| Converts a geometry in Well-Known Text format to a
Geometry .
WKTReader supports
extracting Geometry objects from either
Reader s or
String s. This allows it to function as a parser to read Geometry
objects from text blocks embedded in other data formats (e.g. XML).
A WKTReader is parameterized by a GeometryFactory,
to allow it to create Geometry objects of the appropriate
implementation. In particular, the GeometryFactory
determines the PrecisionModel and SRID that is
used.
The WKTReader converts all input numbers to the precise
internal representation.
Notes:
- The reader supports non-standard "LINEARRING" tags.
- The reader uses Double.parseDouble to perform the conversion of ASCII
numbers to floating point. This means it supports the Java
syntax for floating point literals (including scientific notation).
Syntax
The following syntax specification describes the version of Well-Known Text
supported by JTS.
(The specification uses a syntax language similar to that used in
the C and Java language specifications.)
WKTGeometry: one of
WKTPoint WKTLineString WKTLinearRing WKTPolygon
WKTMultiPoint WKTMultiLineString WKTMultiPolygon
WKTGeometryCollection
WKTPoint: POINT ( Coordinate )
WKTLineString: LINESTRING CoordinateSequence
WKTLinearRing: LINEARRING CoordinateSequence
WKTPolygon: POLYGON CoordinateSequenceList
WKTMultiPoint: MULTIPOINT CoordinateSequence
WKTMultiLineString: MULTILINESTRING CoordinateSequenceList
WKTMultiPolygon:
MULTIPOLYGON ( CoordinateSequenceList { , CoordinateSequenceList } )
WKTGeometryCollection:
GEOMETRYCOLLECTION ( WKTGeometry { , WKTGeometry } )
CoordinateSequenceList:
( CoordinateSequence { , CoordinateSequence } )
CoordinateSequence:
( Coordinate { , Coordinate } )
Coordinate:
Number Number Numberopt
Number: A Java-style floating-point number
version:
1.7
See Also: WKTWriter | 