Hi Nyall,I would say that the focus (on the examples in 6.1.2.6.4) is the LocateAlong and LocateBetween methods and the examples used are less carefully written. Next to each other, examples on 6.1.2.6.3 and 6.1.2.6.4 seem written by different contributors.
Page 52 says: "The Well-known Text Representation of Geometry is defined below using BNF". That's the WKT representation definition, even if we can find some examples failing this notation.
We could support both in QGIS. We can eventually read (parse) both notations to keep them consistent with previous WKT outputs, but we should write using the BNF notation.
Regards, Jorge On 06/07/24 10:02, Nyall Dawson via QGIS-Developer wrote:
On Sat, 6 July 2024, 4:56 pm Even Rouault, <even.roua...@spatialys.com> wrote:Hi,Both formats are compliant with the WKT specifications.Are they? I may have missed something in the Simple Features spec, but looking at https://portal.ogc.org/files/?artifact_id=25355 , I can't see where it would allow the form {geometryTypeName}Z without a space between {geometryTypeName} and Z. For example the BNF at page 56 shows: <point z tagged text> ::= point z <point z text> The examples at page 62 also show a space Hmmmm.... What about the examples in 6.1.2.6.4? Nyall . EvenNyall A minimal example is below. Executing it will return an exception: "RuntimeError: OGR Error: Corrupt data" from osgeo import ogr qgis_geometyry = QgsGeometry().fromWkt("POINT Z (0 0 0)") wkt = qgis_geometyry.asWkt() # 'PointZ (0 0 0)' ogr.CreateGeometryFromWkt(wkt) _______________________________________________ QGIS-Developer mailing list QGIS-Developer@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer _______________________________________________ QGIS-Developer mailing list QGIS-Developer@lists.osgeo.org List info:https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe:https://lists.osgeo.org/mailman/listinfo/qgis-developer-- http://www.spatialys.comMy software is free, but my time generally not. _______________________________________________ QGIS-Developer mailing list QGIS-Developer@lists.osgeo.org List info:https://lists.osgeo.org/mailman/listinfo/qgis-developer Unsubscribe:https://lists.osgeo.org/mailman/listinfo/qgis-developer
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