# Package org.apache.sis.index.tree

- Interface Summary
  Interface | Description
  --- | ---
  QuadTreeData | Interface representing data stored in quad tree.

- Class Summary
  Class | Description
  --- | ---
  GeoRSSData | Implements QuadTreeData to store GeoRSS items into quad tree.
  QuadTree | Implementation of Quad Tree Index.
  QuadTreeReader | Class to reload the quad tree index from file.
  QuadTreeWriter | Class to save the quad tree index from file.

- Enum Summary
  Enum | Description
  --- | ---
  NodeType | Enum to represent node type of quad tree.

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