Class QuadPrefixTree

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

Note

This API is experimental and might change in incompatible ways in the next release.

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