[Qgis-user] QGIS WFS 3D vector layer treated as 2D
Mike Bundock
mike at augview.net
Sun Aug 3 23:42:55 PDT 2025
Hi
It appears that:
QGIS 3.34.14-Prizen version was working correctly with WFS 3D geometries
(at least the LinestringZ and MultiLinestringZ that i tested)
QGIS 3.40.4 does not recognise the z values of MultiLinestringZ. It may
be finding the first record and seeing Z values are 0, then dropping the Z
altogether.
QGIS 3.99.0 Master (nightly build) now correctly sees the geometry types *ONLY
IF* the first record has a geometry.
I suspect that if the table is empty or the first feature does not have a
geometry, the geometry type will be skipped - oops!
I needed to use the new option 'Force Initial GetFeature'
[image: image.png]
[image: image.png]
regards
*Mike Bundock* | CEO
Augview | P O Box 125046, St Heliers, Auckland 1740, New Zealand
p: +64 9 575 5298 | m: +64 27 575 5298 | e: mailto:mike.bundock at augview.net
<mike.bundock at augview.net>| w: www.augview.net
Winner of Innovation & Commercialisation and Supreme Awards at 2014 NZ
Spatial Excellence Awards
Winner of Innovation & Commercialisation Award at 2014 Asia Pacific Spatial
Excellence Awards
On Fri, 1 Aug 2025 at 21:30, Alessandro Pasotti <apasotti at gmail.com> wrote:
> Hi,
>
> I have fixed this recently: https://github.com/qgis/QGIS/pull/62449
>
> Can you try with a nightly build of QGIS and file a bug report if the
> issue persists?
>
>
>
> On Thu, Jul 31, 2025 at 10:34 AM Mike Bundock via QGIS-User <
> qgis-user at lists.osgeo.org> wrote:
>
>> Hi
>> a 3D vector WFS layer with geometry type MultiLineStringZ, published by
>> GeoServer is seen as 2D in QGIS but is published correctly as 3D.
>>
>> QGIS Version 3.40.4-Bratislava
>> QGIS reports the geometry type for geometry field geom3d as Geometry
>> Line (MultiLineString)
>> Identify Results shows no Z values for the geometry:
>> [image: image.png]
>>
>> *The source data* is in PostGIS and is 3D - an example is:
>> [image: image.png]
>> *WFS queries to the data source show the geometry is 3D* in the
>> geoserver WFS response:
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> *<?xml version="1.0" encoding="UTF-8"?><wfs:FeatureCollection
>> xmlns:xs="http://www.w3.org/2001/XMLSchema
>> <http://www.w3.org/2001/XMLSchema>"
>> xmlns:wfs="http://www.opengis.net/wfs/2.0 <http://www.opengis.net/wfs/2.0>"
>> xmlns:testns="https://augview.net/testns <https://augview.net/testns>"
>> xmlns:gml="http://www.opengis.net/gml/3.2 <http://www.opengis.net/gml/3.2>"
>> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance
>> <http://www.w3.org/2001/XMLSchema-instance>" numberMatched="1"
>> numberReturned="1" timeStamp="2025-07-31T08:25:23.092Z"
>> xsi:schemaLocation="http://www.opengis.net/wfs/2.0
>> <http://www.opengis.net/wfs/2.0>
>> https://registration.augview.net/geoserver/schemas/wfs/2.0/wfs.xsd
>> <https://registration.augview.net/geoserver/schemas/wfs/2.0/wfs.xsd>
>> https://augview.net/testns <https://augview.net/testns>
>> https://registration.augview.net/geoserver/testns/wfs?service=WFS&version=2.0.0&request=DescribeFeatureType&typeName=testns%3AWater_Pipe_Local
>> <https://registration.augview.net/geoserver/testns/wfs?service=WFS&version=2.0.0&request=DescribeFeatureType&typeName=testns%3AWater_Pipe_Local>
>> http://www.opengis.net/gml/3.2 <http://www.opengis.net/gml/3.2>
>> https://registration.augview.net/geoserver/schemas/gml/3.2.1/gml.xsd
>> <https://registration.augview.net/geoserver/schemas/gml/3.2.1/gml.xsd>">
>> <wfs:member> <testns:Water_Pipe_Local
>> gml:id="Water_Pipe_Local.726022"> <testns:id>726022</testns:id>
>> <testns:subtype>1</testns:subtype> <testns:geom3d>
>> <gml:MultiCurve srsName="urn:ogc:def:crs:EPSG::2193"
>> srsDimension="3" gml:id="Water_Pipe_Local.726022.geom3d">
>> <gml:curveMember> <gml:LineString
>> gml:id="Water_Pipe_Local.726022.geom3d.1">
>> <gml:posList>5936450.85824186 1754007.66665035 100.6 5936452.36323351
>> 1754005.52882205 101.4 5936455.4422984 1754005.56829724
>> 101.7</gml:posList> </gml:LineString>
>> </gml:curveMember> </gml:MultiCurve>
>> </testns:geom3d> </testns:Water_Pipe_Local>
>> </wfs:member></wfs:FeatureCollection>*
>>
>> Is there something I am not doing correctly when connecting to the data
>> via WFS?
>>
>> regards
>>
>> Mike
>>
>> *Mike Bundock* | CEO
>>
>> Augview | P O Box 125046, St Heliers, Auckland 1740, New Zealand
>>
>> p: +64 9 575 5298 | m: +64 27 575 5298 | e:
>> mailto:mike.bundock at augview.net <mike.bundock at augview.net>| w:
>> www.augview.net
>>
>>
>>
>> Winner of Innovation & Commercialisation and Supreme Awards at 2014 NZ
>> Spatial Excellence Awards
>>
>> Winner of Innovation & Commercialisation Award at 2014 Asia Pacific
>> Spatial Excellence Awards
>> _______________________________________________
>> QGIS-User mailing list
>> QGIS-User at lists.osgeo.org
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>>
>
>
> --
> Alessandro Pasotti
> QCooperative: www.qcooperative.net
> ItOpen: www.itopen.it
>
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