Class SpatialArgs

Principally holds the query Spatial4n.Core.Shapes.IShape and the SpatialOperation. It's used as an argument to some methods on SpatialStrategy.

This is a Lucene.NET EXPERIMENTAL API, use at your own risk

Inheritance

System.Object

SpatialArgs

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.Queries

Assembly: Lucene.Net.Spatial.dll

Syntax

public class SpatialArgs

Constructors

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SpatialArgs(SpatialOperation, IShape)

Declaration

public SpatialArgs(SpatialOperation operation, IShape shape)

Parameters

Type	Name	Description
SpatialOperation	operation
Spatial4n.Core.Shapes.IShape	shape

Fields

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DEFAULT_DISTERRPCT

Declaration

public static readonly double DEFAULT_DISTERRPCT

Field Value

Type	Description
System.Double

Properties

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DistErr

The acceptable error of the shape. This effectively inflates the size of the shape but should not shrink it.

Declaration

public virtual double? DistErr { get; set; }

Property Value

Type	Description
System.Nullable<System.Double>	= 0

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DistErrPct

A measure of acceptable error of the shape as a fraction. This effectively inflates the size of the shape but should not shrink it.

Declaration

public virtual double? DistErrPct { get; set; }

Property Value

Type	Description
System.Nullable<System.Double>	0 to 0.5

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Operation

Declaration

public virtual SpatialOperation Operation { get; set; }

Property Value

Type	Description
SpatialOperation

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Shape

Declaration

public virtual IShape Shape { get; set; }

Property Value

Type	Description
Spatial4n.Core.Shapes.IShape

Methods

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CalcDistanceFromErrPct(IShape, Double, SpatialContext)

Computes the distance given a shape and the distErrPct. The algorithm is the fraction of the distance from the center of the query shape to its furthest bounding box corner.

Declaration

public static double CalcDistanceFromErrPct(IShape shape, double distErrPct, SpatialContext ctx)

Parameters

Type	Name	Description
Spatial4n.Core.Shapes.IShape	shape	Mandatory.
System.Double	distErrPct	0 to 0.5
Spatial4n.Core.Context.SpatialContext	ctx	Mandatory

Returns

Type	Description
System.Double	A distance (in degrees).

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ResolveDistErr(SpatialContext, Double)

Gets the error distance that specifies how precise the query shape is. This looks at DistErr, DistErrPct, and defaultDistErrPct.

Declaration

public virtual double ResolveDistErr(SpatialContext ctx, double defaultDistErrPct)

Parameters

Type	Name	Description
Spatial4n.Core.Context.SpatialContext	ctx
System.Double	defaultDistErrPct	0 to 0.5

Returns

Type	Description
System.Double	= 0

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ToString()

Declaration

public override string ToString()

Returns

Type	Description
System.String

Overrides

System.Object.ToString()

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Validate()

Check if the arguments make sense -- throw an exception if not

Declaration

public virtual void Validate()