Class QuadPrefixTree

A SpatialPrefixTree which uses a quad tree in which an indexed term will be generated for each cell, 'A', 'B', 'C', 'D'.

This is a Lucene.NET EXPERIMENTAL API, use at your own risk
Inheritance
System.Object
SpatialPrefixTree
QuadPrefixTree
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
Namespace: Lucene.Net.Spatial.Prefix.Tree
Assembly: Lucene.Net.Spatial.dll
Syntax
public class QuadPrefixTree : SpatialPrefixTree

Constructors

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QuadPrefixTree(SpatialContext)

Declaration
public QuadPrefixTree(SpatialContext ctx)
Parameters
Type Name Description
Spatial4n.Core.Context.SpatialContext ctx
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QuadPrefixTree(SpatialContext, IRectangle, Int32)

Declaration
public QuadPrefixTree(SpatialContext ctx, IRectangle bounds, int maxLevels)
Parameters
Type Name Description
Spatial4n.Core.Context.SpatialContext ctx
Spatial4n.Core.Shapes.IRectangle bounds
System.Int32 maxLevels
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QuadPrefixTree(SpatialContext, Int32)

Declaration
public QuadPrefixTree(SpatialContext ctx, int maxLevels)
Parameters
Type Name Description
Spatial4n.Core.Context.SpatialContext ctx
System.Int32 maxLevels

Fields

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DEFAULT_MAX_LEVELS

Declaration
public const int DEFAULT_MAX_LEVELS = 12
Field Value
Type Description
System.Int32
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MAX_LEVELS_POSSIBLE

Declaration
public const int MAX_LEVELS_POSSIBLE = 50
Field Value
Type Description
System.Int32

Properties

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GridH

Declaration
public double GridH { get; }
Property Value
Type Description
System.Double

Methods

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GetCell(IPoint, Int32)

Declaration
protected override Cell GetCell(IPoint p, int level)
Parameters
Type Name Description
Spatial4n.Core.Shapes.IPoint p
System.Int32 level
Returns
Type Description
Cell
Overrides
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GetCell(Byte[], Int32, Int32)

Declaration
public override Cell GetCell(byte[] bytes, int offset, int len)
Parameters
Type Name Description
System.Byte[] bytes
System.Int32 offset
System.Int32 len
Returns
Type Description
Cell
Overrides
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GetCell(String)

Declaration
public override Cell GetCell(string token)
Parameters
Type Name Description
System.String token
Returns
Type Description
Cell
Overrides
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GetLevelForDistance(Double)

Declaration
public override int GetLevelForDistance(double dist)
Parameters
Type Name Description
System.Double dist
Returns
Type Description
System.Int32
Overrides
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PrintInfo(TextWriter)

Declaration
public virtual void PrintInfo(TextWriter out)
Parameters
Type Name Description
System.IO.TextWriter out