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?


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)');


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.

  • Not as easy as an online copy'n'paste tool but if one already has a PostGIS installation, then it works :) – nachtigall Mar 19 '14 at 10:45

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