
    id BIGSERIAL,
    dir character varying,
    source BIGINT,
    target BIGINT,
    cost FLOAT,
    reverse_cost FLOAT,
    capacity BIGINT,
    reverse_capacity BIGINT,
    category_id INTEGER,
    reverse_category_id INTEGER,
    x1 FLOAT,
    y1 FLOAT,
    x2 FLOAT,
    y2 FLOAT,
    the_geom geometry
);

Insertar datos

INSERT INTO edge_table (
    category_id, reverse_category_id,
    cost, reverse_cost,
    capacity, reverse_capacity,
    x1, y1,
    x2, y2) VALUES
(3, 1,    1,  1,  80, 130,   2,   0,    2, 1),
(3, 2,   -1,  1,  -1, 100,   2,   1,    3, 1),
(2, 1,   -1,  1,  -1, 130,   3,   1,    4, 1),
(2, 4,    1,  1, 100,  50,   2,   1,    2, 2),
(1, 4,    1, -1, 130,  -1,   3,   1,    3, 2),
(4, 2,    1,  1,  50, 100,   0,   2,    1, 2),
(4, 1,    1,  1,  50, 130,   1,   2,    2, 2),
(2, 1,    1,  1, 100, 130,   2,   2,    3, 2),
(1, 3,    1,  1, 130,  80,   3,   2,    4, 2),
(1, 4,    1,  1, 130,  50,   2,   2,    2, 3),
(1, 2,    1, -1, 130,  -1,   3,   2,    3, 3),
(2, 3,    1, -1, 100,  -1,   2,   3,    3, 3),
(2, 4,    1, -1, 100,  -1,   3,   3,    4, 3),
(3, 1,    1,  1,  80, 130,   2,   3,    2, 4),
(3, 4,    1,  1,  80,  50,   4,   2,    4, 3),
(3, 3,    1,  1,  80,  80,   4,   1,    4, 2),
(1, 2,    1,  1, 130, 100,   0.5, 3.5,  1.999999999999,3.5),
(4, 1,    1,  1,  50, 130,   3.5, 2.3,  3.5,4);

Actualización de la geometría


UPDATE edge_table SET the_geom = st_makeline(st_point(x1,y1),st_point(x2,y2)),
dir = CASE WHEN (cost>0 AND reverse_cost>0) THEN 'B'   -- both ways
           WHEN (cost>0 AND reverse_cost<0) THEN 'FT'  -- direction of the LINESSTRING
           WHEN (cost<0 AND reverse_cost>0) THEN 'TF'  -- reverse direction of the LINESTRING
           ELSE '' END;                                -- unknown

Topología

  • Antes de probar una función de ruteo, utiliza esta consulta para crear una topología (rellena las columnas source y target).
SELECT pgr_createTopology('edge_table',0.001);

Puntos de interés

CREATE TABLE pointsOfInterest(
    pid BIGSERIAL,
    x FLOAT,
    y FLOAT,
    edge_id BIGINT,
    side CHAR,
    fraction FLOAT,
    the_geom geometry,
    newPoint geometry
);

INSERT INTO pointsOfInterest (x, y, edge_id, side, fraction) VALUES
(1.8, 0.4,   1, 'l', 0.4),
(4.2, 2.4,  15, 'r', 0.4),
(2.6, 3.2,  12, 'l', 0.6),
(0.3, 1.8,   6, 'r', 0.3),
(2.9, 1.8,   5, 'l', 0.8),
(2.2, 1.7,   4, 'b', 0.7);
UPDATE pointsOfInterest SET the_geom = st_makePoint(x,y);

UPDATE pointsOfInterest
    SET newPoint = ST_LineInterpolatePoint(e.the_geom, fraction)
    FROM edge_table AS e WHERE edge_id = id;

Restricciones

CREATE TABLE restrictions (
    rid BIGINT NOT NULL,
    to_cost FLOAT,
    target_id BIGINT,
    from_edge BIGINT,
    via_path TEXT
);

INSERT INTO restrictions (rid, to_cost, target_id, from_edge, via_path) VALUES
(1, 100,  7,  4, NULL),
(1, 100, 11,  8, NULL),
(1, 100, 10,  7, NULL),
(2,   4,  8,  3, 5),
(3, 100,  9, 16, NULL);

CREATE TABLE new_restrictions (
    id SERIAL PRIMARY KEY,
    path BIGINT[],
    cost float
);

INSERT INTO new_restrictions (path, cost) VALUES
(ARRAY[4, 7], 100),
(ARRAY[8, 11], 100),
(ARRAY[4, 8], 100),
(ARRAY[5, 9], 100),
(ARRAY[10, 12], 100),
(ARRAY[9, 15], 100),
(ARRAY[3, 5, 8], 100);

Imágenes

  • Las flechas rojas corresponden cuando cost > 0 en la tabla de aristas.
  • Las flechas azules corresponden cuando reverse_cost > 0 en la tabla de aristas.
  • Los puntos están fuera del grafo.
  • Haga clic en el grafo para ampliarlo.

