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Field Details

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  MAX_SOLUTION_RADIUS

  public static final String MAX_SOLUTION_RADIUS

  For ALLPATHS, SHORTEST_PATH and INVERSE_SHORTEST_PATH solvers only. Sets the maximum solution cost radius, which ignores the destinationNodes list and instead outputs the nodes within the radius sorted by ascending cost. If set to ‘0.0’, the setting is ignored. The default value is ‘0.0’.

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  • Constant Field Values

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  MIN_SOLUTION_RADIUS

  public static final String MIN_SOLUTION_RADIUS

  For ALLPATHS, SHORTEST_PATH and INVERSE_SHORTEST_PATH solvers only. Applicable only when MAX_SOLUTION_RADIUS is set. Sets the minimum solution cost radius, which ignores the destinationNodes list and instead outputs the nodes within the radius sorted by ascending cost. If set to ‘0.0’, the setting is ignored. The default value is ‘0.0’.

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  • Constant Field Values

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  MAX_SOLUTION_TARGETS

  public static final String MAX_SOLUTION_TARGETS

  For ALLPATHS, SHORTEST_PATH and INVERSE_SHORTEST_PATH solvers only. Sets the maximum number of solution targets, which ignores the destinationNodes list and instead outputs no more than n number of nodes sorted by ascending cost where n is equal to the setting value. If set to 0, the setting is ignored. The default value is ‘1000’.

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  • Constant Field Values

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  UNIFORM_WEIGHTS

  public static final String UNIFORM_WEIGHTS

  When specified, assigns the given value to all the edges in the graph. Note that weights provided in weightsOnEdges will override this value.

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  • Constant Field Values

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  LEFT_TURN_PENALTY

  public static final String LEFT_TURN_PENALTY

  This will add an additional weight over the edges labeled as ‘left turn’ if the ‘add_turn’ option parameter of the GPUdb.createGraph was invoked at graph creation. The default value is ‘0.0’.

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  • Constant Field Values

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  RIGHT_TURN_PENALTY

  public static final String RIGHT_TURN_PENALTY

  This will add an additional weight over the edges labeled as’ right turn’ if the ‘add_turn’ option parameter of the GPUdb.createGraph was invoked at graph creation. The default value is ‘0.0’.

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  • Constant Field Values

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  INTERSECTION_PENALTY

  public static final String INTERSECTION_PENALTY

  This will add an additional weight over the edges labeled as ‘intersection’ if the ‘add_turn’ option parameter of the GPUdb.createGraph was invoked at graph creation. The default value is ‘0.0’.

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  • Constant Field Values

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  SHARP_TURN_PENALTY

  public static final String SHARP_TURN_PENALTY

  This will add an additional weight over the edges labeled as ‘sharp turn’ or ‘u-turn’ if the ‘add_turn’ option parameter of the GPUdb.createGraph was invoked at graph creation. The default value is ‘0.0’.

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  • Constant Field Values

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  NUM_BEST_PATHS

  public static final String NUM_BEST_PATHS

  For MULTIPLE_ROUTING solvers only; sets the number of shortest paths computed from each node. This is the heuristic criterion. Default value of zero allows the number to be computed automatically by the solver. The user may want to override this parameter to speed-up the solver. The default value is ‘0’.

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  • Constant Field Values

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  MAX_NUM_COMBINATIONS

  public static final String MAX_NUM_COMBINATIONS

  For MULTIPLE_ROUTING solvers only; sets the cap on the combinatorial sequences generated. If the default value of two millions is overridden to a lesser value, it can potentially speed up the solver. The default value is ‘2000000’.

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  • Constant Field Values

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  OUTPUT_EDGE_PATH

  public static final String OUTPUT_EDGE_PATH

  If true then concatenated edge IDs will be added as the EDGE path column of the solution table for each source and target pair in shortest path solves. Supported values:

  • TRUE
  • FALSE

  The default value is FALSE.

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  • Constant Field Values

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  TRUE

  public static final String TRUE

  An additional column ‘CLUSTER’ will be added for each node.

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  • Constant Field Values

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  FALSE

  public static final String FALSE

  No extra cluster info per node will be available in the output.

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  • Constant Field Values

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  OUTPUT_WKT_PATH

  public static final String OUTPUT_WKT_PATH

  If true then concatenated wkt line segments will be added as the Wktroute column of the solution table for each source and target pair in shortest path solves. Supported values:

  • TRUE
  • FALSE

  The default value is TRUE.

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  • Constant Field Values

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  SERVER_ID

  public static final String SERVER_ID

  Indicates which graph server(s) to send the request to. Default is to send to the server, amongst those containing the corresponding graph, that has the most computational bandwidth. For SHORTEST_PATH solver type, the input is split amongst the server containing the corresponding graph.

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  • Constant Field Values

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  CONVERGENCE_LIMIT

  public static final String CONVERGENCE_LIMIT

  For PAGE_RANK solvers only; Maximum percent relative threshold on the page rank scores of each node between consecutive iterations to satisfy convergence. Default value is 1 (one) percent. The default value is ‘1.0’.

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  • Constant Field Values

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  MAX_ITERATIONS

  public static final String MAX_ITERATIONS

  For PAGE_RANK solvers only; Maximum number of page rank iterations for satisfying convergence. Default value is 100. The default value is ‘100’.

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  MAX_RUNS

  public static final String MAX_RUNS

  For all CENTRALITY solvers only; Sets the maximum number of shortest path runs; maximum possible value is the number of nodes in the graph. Default value of 0 enables this value to be auto computed by the solver. The default value is ‘0’.

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  • Constant Field Values

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  OUTPUT_CLUSTERS

  public static final String OUTPUT_CLUSTERS

  For STATS_ALL solvers only; the cluster index for each node will be inserted as an additional column in the output. Supported values:

  • TRUE: An additional column ‘CLUSTER’ will be added for each node.
  • FALSE: No extra cluster info per node will be available in the output.

  The default value is FALSE.

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  • Constant Field Values

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  SOLVE_HEURISTIC

  public static final String SOLVE_HEURISTIC

  Specify heuristic search criterion only for the geo graphs and shortest path solves towards a single target. Supported values:

  • ASTAR: Employs A-STAR heuristics to speed up the shortest path traversal.
  • NONE: No heuristics are applied.

  The default value is NONE.

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  • Constant Field Values

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  ASTAR

  public static final String ASTAR

  Employs A-STAR heuristics to speed up the shortest path traversal.

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  • Constant Field Values

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  NONE

  public static final String NONE

  No heuristics are applied.

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  • Constant Field Values

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  ASTAR_RADIUS

  public static final String ASTAR_RADIUS

  For path solvers only when ‘solve_heuristic’ option is ‘astar’. The shortest path traversal front includes nodes only within this radius (kilometers) as it moves towards the target location. The default value is ‘70’.

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  • Constant Field Values