Package ca.spatial.table

Class Topology

java.lang.Object
ca.spatial.table.Topology
public class Topology extends Object
This class ecapsulates topological relationships between blocks. Each block has an associated Node object. Nodes contain a list of Edge objects that make connections to other Nodes.

Use this Topology class to find Nodes and through the Nodes find the Edges.

See Also:
Node, Edge

  • Constructor Details

    • Topology

      public Topology​(ArrayList<Node> nodeList, Node space)
      Create a new topology structure from a populated node list. Assumne 1:1 mapping between nodes and rows.

  • Method Details

    • copy

      public Topology copy​(double distance)
      Copy the topology structure
      Parameters:
      distance - set the maximum distance between polygons. Connections that have greater distances will be filtered out.

    • compare

      public boolean compare​(Topology other)

    • getSpaceNode

      public Node getSpaceNode()
      Get the special Node that marks a block with a missing Node.

    • getSize

      public int getSize()
      Get the number of Nodes in the table

    • getNodes

      public Node[] getNodes()
      Get the entire array of Nodes

    • getNode

      public Node getNode​(int index)
      Get the Node corresponding to the block index.

    • getNodeByLabel

      public Node getNodeByLabel​(Object label)
      Get the Node corresponding to the block label

    • getRowForNode

      public int getRowForNode​(int index)

    • getMaxDistance

      public double getMaxDistance()
      Get the maximum inter-neighbour distance used in this network.

    • getFilename

      public String getFilename()
      Get the filename that was used to create this topology object.

    • getStore

      public AttributeStore getStore()
      Get the AttributeStore object that this topology file matches up to.

    • setStore

      public void setStore​(AttributeStore store)
      Get the AttributeStore object that this topology file matches up to.

    • getLabel

      public String getLabel()
      Get the column name from the attribuet store that contains the unique row label.

    • selectNeighbours

      public BitSet selectNeighbours​(BitSet in, double distance)
      Return a BitSet that contains all neightbours of the selections in the input set.
      Parameters:
      in - a BitSet that has the index values of the nodes of interest set
      distance - the maximum separation distance to select
      Returns:
      a BitSet with values set for all of the neighbour nodes to the input selection.

    • symmetry

      public boolean symmetry()
      Due to the way the data is loaded this test will always succeed.

    • inputTopology

      public static Topology inputTopology​(File file, double distance, Task task, Map<String,​int[]> sizeLu, AttributeStore store, String label)

    • toString

      public String toString()
      Overrides:
      toString in class Object