Se utilizan redes para consultas marcadas como directed , cost y reverse_cost

Cuando se trabaja con redes de ciudades, esto se recomienda para el punto de vista de los vehículos.

_images/Fig1-originalData.png

Grafo 1: Dirigido, con costo y costo inverso

Se utiliza la red para consultas marcadas como undirected , cost y reverse_cost

Cuando se trabaja con redes de ciudades, esto se recomienda para el punto de vista de los peatones.

_images/Fig6-undirected.png

Grafo 2: No dirigido, con costo y costo inverso

Red para consultas marcadas como directed y sólo se utiliza la columna cost

_images/Fig2-cost.png

Grafo 3: Dirigido, con costo

Red para consultas marcadas como undirected y solo se utiliza la columna cost

_images/Fig4-costUndirected.png

Grafo 4: No dirigido, con costo

Datos de Recogida y Entrega


DROP TABLE IF EXISTS customer CASCADE;
CREATE table customer (
    id BIGINT not null primary key,
    x DOUBLE PRECISION,
    y DOUBLE PRECISION,
    demand INTEGER,
    opentime INTEGER,
    closetime INTEGER,
    servicetime INTEGER,
    pindex BIGINT,
    dindex BIGINT
);


INSERT INTO customer(
  id,     x,    y, demand, opentime, closetime, servicetime, pindex, dindex) VALUES
(  0,    40,   50,     0,     0,  1236,    0,    0,    0),
(  1,    45,   68,   -10,   912,   967,   90,   11,    0),
(  2,    45,   70,   -20,   825,   870,   90,    6,    0),
(  3,    42,   66,    10,    65,   146,   90,    0,   75),
(  4,    42,   68,   -10,   727,   782,   90,    9,    0),
(  5,    42,   65,    10,    15,    67,   90,    0,    7),
(  6,    40,   69,    20,   621,   702,   90,    0,    2),
(  7,    40,   66,   -10,   170,   225,   90,    5,    0),
(  8,    38,   68,    20,   255,   324,   90,    0,   10),
(  9,    38,   70,    10,   534,   605,   90,    0,    4),
( 10,    35,   66,   -20,   357,   410,   90,    8,    0),
( 11,    35,   69,    10,   448,   505,   90,    0,    1),
( 12,    25,   85,   -20,   652,   721,   90,   18,    0),
( 13,    22,   75,    30,    30,    92,   90,    0,   17),
( 14,    22,   85,   -40,   567,   620,   90,   16,    0),
( 15,    20,   80,   -10,   384,   429,   90,   19,    0),
( 16,    20,   85,    40,   475,   528,   90,    0,   14),
( 17,    18,   75,   -30,    99,   148,   90,   13,    0),
( 18,    15,   75,    20,   179,   254,   90,    0,   12),
( 19,    15,   80,    10,   278,   345,   90,    0,   15),
( 20,    30,   50,    10,    10,    73,   90,    0,   24),
( 21,    30,   52,   -10,   914,   965,   90,   30,    0),
( 22,    28,   52,   -20,   812,   883,   90,   28,    0),
( 23,    28,   55,    10,   732,   777,    0,    0,  103),
( 24,    25,   50,   -10,    65,   144,   90,   20,    0),
( 25,    25,   52,    40,   169,   224,   90,    0,   27),
( 26,    25,   55,   -10,   622,   701,   90,   29,    0),
( 27,    23,   52,   -40,   261,   316,   90,   25,    0),
( 28,    23,   55,    20,   546,   593,   90,    0,   22),
( 29,    20,   50,    10,   358,   405,   90,    0,   26),
( 30,    20,   55,    10,   449,   504,   90,    0,   21),
( 31,    10,   35,   -30,   200,   237,   90,   32,    0),
( 32,    10,   40,    30,    31,   100,   90,    0,   31),
( 33,     8,   40,    40,    87,   158,   90,    0,   37),
( 34,     8,   45,   -30,   751,   816,   90,   38,    0),
( 35,     5,   35,    10,   283,   344,   90,    0,   39),
( 36,     5,   45,    10,   665,   716,    0,    0,  105),
( 37,     2,   40,   -40,   383,   434,   90,   33,    0),
( 38,     0,   40,    30,   479,   522,   90,    0,   34),
( 39,     0,   45,   -10,   567,   624,   90,   35,    0),
( 40,    35,   30,   -20,   264,   321,   90,   42,    0),
( 41,    35,   32,   -10,   166,   235,   90,   43,    0),
( 42,    33,   32,    20,    68,   149,   90,    0,   40),
