WKTWriter class

Writes the Well-Known Text representation of a {@link Geometry}. The Well-Known Text format is defined in the OGC Simple Features Specification for SQL. See {@link WKTReader} for a formal specification of the format syntax.

The WKTStringBuffer outputs coordinates rounded to the precision model. Only the maximum number of decimal places necessary to represent the ordinates to the required precision will be output.

The SFS WKT spec does not define a special tag for {@link LinearRing}s. Under the spec, rings are output as LINESTRINGs. In order to allow precisely specifying constructed geometries, JTS also supports a non-standard LINEARRING tag which is used to output LinearRings.

@version 1.7 @see WKTReader

Constructors

WKTWriter(): Creates a WKTStringBuffer with default settings
WKTWriter.withDimension(int outputDimension): Creates a writer that writes {@link Geometry}s with the given output dimension (2 to 4). The output follows the following rules:

Properties

coordsPerLine ↔ int: getter/setter pair
hashCode → int: The hash code for this object.
no setterinherited
indentTabStr ↔ String?: getter/setter pair
isFormatted ↔ bool: getter/setter pair
outputDimension ↔ int: getter/setter pair
outputOrdinates ↔ List<Ordinate>: getter/setter pair
precisionModel ↔ PrecisionModel?: getter/setter pair
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited

