[QGIS-Developer] WKT from QgsGeometry incompatible with OGR

[Even Rouault]

I've went ahead and added support for PointZ like WKT strings in OGR in 
https://github.com/OSGeo/gdal/pull/10370, but it would be probably 
better that QGIS writes conformant WKT by default (I suspect that fixing 
this has the potential of breaking a number of tests though)

Le 06/07/2024 à 08:56, Even Rouault via QGIS-Developer a écrit :
> 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.
>
> Even
>
>>
>> Nyall
>>
>>
>>     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)
>>
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