( 43,    33,   35,    10,    16,    80,   90,    0,   41),
( 44,    32,   30,    10,   359,   412,   90,    0,   46),
( 45,    30,   30,    10,   541,   600,   90,    0,   48),
( 46,    30,   32,   -10,   448,   509,   90,   44,    0),
( 47,    30,   35,   -10,  1054,  1127,   90,   49,    0),
( 48,    28,   30,   -10,   632,   693,   90,   45,    0),
( 49,    28,   35,    10,  1001,  1066,   90,    0,   47),
( 50,    26,   32,    10,   815,   880,   90,    0,   52),
( 51,    25,   30,    10,   725,   786,    0,    0,  101),
( 52,    25,   35,   -10,   912,   969,   90,   50,    0),
( 53,    44,    5,    20,   286,   347,   90,    0,   58),
( 54,    42,   10,    40,   186,   257,   90,    0,   60),
( 55,    42,   15,   -40,    95,   158,   90,   57,    0),
( 56,    40,    5,    30,   385,   436,   90,    0,   59),
( 57,    40,   15,    40,    35,    87,   90,    0,   55),
( 58,    38,    5,   -20,   471,   534,   90,   53,    0),
( 59,    38,   15,   -30,   651,   740,   90,   56,    0),
( 60,    35,    5,   -40,   562,   629,   90,   54,    0),
( 61,    50,   30,   -10,   531,   610,   90,   67,    0),
( 62,    50,   35,    20,   262,   317,   90,    0,   68),
( 63,    50,   40,    50,   171,   218,   90,    0,   74),
( 64,    48,   30,    10,   632,   693,    0,    0,  102),
( 65,    48,   40,    10,    76,   129,   90,    0,   72),
( 66,    47,   35,    10,   826,   875,   90,    0,   69),
( 67,    47,   40,    10,    12,    77,   90,    0,   61),
( 68,    45,   30,   -20,   734,   777,   90,   62,    0),
( 69,    45,   35,   -10,   916,   969,   90,   66,    0),
( 70,    95,   30,   -30,   387,   456,   90,   81,    0),
( 71,    95,   35,    20,   293,   360,   90,    0,   77),
( 72,    53,   30,   -10,   450,   505,   90,   65,    0),
( 73,    92,   30,   -10,   478,   551,   90,   76,    0),
( 74,    53,   35,   -50,   353,   412,   90,   63,    0),
( 75,    45,   65,   -10,   997,  1068,   90,    3,    0),
( 76,    90,   35,    10,   203,   260,   90,    0,   73),
( 77,    88,   30,   -20,   574,   643,   90,   71,    0),
( 78,    88,   35,    20,   109,   170,    0,    0,  104),
( 79,    87,   30,    10,   668,   731,   90,    0,   80),
( 80,    85,   25,   -10,   769,   820,   90,   79,    0),
( 81,    85,   35,    30,    47,   124,   90,    0,   70),
( 82,    75,   55,    20,   369,   420,   90,    0,   85),
( 83,    72,   55,   -20,   265,   338,   90,   87,    0),
( 84,    70,   58,    20,   458,   523,   90,    0,   89),
( 85,    68,   60,   -20,   555,   612,   90,   82,    0),
( 86,    66,   55,    10,   173,   238,   90,    0,   91),
( 87,    65,   55,    20,    85,   144,   90,    0,   83),
( 88,    65,   60,   -10,   645,   708,   90,   90,    0),
( 89,    63,   58,   -20,   737,   802,   90,   84,    0),
( 90,    60,   55,    10,    20,    84,   90,    0,   88),
( 91,    60,   60,   -10,   836,   889,   90,   86,    0),
( 92,    67,   85,    20,   368,   441,   90,    0,   93),
( 93,    65,   85,   -20,   475,   518,   90,   92,    0),
( 94,    65,   82,   -10,   285,   336,   90,   96,    0),
( 95,    62,   80,   -20,   196,   239,   90,   98,    0),
( 96,    60,   80,    10,    95,   156,   90,    0,   94),
( 97,    60,   85,    30,   561,   622,    0,    0,  106),
( 98,    58,   75,    20,    30,    84,   90,    0,   95),
( 99,    55,   80,   -20,   743,   820,   90,  100,    0),
( 100,   55,   85,    20,   647,   726,   90,    0,   99),
( 101,   25,   30,   -10,   725,   786,   90,   51,    0),
( 102,   48,   30,   -10,   632,   693,   90,   64,    0),
( 103,   28,   55,   -10,   732,   777,   90,   23,    0),
( 104,   88,   35,   -20,   109,   170,   90,   78,    0),
( 105,    5,   45,   -10,   665,   716,   90,   36,    0),
( 106,   60,   85,   -30,   561,   622,   90,   97,    0);