Methods

appendGeometryCollectionTaggedText(GeometryCollection geometryCollection, List<Ordinate> outputOrdinates, bool useFormatting, int level, StringBuffer writer, NumberFormat formatter) → void: Converts a GeometryCollection to <GeometryCollection Tagged Text> format, then appends it to the writer.
appendGeometryCollectionText(GeometryCollection geometryCollection, List<Ordinate> outputOrdinates, bool useFormatting, int level, StringBuffer writer, NumberFormat formatter) → void: Converts a GeometryCollection to <GeometryCollectionText> format, then appends it to the writer.
appendGeometryTaggedText(Geometry geometry, bool useFormatting, StringBuffer writer, NumberFormat formatter) → void: Converts a Geometry to <Geometry Tagged Text> format, then appends it to the writer.
appendGeometryTaggedText6Args(Geometry geometry, List<Ordinate> outputOrdinates, bool useFormatting, int level, StringBuffer writer, NumberFormat formatter) → void: Converts a Geometry to <Geometry Tagged Text> format, then appends it to the writer.
appendLinearRingTaggedText(LinearRing linearRing, List<Ordinate> outputOrdinates, bool useFormatting, int level, StringBuffer writer, NumberFormat formatter) → void: Converts a LinearRing to <LinearRing Tagged Text> format, then appends it to the writer.
appendLineStringTaggedText(LineString lineString, List<Ordinate> outputOrdinates, bool useFormatting, int level, StringBuffer writer, NumberFormat formatter) → void: Converts a LineString to <LineString Tagged Text> format, then appends it to the writer.
appendMultiLineStringTaggedText(MultiLineString multiLineString, List<Ordinate> outputOrdinates, bool useFormatting, int level, StringBuffer writer, NumberFormat formatter) → void: Converts a MultiLineString to <MultiLineString Tagged Text> format, then appends it to the writer.
appendMultiLineStringText(MultiLineString multiLineString, List<Ordinate> outputOrdinates, bool useFormatting, int level, StringBuffer writer, NumberFormat formatter) → void: Converts a MultiLineString to <MultiLineString Text> format, then appends it to the writer.
appendMultiPointTaggedText(MultiPoint multipoint, List<Ordinate> outputOrdinates, bool useFormatting, int level, StringBuffer writer, NumberFormat formatter) → void: Converts a MultiPoint to <MultiPoint Tagged Text> format, then appends it to the writer.
appendMultiPointText(MultiPoint multiPoint, List<Ordinate> outputOrdinates, bool useFormatting, int level, StringBuffer writer, NumberFormat formatter) → void: Converts a MultiPoint to <MultiPoint Text> format, then appends it to the writer.
appendMultiPolygonTaggedText(MultiPolygon multiPolygon, List<Ordinate> outputOrdinates, bool useFormatting, int level, StringBuffer writer, NumberFormat formatter) → void: Converts a MultiPolygon to <MultiPolygon Tagged Text> format, then appends it to the writer.
appendMultiPolygonText(MultiPolygon multiPolygon, List<Ordinate> outputOrdinates, bool useFormatting, int level, StringBuffer writer, NumberFormat formatter) → void: Converts a MultiPolygon to <MultiPolygon Text> format, then appends it to the writer.
appendOrdinateText(List<Ordinate> outputOrdinates, StringBuffer writer) → void: Appends additional ordinate information. This function may
appendPointTaggedText(Point point, List<Ordinate> outputOrdinates, bool useFormatting, int level, StringBuffer writer, NumberFormat formatter) → void: Converts a Coordinate to <Point Tagged Text> format, then appends it to the writer.
appendPolygonTaggedText(Polygon polygon, List<Ordinate> outputOrdinates, bool useFormatting, int level, StringBuffer writer, NumberFormat formatter) → void: Converts a Polygon to <Polygon Tagged Text> format, then appends it to the writer.
appendPolygonText(Polygon polygon, List<Ordinate> outputOrdinates, bool useFormatting, int level, bool indentFirst, StringBuffer writer, NumberFormat formatter) → void: Converts a Polygon to <Polygon Text> format, then appends it to the writer.
appendSequenceText(CoordinateSequence seq, List<Ordinate> outputOrdinates, bool useFormatting, int level, bool indentFirst, StringBuffer writer, NumberFormat formatter) → void: Appends all members of a CoordinateSequence to the stream. Each {@code Coordinate} is separated from another using a colon, the ordinates of a {@code Coordinate} are separated by a space.
getOutputOrdinates() → List<Ordinate>: Gets a bit-pattern defining which ordinates should be @return an ordinate bit-pattern @see #setOutputOrdinates(List)
indent(bool useFormatting, int level, StringBuffer writer) → void
indentCoords(bool useFormatting, int coordIndex, int level, StringBuffer writer) → void
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
setFormatted(bool isFormatted) → void: Sets whether the output will be formatted.
setMaxCoordinatesPerLine(int coordsPerLine) → void: Sets the maximum number of coordinates per line written in formatted output. If the provided coordinate number is <= 0, coordinates will be written all on one line.
setOutputOrdinates(List<Ordinate> outputOrdinates) → void: Sets the {@link Ordinate} that are to be written. Possible members are:
setPrecisionModel(PrecisionModel precisionModel) → void: Sets a {@link PrecisionModel} that should be used on the ordinates written.
setTab(int size) → void: Sets the tab size to use for indenting.
toString() → String: A string representation of this object.
inherited
write(Geometry geometry) → String: Converts a Geometry to its Well-known Text representation.
writeFormatted(Geometry geometry) → String: Same as write, but with newlines and spaces to make the well-known text more readable.
writeFormatted4Args(Geometry geometry, bool useFormatting, StringBuffer writer, PrecisionModel? precisionModel) → void: Converts a Geometry to its Well-known Text representation.
writeFormattedWithStringBuffer(Geometry geometry, StringBuffer writer) → void: Same as write, but with newlines and spaces to make the well-known text more readable.
writeWithStringBuffer(Geometry geometry, StringBuffer writer) → void: Converts a Geometry to its Well-known Text representation.

Operators

operator ==(Object other) → bool: The equality operator.
inherited

Static Properties

INDENT → int: final
OUTPUT_DIMENSION → int: final

Static Methods

appendCoordinate(CoordinateSequence seq, List<Ordinate> outputOrdinates, int i, StringBuffer writer, NumberFormat formatter) → void: Appends the i'th coordinate from the sequence to the writer
createFormatter(PrecisionModel precisionModel) → NumberFormat: Creates the NumberFormat used to write doubles with a sufficient number of decimal places.
stringOfChar(String ch, int count) → String: Returns a String of repeated characters.
toLineString(List<Coordinate> coord) → String: Generates the WKT for a LINESTRING specified by a {@link CoordinateSequence}.
toLineStringFromCoords(Coordinate p0, Coordinate p1) → String: Generates the WKT for a LINESTRING specified by two {@link Coordinate}s.
toLineStringFromSequence(CoordinateSequence seq) → String: Generates the WKT for a LINESTRING specified by a {@link CoordinateSequence}.
toPoint(Coordinate p0) → String: Generates the WKT for a POINT specified by a {@link Coordinate}.
writeNumber(double d, NumberFormat formatter) → String: Converts a double to a String, not in scientific notation.