postgis/doc/bnf-wkt.txt
Paul Ramsey 6e99b107ac Document ISO WKT/WKB (#1451)
git-svn-id: http://svn.osgeo.org/postgis/trunk@10313 b70326c6-7e19-0410-871a-916f4a2858ee
2012-09-20 22:24:16 +00:00

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<well-known text representation> ::=
<point text representation> |
<curve text representation> |
<surface text representation> |
<collection text representation>
<point text representation> ::= POINT [ <z m> ] <point text>
<curve text representation> ::=
<linestring text representation> |
<circularstring text representation> |
<compoundcurve text representation>
<linestring text representation> ::=
LINESTRING [ <z m> ] <linestring text body>
<circularstring text representation> ::=
CIRCULARSTRING [ <z m> ] <circularstring text>
<compoundcurve text representation> ::=
COMPOUNDCURVE [ <z m> ] <compoundcurve text>
<surface text representation> ::=
<curvepolygon text representation>
<curvepolygon text representation> ::=
CURVEPOLYGON [ <z m> ] <curvepolygon text body> |
<polygon text representation> |
<triangle text representation>
<polygon text representation> ::=
POLYGON [ <z m> ] <polygon text body>
<triangle text representation> ::=
TRIANGLE [ <z m> ] <triangle text body>
<collection text representation> ::=
<multipoint text representation> |
<multicurve text representation> |
<multisurface text representation> |
<geometrycollection text representation>
<multipoint text representation> ::=
MULTIPOINT [ <z m> ] <multipoint text>
<multicurve text representation> ::=
MULTICURVE [ <z m> ] <multicurve text> |
<multilinestring text representation>
<multilinestring text representation> ::=
MULTILINESTRING [ <z m> ] <multilinestring text>
<multisurface text representation> ::=
MULTISURFACE [ <z m> ] <multisurface text> |
<multipolygon text representation> |
<polyhedralsurface text representation> |
<tin text representation>
<multipolygon text representation> ::=
MULTIPOLYGON [ <z m> ] <multipolygon text>
<polyhedralsurface text representation> ::=
POLYHEDRALSURFACE [ <z m> ] <polyhedralsurface text>
<tin text representation> ::=
TIN [ <z m> ] <tin text>
<geometrycollection text representation> ::=
GEOMETRYCOLLECTION [ <z m> ] <geometrycollection text>
<linestring text body> ::=
<linestring text>
<curvepolygon text body> ::=
<curvepolygon text>
<polygon text body> ::=
<polygon text>
<triangle text body> ::=
<triangle text>
<point text> ::=
<empty set> |
<left paren> <point> <right paren>
<point> ::= <x> <y> [ <z> ] [ <m> ]
<x> ::= <number>
<y> ::= <number>
<z> ::= <number>
<m> ::= <number>
<linestring text> ::=
<empty set> |
<left paren> <point> { <comma> <point> }... <right paren>
<circularstring text> ::=
<empty set> |
<left paren> <point> { <comma> <point> }... <right paren>
<compoundcurve text> ::=
<empty set> |
<left paren> <single curve text> { <comma> <single curve text> }... <right paren>
<single curve text> ::=
<linestring text body> |
<circularstring text representation>
<curve text> ::=
<linestring text body> |
<circularstring text representation> |
<compoundcurve text representation>
<ring text> ::=
<linestring text body> |
<circularstring text representation> |
<compoundcurve text representation>
<surface text> ::=
CURVEPOLYGON <curvepolygon text body> |
<polygon text body>
<curvepolygon text> ::=
<empty set> |
<left paren> <ring text> { <comma> <ring text> }... <right paren>
<polygon text> ::=
<empty set> |
<left paren> <linestring text> { <comma> <linestring text> }... <right paren>
<triangle text> ::=
<empty set> |
<left paren> <linestring text> <right paren>
<multipoint text> ::=
<empty set> |
<left paren> <point text> { <comma> <point text > }... <right paren>
<multicurve text> ::=
<empty set> |
<left paren> <curve text> { <comma> <curve text> }... <right paren>
<multilinestring text> ::=
<empty set> |
<left paren> <linestring text body> { <comma> <linestring text body> }... <right paren>
<multisurface text> ::=
<empty set> |
<left paren> <surface text> { <comma> <surface text> }... <right paren>
<multipolygon text> ::=
<empty set> |
<left paren> <polygon text body> { <comma> <polygon text body> }... <right paren>
<polyhedralsurface text> ::=
<empty set> |
<left paren> <polygon text body> { <comma> <polygon text body> }... <right paren>
<tin text> ::=
<empty set> |
<left paren> <triangle text body> { <comma> <triangle text body> }... <right paren>
<geometrycollection text> ::=
<empty set> |
<left paren> <well-known text representation> { <comma> <well-known text representation> }... <right paren>
<empty set> ::= EMPTY
<z m> ::= ZM | Z | M
<left paren> ::= (
<right paren> ::= )