Class WKTWriter

Outputs the textual representation of a Geometry. The WKTWriter outputs coordinates rounded to the precision model. No more than the maximum number of necessary decimal places will be output. The Well-known Text format is defined in the OpenGIS Simple Features Specification for SQL. A non-standard "LINEARRING" tag is used for LinearRings. The WKT spec does not define a special tag for LinearRings. The standard tag to use is "LINESTRING".

Inheritance

object

WKTWriter

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: NetTopologySuite.IO

Assembly: NetTopologySuite.dll

Syntax

public class WKTWriter

Constructors

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WKTWriter()

Creates an instance of this class which is writing at most 2 dimensions.

Declaration

public WKTWriter()

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WKTWriter(int)

Creates an instance of this class which is writing at most outputDimension dimensions.

Declaration

public WKTWriter(int outputDimension)

Parameters

Type	Name	Description
int	outputDimension

Properties

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Formatted

Gets/sets whether the output will be formatted

Declaration

public bool Formatted { get; set; }

Property Value

Type	Description
bool

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MaxCoordinatesPerLine

Gets/sets the maximum number of coordinates per line written in formatted output.

Declaration

public int MaxCoordinatesPerLine { get; set; }

Property Value

Type	Description
int

Remarks

If the provided coordinate number is < 0, coordinates will be written all on one line.

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OutputOrdinates

Gets or sets the Ordinates to be written. Possible members are:

Values of X and Y are always assumed and not particularly checked for.

Declaration

public Ordinates OutputOrdinates { get; set; }

Property Value

Type	Description
Ordinates

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PrecisionModel

Gets or sets a PrecisionModel that should be used on the ordinates written.

If none/null is assigned, the precision model of the Factory is used.

Note: The precision model is applied to all ordinate values, not just x and y.

Declaration

public PrecisionModel PrecisionModel { get; set; }

Property Value

Type	Description
PrecisionModel

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Tab

Gets/sets the tab size to use for indenting.

Declaration

public int Tab { get; set; }

Property Value

Type	Description
int

Exceptions

Type	Condition
ArgumentException	If the size is non-positive

Methods

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ForMicrosoftSqlServer()

Creates a new instance of the WKTWriter class suitable for MSSQL's non- standard WKT format.

Declaration

public static WKTWriter ForMicrosoftSqlServer()

Returns

Type	Description
WKTWriter	A new instance of the WKTWriter class suitable for MSSQL's non-standard WKT format.

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ToLineString(Coordinate, Coordinate)

Generates the WKT for a LineString specified by two Coordinates.

Declaration

public static string ToLineString(Coordinate p0, Coordinate p1)

Parameters

Type	Name	Description
Coordinate	p0	The first coordinate.
Coordinate	p1	The second coordinate.

Returns

Type	Description
string	The WKT

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ToLineString(CoordinateSequence)

Generates the WKT for a N-point LineString specified by a CoordinateSequence.

Declaration

public static string ToLineString(CoordinateSequence seq)

Parameters

Type	Name	Description
CoordinateSequence	seq	The sequence to write.

Returns

Type	Description
string	The WKT

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ToLineString(Coordinate[])

Generates the WKT for a LINESTRING specified by an array of Coordinates.

Declaration

public static string ToLineString(Coordinate[] coord)

Parameters

Type	Name	Description
Coordinate[]	coord	An array of coordinates

Returns

Type	Description
string	The WKT

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ToPoint(Coordinate)

Generates the WKT for a Point specified by a Coordinate.

Declaration

public static string ToPoint(Coordinate p0)

Parameters

Type	Name	Description
Coordinate	p0	The point coordinate.

Returns

Type	Description
string	The WKT

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Write(Geometry)

Converts a Geometry to its Well-known Text representation.

Declaration

public virtual string Write(Geometry geometry)

Parameters

Type	Name	Description
Geometry	geometry	A `Geometry` to process.

Returns

Type	Description
string	A Geometry Tagged Text string (see the OpenGIS Simple Features Specification).

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Write(Geometry, Stream)

Converts a Geometry to its Well-known Text representation.

Declaration

public void Write(Geometry geometry, Stream stream)

Parameters

Type	Name	Description
Geometry	geometry	A `Geometry` to process.
Stream	stream	A `Stream` to write into

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Write(Geometry, TextWriter)

Converts a Geometry to its Well-known Text representation.

Declaration

public virtual void Write(Geometry geometry, TextWriter writer)

Parameters

Type	Name	Description
Geometry	geometry	A `Geometry` to process.
TextWriter	writer

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WriteFormatted(Geometry)

Same as write, but with newlines and spaces to make the well-known text more readable.

Declaration

public virtual string WriteFormatted(Geometry geometry)

Parameters

Type	Name	Description
Geometry	geometry	A `Geometry` to process

Returns

Type	Description
string	A "Geometry Tagged Text" string (see the OpenGIS Simple Features Specification), with newlines and spaces.

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WriteFormatted(Geometry, TextWriter)

Same as write, but with newlines and spaces to make the well-known text more readable.

Declaration

public virtual void WriteFormatted(Geometry geometry, TextWriter writer)

Parameters

Type	Name	Description
Geometry	geometry	A `Geometry` to process
TextWriter	writer