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Is there anything like http://jsonlint.com or http://geojsonlint.com for WKT? How can I validate a complex WKT string, say e.g. a Multipolygon?

nachtigall
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  • possible duplicate of http://gis.stackexchange.com/questions/60534/are-there-any-online-wkt-editors See also: http://stackoverflow.com/questions/9985484/php-validate-wkt-values – Antonio Falciano Mar 18 '14 at 16:03

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One possible WKT validator can be PostGIS or a whatever spatial DBMS you like. For instance:

SELECT ST_GeomFromText('POINT(-71.064544 42.28787)');

is executed successfully, because POINT(-71.064544 42.28787) is a valid WKT representation. Instead:

SELECT ST_GeomFromText('POINT(-71.064544, 42.28787)');

returns:

ERROR: parse error - invalid geometry HINT: "POINT(-71.064544, " <-- parse error at position 18 within geometry *** Error ***

ERROR: parse error - invalid geometry SQL state: XX000 Hint: "POINT(-71.064544, " <-- parse error at position 18 within geometry

because POINT(-71.064544, 42.28787) is not a valid WKT. Hope this helps.

Antonio Falciano
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